G. Allan Johnson | Scholars@Duke

G. Allan Johnson
Charles E. Putman University Distinguished Professor of Radiology

Dr. Johnson is the Charles E. Putman University Professor of Radiology, Professor of Physics, and Biomedical Engineering, and Director of the Duke Center for In Vivo Microscopy (CIVM). The CIVM is an NIH/NIBIB national Biomedical Technology Resource Center with a mission to develop novel technologies for preclinical imaging (basic sciences) and apply the technologies to critical biomedical questions. Dr. Johnson was one of the first researchers to bring Paul Lauterbur's vision of magnetic resonance (MR) microscopy to practice as described in his paper, "Nuclear magnetic resonance imaging at microscopic resolution" (J Magn Reson 68:129-137, 1986). Dr. Johnson is involved in both the engineering physics required to extend the resolution of MR imaging and in a broad range of applications in the basic sciences.

Office Hours

8:30 AM-5:00 PM and by appointment.

Current Appointments & Affiliations

Charles E. Putman University Distinguished Professor of Radiology, Radiology, Clinical Science Departments 2002
Professor of Radiology, Radiology, Clinical Science Departments 2018
Professor in the Department of Physics, Physics, Trinity College of Arts & Sciences 1993
Member of the Duke Cancer Institute, Duke Cancer Institute, Institutes and Centers 1974

Contact Information

141D Bryan Neuroscience Bldg, Research Drive, Durham, NC 27710
Box 3302 Med Ctr, Durham, NC 27710
gjohnson@duke.edu (919) 684-7754
Center for In Vivo Microscopy

Background
Education, Training, & Certifications
- Ph.D., Duke University 1974
Duke Appointment History
- Professor of Radiology, Radiology, Clinical Science Departments 1988 - 2018
- Professor of Biomedical Engineering, Biomedical Engineering, Pratt School of Engineering 2003 - 2016
- Head, Section of Imaging Physics, Radiology, Clinical Science Departments 1979 - 2011
- Professor of Biomedical Engineering, Biomedical Engineering, Pratt School of Engineering 1995 - 1999
Recognition
In the News
- SEP 16, 2015
  
  New Mouse Brain Connectome May Illuminate Origins of Mental Illnesses
Expertise
Subject Headings
Global Scholarship
- Expertise
  - United States of America (Country)
Research
Selected Grants
- The Duke Preclinical Research Resources for Quantitative Imaging Biomarkers awarded by National Institutes of Health 2017 - 2022
- Transmission electron microscope (TEM) awarded by National Institutes of Health 2019 - 2020
- Waxholm Space for Rodent Neuroinformatics awarded by University of Pennsylvania 2016 - 2020
- Training in Medical Imaging awarded by National Institutes of Health 2003 - 2020
- Neuronal Networks in Traumatic Brain Injury of ApoE Mice 2019
- Quantitative MR Microscopy of Phenotypic Biomarkers in Alzheimer's Disease awarded by National Institutes of Health 2013 - 2018
- Integrated Center For In Vivo Microscopy awarded by National Institutes of Health 2003 - 2018
- Serial Block Face Scanning Electron Microscope awarded by National Institutes of Health 2016 - 2018
- Ultra-resolution imaging of brain circuitry and its development in mental health awarded by National Institutes of Health 2013 - 2016
- MRI Corticography (MRCoG): Micro-scale Human Cortical Imaging awarded by University of California, Berkeley 2014 - 2016
- Prevention of Temporal Lobe Epilepsy awarded by National Institutes of Health 2012 - 2015
- Whole brain multimodal microscopy of an apoptosis reporter mouse awarded by National Institutes of Health 2012 - 2014
- Time-Resolved 129Xe Ventilation-Perfusion MRI in Rat Models of Acute Lung Injury awarded by National Institutes of Health 2012 - 2014
- Agilent Direct Drive 9.4T MRS/MRI Console awarded by National Institutes of Health 2012 - 2013
- Cross-disciplinary Training in Medical Physics awarded by National Institutes of Health 2007 - 2013
- Regulation of mitochondrial biogenesis by heme oxygenase-1 awarded by National Institutes of Health 2008 - 2013
- Small Animal Imaging Resource Program awarded by National Institutes of Health 2001 - 2012
- The Role of PTEN in Endothelial Biology awarded by National Institutes of Health 2008 - 2012
- The Duke University Molecular Imaging Center awarded by National Institutes of Health 2001 - 2006
- Functional Assessment of Pulmonary Toxicity with MRM awarded by National Institutes of Health 1996 - 2006
- Supp. to P41 - A Mouse Brain Imaging Research Network awarded by National Institutes of Health 2001 - 2003
- Integrated Center for InVivo Microscopy awarded by National Institutes of Health 1998 - 2003
- Developmental Correlates: Membrane/Contractile Protein awarded by National Institutes of Health 1997 - 2001
- Small Animal Imaging in the Basic Sciences Workshop awarded by National Institutes of Health 1999
- In Vivo Microscopy Of Environmental Lung Disease awarded by National Institutes of Health 1997 - 1999
- In Vivo Microscopy Of Enviromental Lung Disease awarded by National Institutes of Health 1996 - 1999
- Integrated Center For In Vivo Microscopy awarded by National Institutes of Health 1990 - 1998
- (97-0184) Effects of Spatial Inhomogeneity on Nonlinear Pattern Forming Systems awarded by National Science Foundation 1997 - 1998
- (96-0628) Experimental and Analytical Investigations of Flows in Porous Media awarded by National Science Foundation 1994 - 1997
- An Integrated Center For In Vivo Microscopy awarded by National Institutes of Health 1990 - 1996
- (93-0422) Experimental and Analytical Investigation of Flows in Porous Media awarded by National Science Foundation 1994 - 1996
- (95-0607) Experimental and Analytical Investigations of Flows in Porous Media awarded by National Science Foundation 1994 - 1996
- (93-0469) Experimental and Analytical Investigations of Flows in Porous Media awarded by Department of Energy 1990 - 1996
- In Vivo Assay Of Environmental Toxins With Mr Microscopy awarded by National Institutes of Health 1993 - 1995
- In Vivo Assay Of Environmental Toxins With Mri awarded by National Institutes of Health 1992 - 1994
- (90-0292) Analytical and Experimental Study of Instabilities in Buoyancy-driven Convection in Porous Media awarded by National Science Foundation 1990 - 1993
- An Integrated Image Processing/Analysis Network awarded by National Institutes of Health 1988 - 1990
- Nuclear Magnetic Resonance (Nmr) Imaging Facility awarded by National Institutes of Health 1986 - 1989
- Nuclear Magnetic Resonance Imaging Facility For Small Anim awarded by National Institutes of Health 1984 - 1986
Publications & Artistic Works
Selected Publications
- Books
  - Paxinos, G., Watson, C., Calabrese, E., Badea, A., & Johnson, G. (2015). An MRI/DTI Atlas of the Rat Brain. Elsevier, Academic Press.
- Academic Articles
  - Allan Johnson, G., Wang, N., Anderson, R. J., Chen, M., Cofer, G. P., Gee, J. C., … White, L. E. (2019). Whole mouse brain connectomics.. J Comp Neurol, 527(13), 2146–2157. https://doi.org/10.1002/cne.24560
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  - Anderson, R. J., Cook, J. J., Delpratt, N., Nouls, J. C., Gu, B., McNamara, J. O., … Badea, A. (2019). Small Animal Multivariate Brain Analysis (SAMBA) - a High Throughput Pipeline with a Validation Framework.. Neuroinformatics, 17(3), 451–472. https://doi.org/10.1007/s12021-018-9410-0
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  - Wang, N., Mirando, A. J., Cofer, G., Qi, Y., Hilton, M. J., & Johnson, G. A. (2019). Diffusion tractography of the rat knee at microscopic resolution.. Magn Reson Med, 81(6), 3775–3786. https://doi.org/10.1002/mrm.27652
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  - Privratsky, J. R., Wang, N., Qi, Y., Ren, J., Morris, B. T., Hunting, J. C., … Crowley, S. D. (2019). Dynamic contrast-enhanced MRI promotes early detection of toxin-induced acute kidney injury.. Am J Physiol Renal Physiol, 316(2), F351–F359. https://doi.org/10.1152/ajprenal.00416.2018
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  - Wang, N., Cofer, G., Anderson, R. J., Qi, Y., Liu, C., & Johnson, G. A. (2018). Accelerating quantitative susceptibility imaging acquisition using compressed sensing.. Phys Med Biol, 63(24). https://doi.org/10.1088/1361-6560/aaf15d
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  - Wang, N., Anderson, R. J., Badea, A., Cofer, G., Dibb, R., Qi, Y., & Johnson, G. A. (2018). Whole mouse brain structural connectomics using magnetic resonance histology.. Brain Struct Funct, 223(9), 4323–4335. https://doi.org/10.1007/s00429-018-1750-x
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  - Nouls, J. C., Badea, A., Anderson, R. B. J., Cofer, G. P., & Allan Johnson, G. (2018). Diffusion tensor imaging using multiple coils for mouse brain connectomics.. Nmr Biomed, 31(6). https://doi.org/10.1002/nbm.3921
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  - Calabrese, E., Adil, S. M., Cofer, G., Perone, C. S., Cohen-Adad, J., Lad, S. P., & Johnson, G. A. (2018). Postmortem diffusion MRI of the entire human spinal cord at microscopic resolution.. Neuroimage Clin, 18, 963–971. https://doi.org/10.1016/j.nicl.2018.03.029
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  - Wei, H., Gibbs, E., Zhao, P., Wang, N., Cofer, G. P., Zhang, Y., … Liu, C. (2017). Susceptibility tensor imaging and tractography of collagen fibrils in the articular cartilage.. Magn Reson Med, 78(5), 1683–1690. https://doi.org/10.1002/mrm.26882
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  - Vetreno, R. P., Yaxley, R., Paniagua, B., Johnson, G. A., & Crews, F. T. (2017). Adult rat cortical thickness changes across age and following adolescent intermittent ethanol treatment.. Addict Biol, 22(3), 712–723. https://doi.org/10.1111/adb.12364
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  - Anderson, R. J., Cook, J. J., Delpratt, N. A., Nouls, J. C., Gu, B., McNamara, J. O., … Badea, A. (2017). An HPC Pipeline with Validation Framework for Small Animal Multivariate Brain Analysis (SAMBA).. Corr, abs/1709.10483.
  - Xie, L., Bennett, K. M., Liu, C., Johnson, G. A., Zhang, J. L., & Lee, V. S. (2016). MRI tools for assessment of microstructure and nephron function of the kidney.. Am J Physiol Renal Physiol, 311(6), F1109–F1124. https://doi.org/10.1152/ajprenal.00134.2016
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  - Wei, H., Xie, L., Dibb, R., Li, W., Decker, K., Zhang, Y., … Liu, C. (2016). Imaging whole-brain cytoarchitecture of mouse with MRI-based quantitative susceptibility mapping.. Neuroimage, 137, 107–115. https://doi.org/10.1016/j.neuroimage.2016.05.033
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  - Xie, L., Layton, A. T., Wang, N., Larson, P. E. Z., Zhang, J. L., Lee, V. S., … Johnson, G. A. (2016). Dynamic contrast-enhanced quantitative susceptibility mapping with ultrashort echo time MRI for evaluating renal function.. Am J Physiol Renal Physiol, 310(2), F174–F182. https://doi.org/10.1152/ajprenal.00351.2015
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  - Subashi, E., Cordero, F. J., Halvorson, K. G., Qi, Y., Nouls, J. C., Becher, O. J., & Johnson, G. A. (2016). Tumor location, but not H3.3K27M, significantly influences the blood-brain-barrier permeability in a genetic mouse model of pediatric high-grade glioma.. J Neurooncol, 126(2), 243–251. https://doi.org/10.1007/s11060-015-1969-9
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  - Calabrese, E., Badea, A., Cofer, G., Qi, Y., & Johnson, G. A. (2015). A Diffusion MRI Tractography Connectome of the Mouse Brain and Comparison with Neuronal Tracer Data.. Cereb Cortex, 25(11), 4628–4637. https://doi.org/10.1093/cercor/bhv121
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  - Calabrese, E., Badea, A., Coe, C. L., Lubach, G. R., Shi, Y., Styner, M. A., & Johnson, G. A. (2015). A diffusion tensor MRI atlas of the postmortem rhesus macaque brain.. Neuroimage, 117, 408–416. https://doi.org/10.1016/j.neuroimage.2015.05.072
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  - Calabrese, E., Hickey, P., Hulette, C., Zhang, J., Parente, B., Lad, S. P., & Johnson, G. A. (2015). Postmortem diffusion MRI of the human brainstem and thalamus for deep brain stimulator electrode localization.. Hum Brain Mapp, 36(8), 3167–3178. https://doi.org/10.1002/hbm.22836
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  - Borg, J. S., Vu, M.-A., Badea, C., Badea, A., Johnson, G. A., & Dzirasa, K. (2015). Localization of Metal Electrodes in the Intact Rat Brain Using Registration of 3D Microcomputed Tomography Images to a Magnetic Resonance Histology Atlas.. Eneuro, 2(4). https://doi.org/10.1523/ENEURO.0017-15.2015
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  - Johnson, G. A. (2015). Magnetic resonance histology.. J Magn Reson Imaging, 42(1), 1–2. https://doi.org/10.1002/jmri.24774
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  - Subashi, E., Qi, Y., & Johnson, G. A. (2015). Dynamic contrast-enhanced MR microscopy identifies regions of therapeutic response in a preclinical model of colorectal adenocarcinoma.. Med Phys, 42(5), 2482–2488. https://doi.org/10.1118/1.4917525
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  - Xie, L., Qi, Y., Subashi, E., Liao, G., Miller-DeGraff, L., Jetten, A. M., & Johnson, G. A. (2015). 4D MRI of polycystic kidneys from rapamycin-treated Glis3-deficient mice.. Nmr Biomed, 28(5), 546–554. https://doi.org/10.1002/nbm.3281
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  - Xie, L., Dibb, R., Cofer, G. P., Li, W., Nicholls, P. J., Johnson, G. A., & Liu, C. (2015). Susceptibility tensor imaging of the kidney and its microstructural underpinnings.. Magn Reson Med, 73(3), 1270–1281. https://doi.org/10.1002/mrm.25219
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  - Papp, E. A., Leergaard, T. B., Calabrese, E., Johnson, G. A., & Bjaalie, J. G. (2015). Addendum to “Waxholm Space atlas of the Sprague Dawley rat brain” [NeuroImage 97 (2014) 374-386].. Neuroimage, 105, 561–562. https://doi.org/10.1016/j.neuroimage.2014.10.017
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  - Cao, W., Li, W., Han, H., O’Leary-Moore, S. K., Sulik, K. K., Allan Johnson, G., & Liu, C. (2014). Prenatal alcohol exposure reduces magnetic susceptibility contrast and anisotropy in the white matter of mouse brains.. Neuroimage, 102 Pt 2, 748–755. https://doi.org/10.1016/j.neuroimage.2014.08.035
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  - Calabrese, E., Badea, A., Coe, C. L., Lubach, G. R., Styner, M. A., & Johnson, G. A. (2014). Investigating the tradeoffs between spatial resolution and diffusion sampling for brain mapping with diffusion tractography: time well spent?. Hum Brain Mapp, 35(11), 5667–5685. https://doi.org/10.1002/hbm.22578
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  - Angeli, S., Befera, N., Peyrat, J.-M., Calabrese, E., Johnson, G. A., & Constantinides, C. (2014). A high-resolution cardiovascular magnetic resonance diffusion tensor map from ex-vivo C57BL/6 murine hearts.. J Cardiovasc Magn Reson, 16. https://doi.org/10.1186/s12968-014-0077-x
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  - Xie, L., Subashi, E., Qi, Y., Knepper, M. A., & Johnson, G. A. (2014). Four-dimensional MRI of renal function in the developing mouse.. Nmr Biomed, 27(9), 1094–1102. https://doi.org/10.1002/nbm.3162
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  - Papp, E. A., Leergaard, T. B., Calabrese, E., Johnson, G. A., & Bjaalie, J. G. (2014). Waxholm Space atlas of the Sprague Dawley rat brain.. Neuroimage, 97, 374–386. https://doi.org/10.1016/j.neuroimage.2014.04.001
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  - Calabrese, E., Du, F., Garman, R. H., Johnson, G. A., Riccio, C., Tong, L. C., & Long, J. B. (2014). Diffusion tensor imaging reveals white matter injury in a rat model of repetitive blast-induced traumatic brain injury.. J Neurotrauma, 31(10), 938–950. https://doi.org/10.1089/neu.2013.3144
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  - Johnson, G. A., Calabrese, E., Little, P. B., Hedlund, L., Qi, Y., & Badea, A. (2014). Quantitative mapping of trimethyltin injury in the rat brain using magnetic resonance histology.. Neurotoxicology, 42, 12–23. https://doi.org/10.1016/j.neuro.2014.02.009
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  - Befera, N. T., Badea, C. T., & Johnson, G. A. (2014). Comparison of 4D-microSPECT and microCT for murine cardiac function.. Mol Imaging Biol, 16(2), 235–245. https://doi.org/10.1007/s11307-013-0686-z
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  - Argyridis, I., Li, W., Johnson, G. A., & Liu, C. (2014). Quantitative magnetic susceptibility of the developing mouse brain reveals microstructural changes in the white matter.. Neuroimage, 88, 134–142. https://doi.org/10.1016/j.neuroimage.2013.11.026
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  - Ashton, J. R., Befera, N., Clark, D., Qi, Y., Mao, L., Rockman, H. A., … Badea, C. T. (2014). Anatomical and functional imaging of myocardial infarction in mice using micro-CT and eXIA 160 contrast agent.. Contrast Media Mol Imaging, 9(2), 161–168. https://doi.org/10.1002/cmmi.1557
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  - Gyengesi, E., Calabrese, E., Sherrier, M. C., Johnson, G. A., Paxinos, G., & Watson, C. (2014). Semi-automated 3D segmentation of major tracts in the rat brain: comparing DTI with standard histological methods.. Brain Struct Funct, 219(2), 539–550. https://doi.org/10.1007/s00429-013-0516-8
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  - Lee, C.-L., Min, H., Befera, N., Clark, D., Qi, Y., Das, S., … Kirsch, D. G. (2014). Assessing cardiac injury in mice with dual energy-microCT, 4D-microCT, and microSPECT imaging after partial heart irradiation.. Int J Radiat Oncol Biol Phys, 88(3), 686–693. https://doi.org/10.1016/j.ijrobp.2013.11.238
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  - Subashi, E., Choudhury, K. R., & Johnson, G. A. (2014). An analysis of the uncertainty and bias in DCE-MRI measurements using the spoiled gradient-recalled echo pulse sequence.. Med Phys, 41(3). https://doi.org/10.1118/1.4865790
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  - Cutlip, R. G., Hollander, M. S., Johnson, G. A., Johnson, B. W., Friend, S. A., & Baker, B. A. (2014). Magnetic resonance imaging of graded skeletal muscle injury in live rats.. Environ Health Insights, 8(Suppl 1), 31–39. https://doi.org/10.4137/EHI.S15255
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  - Lipinski, R. J., Holloway, H. T., O’Leary-Moore, S. K., Ament, J. J., Pecevich, S. J., Cofer, G. P., … Sulik, K. K. (2014). Characterization of subtle brain abnormalities in a mouse model of Hedgehog pathway antagonist-induced cleft lip and palate.. Plos One, 9(7). https://doi.org/10.1371/journal.pone.0102603
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  - Xie, L., Sparks, M. A., Li, W., Qi, Y., Liu, C., Coffman, T. M., & Johnson, G. A. (2013). Quantitative susceptibility mapping of kidney inflammation and fibrosis in type 1 angiotensin receptor-deficient mice.. Nmr Biomed, 26(12), 1853–1863. https://doi.org/10.1002/nbm.3039
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  - Calabrese, E., & Johnson, G. A. (2013). Diffusion tensor magnetic resonance histology reveals microstructural changes in the developing rat brain.. Neuroimage, 79, 329–339. https://doi.org/10.1016/j.neuroimage.2013.04.101
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  - Parnell, S. E., Holloway, H. T., O’Leary-Moore, S. K., Dehart, D. B., Paniaqua, B., Oguz, I., … Sulik, K. K. (2013). Magnetic resonance microscopy-based analyses of the neuroanatomical effects of gestational day 9 ethanol exposure in mice.. Neurotoxicol Teratol, 39, 77–83. https://doi.org/10.1016/j.ntt.2013.07.009
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  - Johnson, G. A., Badea, A., Calabrese, E., Liu, C., & Xie, L. (2013). Magnetic resonance histology: cool images- but who cares?. Toxicology Letters, 221, S50–S50. https://doi.org/10.1016/j.toxlet.2013.06.183
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  - Clark, D., Badea, A., Johnson, G. A., & Badea, C. T. (2013). Constructing a 4D murine cardiac micro-CT atlas for automated segmentation and phenotyping applications. Progress in Biomedical Optics and Imaging Proceedings of Spie, 8669. https://doi.org/10.1117/12.2007043
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  - O’Leary-Moore, S. K., Budin, F., Paniagua, B., Oguz, I., Johnson, G. A., & Sulik, K. K. (2013). HIGH-RESOLUTION NEUROIMAGING REVEALS A RANGE OF CORPUS CALLOSUM INSULT INDUCED BY ETHANOL ON GESTATIONAL DAY 7 INMICE. Alcoholism Clinical and Experimental Research, 37, 167A-167A.
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  - Antonsen, B. T., Jiang, Y., Veraart, J., Qu, H., Nguyen, H. P., Sijbers, J., … Leergaard, T. B. (2013). Altered diffusion tensor imaging measurements in aged transgenic Huntington disease rats.. Brain Struct Funct, 218(3), 767–778. https://doi.org/10.1007/s00429-012-0427-0
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  - Calabrese, E., Badea, A., Watson, C., & Johnson, G. A. (2013). A quantitative magnetic resonance histology atlas of postnatal rat brain development with regional estimates of growth and variability.. Neuroimage, 71, 196–206. https://doi.org/10.1016/j.neuroimage.2013.01.017
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  - Moding, E. J., Clark, D. P., Qi, Y., Li, Y., Ma, Y., Ghaghada, K., … Badea, C. T. (2013). Dual-energy micro-computed tomography imaging of radiation-induced vascular changes in primary mouse sarcomas.. Int J Radiat Oncol Biol Phys, 85(5), 1353–1359. https://doi.org/10.1016/j.ijrobp.2012.09.027
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  - Pandit, P., Johnston, S. M., Qi, Y., Story, J., Nelson, R., & Johnson, G. A. (2013). The utility of micro-CT and MRI in the assessment of longitudinal growth of liver metastases in a preclinical model of colon carcinoma.. Acad Radiol, 20(4), 430–439. https://doi.org/10.1016/j.acra.2012.09.030
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  - Bhavane, R., Badea, C., Ghaghada, K. B., Clark, D., Vela, D., Moturu, A., … Willerson, J. T. (2013). Dual-energy computed tomography imaging of atherosclerotic plaques in a mouse model using a liposomal-iodine nanoparticle contrast agent.. Circ Cardiovasc Imaging, 6(2), 285–294. https://doi.org/10.1161/CIRCIMAGING.112.000119
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  - Calabrese, E., Johnson, G. A., & Watson, C. (2013). An ontology-based segmentation scheme for tracking postnatal changes in the developing rodent brain with MRI.. Neuroimage, 67, 375–384. https://doi.org/10.1016/j.neuroimage.2012.11.037
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  - Subashi, E., Moding, E. J., Cofer, G. P., MacFall, J. R., Kirsch, D. G., Qi, Y., & Johnson, G. A. (2013). A comparison of radial keyhole strategies for high spatial and temporal resolution 4D contrast-enhanced MRI in small animal tumor models.. Med Phys, 40(2). https://doi.org/10.1118/1.4774050
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  - Antonsen, B. T., Jiang, Y., Veraart, J., Qu, H., Nguyen, H. P., Sijbers, J., … Leergaard, T. B. (2013). Altered diffusion tensor imaging measurements in aged transgenic Huntington disease rats. Brain Structure and Function, 218(3), 767–778. https://doi.org/10.1007/s00429-012-0427-0
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  - Badea, A., & Johnson, G. A. (2013). Magnetic resonance microscopy.. Stud Health Technol Inform, 185, 153–184.
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  - Badea, C. T., Hedlund, L. W., & Johnson, G. A. (2013). A LabVIEW Platform for Preclinical Imaging Using Digital Subtraction Angiography and Micro-CT.. J Med Eng, 2013. https://doi.org/10.1155/2013/581617
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  - Badea, A., Gewalt, S., Avants, B. B., Cook, J. J., & Johnson, G. A. (2012). Quantitative mouse brain phenotyping based on single and multispectral MR protocols.. Neuroimage, 63(3), 1633–1645. https://doi.org/10.1016/j.neuroimage.2012.07.021
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  - Howles, G. P., Qi, Y., Rosenzweig, S. J., Nightingale, K. R., & Johnson, G. A. (2012). Functional neuroimaging using ultrasonic blood-brain barrier disruption and manganese-enhanced MRI.. Journal of Visualized Experiments : Jove, (65).
  - Clark, D., Badea, A., Liu, Y., Johnson, G. A., & Badea, C. T. (2012). Registration-based segmentation of murine 4D cardiac micro-CT data using symmetric normalization.. Phys Med Biol, 57(19), 6125–6145. https://doi.org/10.1088/0031-9155/57/19/6125
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  - Johnson, G. A., Calabrese, E., Badea, A., Paxinos, G., & Watson, C. (2012). A multidimensional magnetic resonance histology atlas of the Wistar rat brain.. Neuroimage, 62(3), 1848–1856. https://doi.org/10.1016/j.neuroimage.2012.05.041
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  - Johnston, S. M., Johnson, G. A., & Badea, C. T. (2012). Temporal and spectral imaging with micro-CT.. Med Phys, 39(8), 4943–4958. https://doi.org/10.1118/1.4736809
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  - Howles, G. P., Qi, Y., Rosenzweig, S. J., Nightingale, K. R., & Johnson, G. A. (2012). Functional neuroimaging using ultrasonic blood-brain barrier disruption and manganese-enhanced MRI.. J Vis Exp, (65). https://doi.org/10.3791/4055
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  - Xie, L., Cianciolo, R. E., Hulette, B., Lee, H. W., Qi, Y., Cofer, G., & Johnson, G. A. (2012). Magnetic resonance histology of age-related nephropathy in the Sprague Dawley rat.. Toxicol Pathol, 40(5), 764–778. https://doi.org/10.1177/0192623312441408
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  - O’Leary-Moore, S. K., Johnson, G. A., Calabrese, E., Budin, F., Oguz, I., Styner, M. A., … Sulik, K. K. (2012). DIFFUSION TENSOR IMAGING (DTI)-BASED ANALYSIS OF FIBER TRACT ABNORMALITIES IN A MOUSE MODEL OF PRENATAL ALCOHOL EXPOSURE. Alcoholism Clinical and Experimental Research, 36, 312A-312A.
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  - Perperidis, D., Bucholz, E., Johnson, G. A., & Constantinides, C. (2012). Morphological studies of the murine heart based on probabilistic and statistical atlases.. Comput Med Imaging Graph, 36(2), 119–129. https://doi.org/10.1016/j.compmedimag.2011.07.001
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  - Liu, C., Li, W., Wu, B., Jiang, Y., & Johnson, G. A. (2012). 3D fiber tractography with susceptibility tensor imaging.. Neuroimage, 59(2), 1290–1298. https://doi.org/10.1016/j.neuroimage.2011.07.096
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  - Guo, X., Johnston, S. M., Qi, Y., Johnson, G. A., & Badea, C. T. (2012). 4D micro-CT using fast prospective gating.. Phys Med Biol, 57(1), 257–271. https://doi.org/10.1088/0031-9155/57/1/257
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  - Badea, A., & Johnson, G. A. (2012). Magnetic resonance microscopy.. Anal Cell Pathol (Amst), 35(4), 205–227. https://doi.org/10.3233/ACP-2011-0050
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  - Badea, C. T., Athreya, K. K., Espinosa, G., Clark, D., Ghafoori, A. P., Li, Y., … Ghaghada, K. B. (2012). Computed tomography imaging of primary lung cancer in mice using a liposomal-iodinated contrast agent.. Plos One, 7(4). https://doi.org/10.1371/journal.pone.0034496
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  - Lipinski, R. J., Hammond, P., O’Leary-Moore, S. K., Ament, J. J., Pecevich, S. J., Jiang, Y., … Sulik, K. K. (2012). Ethanol-induced face-brain dysmorphology patterns are correlative and exposure-stage dependent.. Plos One, 7(8). https://doi.org/10.1371/journal.pone.0043067
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  - Macfall, J. S., & Johnson, G. A. (2012). Plants, seeds, roots, and soils as applications of magnetic resonance microscopy. Emagres, 1(1), 147–154. https://doi.org/10.1002/9780470034590.emrstm0396
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  - Veraart, J., Leergaard, T. B., Antonsen, B. T., Van Hecke, W., Blockx, I., Jeurissen, B., … Sijbers, J. (2011). Population-averaged diffusion tensor imaging atlas of the Sprague Dawley rat brain.. Neuroimage, 58(4), 975–983. https://doi.org/10.1016/j.neuroimage.2011.06.063
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  - Badea, C. T., Hedlund, L. W., Qi, Y., Berridge, B., & Johnson, G. A. (2011). In vivo imaging of rat coronary arteries using bi-plane digital subtraction angiography.. J Pharmacol Toxicol Methods, 64(2), 151–157. https://doi.org/10.1016/j.vascn.2011.05.008
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  - Lin, M., Qi, Y., Chen, A. F., Badea, C. T., & Johnson, G. A. (2011). Phenylephrine-modulated cardiopulmonary blood flow measured with use of X-ray digital subtraction angiography.. J Pharmacol Toxicol Methods, 64(2), 180–186. https://doi.org/10.1016/j.vascn.2011.08.001
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  - Zhang, X., Badea, C., Hood, G., Wetzel, A., Qi, Y., Stiles, J., & Johnson, G. A. (2011). High-resolution reconstruction of fluorescent inclusions in mouse thorax using anatomically guided sampling and parallel Monte Carlo computing.. Biomed Opt Express, 2(9), 2449–2460. https://doi.org/10.1364/BOE.2.002449
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  - Badea, C. T., Johnston, S. M., Qi, Y., & Johnson, G. A. (2011). 4D micro-CT for cardiac and perfusion applications with view under sampling.. Phys Med Biol, 56(11), 3351–3369. https://doi.org/10.1088/0031-9155/56/11/011
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  - Jiang, Y., & Johnson, G. A. (2011). Microscopic diffusion tensor atlas of the mouse brain.. Neuroimage, 56(3), 1235–1243. https://doi.org/10.1016/j.neuroimage.2011.03.031
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  - Liu, C., Li, W., Johnson, G. A., & Wu, B. (2011). High-field (9.4 T) MRI of brain dysmyelination by quantitative mapping of magnetic susceptibility.. Neuroimage, 56(3), 930–938. https://doi.org/10.1016/j.neuroimage.2011.02.024
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  - Rajagopal, S., Kovacs, J., Badea, C., Johnson, G. A., Rockman, H. A., Piantadosi, C. A., & Lefkowitz, R. J. (2011). BETA-ARRESTINS REGULATE SIGNALING BY BONE MORPHOGENETIC PROTEIN TYPE II RECEPTOR IN PULMONARY ARTERIAL HYPERTENSION. Journal of the American College of Cardiology, 57(14), E2046–E2046. https://doi.org/10.1016/s0735-1097(11)62046-9
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  - Bowden, D. M., Johnson, G. A., Zaborsky, L., Green, W. D. K., Moore, E., Badea, A., … Bookstein, F. L. (2011). A symmetrical Waxholm canonical mouse brain for NeuroMaps.. J Neurosci Methods, 195(2), 170–175. https://doi.org/10.1016/j.jneumeth.2010.11.028
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  - Hawrylycz, M., Baldock, R. A., Burger, A., Hashikawa, T., Johnson, G. A., Martone, M., … Boline, J. (2011). Digital atlasing and standardization in the mouse brain.. Plos Comput Biol, 7(2). https://doi.org/10.1371/journal.pcbi.1001065
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  - Pandit, P., Qi, Y., King, K. F., & Johnson, G. A. (2011). Reduction of artifacts in T2 -weighted PROPELLER in high-field preclinical imaging.. Magn Reson Med, 65(2), 538–543. https://doi.org/10.1002/mrm.22624
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  - Badea, C. T., Hedlund, L. W., Cook, J., Berridge, B. R., & Johnson, G. A. (2011). Micro-CT imaging assessment of dobutamine-induced cardiac stress in rats.. J Pharmacol Toxicol Methods, 63(1), 24–29. https://doi.org/10.1016/j.vascn.2010.04.002
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  - Bolon, B., Garman, R. H., Gundersen, H. J. G., Allan Johnson, G., Kaufmann, W., Krinke, G., … Jensen, K. (2011). Continuing education course #3: current practices and future trends in neuropathology assessment for developmental neurotoxicity testing.. Toxicol Pathol, 39(1), 289–293. https://doi.org/10.1177/0192623310386247
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  - Ghaghada, K. B., Badea, C. T., Karumbaiah, L., Fettig, N., Bellamkonda, R. V., Johnson, G. A., & Annapragada, A. (2011). Evaluation of tumor microenvironment in an animal model using a nanoparticle contrast agent in computed tomography imaging.. Acad Radiol, 18(1), 20–30. https://doi.org/10.1016/j.acra.2010.09.003
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  - Johnson, G. A., Badea, A., & Jiang, Y. (2011). Quantitative neuromorphometry using magnetic resonance histology.. Toxicol Pathol, 39(1), 85–91. https://doi.org/10.1177/0192623310389622
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  - Peterson, R. A., Gabrielson, K. L., Allan Johnson, G., Pomper, M. G., Coatney, R. W., & Winkelmann, C. T. (2011). Continuing education course #1: non-invasive imaging as a problem-solving tool and translational biomarker strategy in toxicologic pathology.. Toxicol Pathol, 39(1), 267–272. https://doi.org/10.1177/0192623310390392
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  - Johnson, G. A., Badea, A., Brandenburg, J., Cofer, G., Fubara, B., Liu, S., & Nissanov, J. (2010). Waxholm space: an image-based reference for coordinating mouse brain research.. Neuroimage, 53(2), 365–372. https://doi.org/10.1016/j.neuroimage.2010.06.067
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  - O’Leary-Moore, S. K., Parnell, S. E., Godin, E. A., Dehart, D. B., Ament, J. J., Khan, A. A., … Sulik, K. K. (2010). Magnetic resonance microscopy-based analyses of the brains of normal and ethanol-exposed fetal mice.. Birth Defects Res a Clin Mol Teratol, 88(11), 953–964. https://doi.org/10.1002/bdra.20719
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  - Brinegar, C., Schmitter, S. S., Mistry, N. N., Johnson, G. A., & Liang, Z.-P. (2010). Improving temporal resolution of pulmonary perfusion imaging in rats using the partially separable functions model.. Magn Reson Med, 64(4), 1162–1170. https://doi.org/10.1002/mrm.22500
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  - Howles, G. P., Bing, K. F., Qi, Y., Rosenzweig, S. J., Nightingale, K. R., & Johnson, G. A. (2010). Contrast-enhanced in vivo magnetic resonance microscopy of the mouse brain enabled by noninvasive opening of the blood-brain barrier with ultrasound.. Magn Reson Med, 64(4), 995–1004. https://doi.org/10.1002/mrm.22411
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  - Pandit, P., Qi, Y., Story, J., King, K. F., & Johnson, G. A. (2010). Multishot PROPELLER for high-field preclinical MRI.. Magn Reson Med, 64(1), 47–53. https://doi.org/10.1002/mrm.22376
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  - Howles, G. P., Qi, Y., & Johnson, G. A. (2010). Ultrasonic disruption of the blood-brain barrier enables in vivo functional mapping of the mouse barrel field cortex with manganese-enhanced MRI.. Neuroimage, 50(4), 1464–1471. https://doi.org/10.1016/j.neuroimage.2010.01.050
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  - Badea, A., Johnson, G. A., & Jankowsky, J. L. (2010). Remote sites of structural atrophy predict later amyloid formation in a mouse model of Alzheimer's disease.. Neuroimage, 50(2), 416–427. https://doi.org/10.1016/j.neuroimage.2009.12.070
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  - Bucholz, E., Ghaghada, K., Qi, Y., Mukundan, S., Rockman, H. A., & Johnson, G. A. (2010). Cardiovascular phenotyping of the mouse heart using a 4D radial acquisition and liposomal Gd-DTPA-BMA.. Magn Reson Med, 63(4), 979–987. https://doi.org/10.1002/mrm.22259
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  - Jiang, Y., & Johnson, G. A. (2010). Microscopic diffusion tensor imaging of the mouse brain.. Neuroimage, 50(2), 465–471. https://doi.org/10.1016/j.neuroimage.2009.12.057
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  - Mistry, N. N., Qi, Y., Hedlund, L. W., & Johnson, G. A. (2010). Ventilation/perfusion imaging in a rat model of airway obstruction.. Magn Reson Med, 63(3), 728–735. https://doi.org/10.1002/mrm.22221
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  - Mistry, N. N., Thomas, A., Kaushik, S. S., Johnson, G. A., & Driehuys, B. (2010). Quantitative analysis of hyperpolarized 3He ventilation changes in mice challenged with methacholine.. Magn Reson Med, 63(3), 658–666. https://doi.org/10.1002/mrm.22311
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  - Badea, C. T., Johnston, S. M., Subashi, E., Qi, Y., Hedlund, L. W., & Johnson, G. A. (2010). Lung perfusion imaging in small animals using 4D micro-CT at heartbeat temporal resolution.. Med Phys, 37(1), 54–62. https://doi.org/10.1118/1.3264619
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  - Godin, E. A., O’Leary-Moore, S. K., Khan, A. A., Parnell, S. E., Ament, J. J., Dehart, D. B., … Sulik, K. K. (2010). Magnetic resonance microscopy defines ethanol-induced brain abnormalities in prenatal mice: effects of acute insult on gestational day 7.. Alcohol Clin Exp Res, 34(1), 98–111. https://doi.org/10.1111/j.1530-0277.2009.01071.x
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  - Petiet, A., & Johnson, G. A. (2010). Active staining of mouse embryos for magnetic resonance microscopy.. Methods Mol Biol, 611, 141–149. https://doi.org/10.1007/978-1-60327-345-9_11
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  - Howles, G. P., Ghaghada, K. B., Qi, Y., Mukundan, S., & Johnson, G. A. (2009). High-resolution magnetic resonance angiography in the mouse using a nanoparticle blood-pool contrast agent.. Magn Reson Med, 62(6), 1447–1456. https://doi.org/10.1002/mrm.22154
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  - MacKenzie-Graham, A., Tiwari-Woodruff, S. K., Sharma, G., Aguilar, C., Vo, K. T., Strickland, L. V., … Voskuhl, R. R. (2009). Purkinje cell loss in experimental autoimmune encephalomyelitis.. Neuroimage, 48(4), 637–651. https://doi.org/10.1016/j.neuroimage.2009.06.073
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  - Lin, M., Marshall, C. T., Qi, Y., Johnston, S. M., Badea, C. T., Piantadosi, C. A., & Johnson, G. A. (2009). Quantitative blood flow measurements in the small animal cardiopulmonary system using digital subtraction angiography.. Med Phys, 36(11), 5347–5358. https://doi.org/10.1118/1.3231823
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  - Zhang, X., Badea, C. T., & Johnson, G. A. (2009). Three-dimensional reconstruction in free-space whole-body fluorescence tomography of mice using optically reconstructed surface and atlas anatomy.. J Biomed Opt, 14(6). https://doi.org/10.1117/1.3258836
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  - Badea, A., Johnson, G. A., & Williams, R. W. (2009). Genetic dissection of the mouse CNS using magnetic resonance microscopy.. Curr Opin Neurol, 22(4), 379–386. https://doi.org/10.1097/WCO.0b013e32832d9b86
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  - Howles, G. P., Nouls, J. C., Qi, Y., & Johnson, G. A. (2009). Rapid production of specialized animal handling devices using computer-aided design and solid freeform fabrication.. J Magn Reson Imaging, 30(2), 466–471. https://doi.org/10.1002/jmri.21821
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  - Parnell, S. E., O’Leary-Moore, S. K., Godin, E. A., Dehart, D. B., Johnson, B. W., Allan Johnson, G., … Sulik, K. K. (2009). Magnetic resonance microscopy defines ethanol-induced brain abnormalities in prenatal mice: effects of acute insult on gestational day 8.. Alcohol Clin Exp Res, 33(6), 1001–1011. https://doi.org/10.1111/j.1530-0277.2009.00921.x
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  - Badea, A., Johnson, G. A., & Williams, R. W. (2009). Genetic dissection of the mouse brain using high-field magnetic resonance microscopy.. Neuroimage, 45(4), 1067–1079. https://doi.org/10.1016/j.neuroimage.2009.01.021
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  - Song, J., Liu, Y., Gewalt, S. L., Cofer, G., Johnson, G. A., & Liu, Q. H. (2009). Least-square NUFFT methods applied to 2-D and 3-D radially encoded MR image reconstruction.. Ieee Trans Biomed Eng, 56(4), 1134–1142. https://doi.org/10.1109/TBME.2009.2012721
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  - Badea, C. T., Drangova, M., Holdsworth, D. W., & Johnson, G. A. (2008). In vivo small-animal imaging using micro-CT and digital subtraction angiography.. Phys Med Biol, 53(19), R319–R350. https://doi.org/10.1088/0031-9155/53/19/R01
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  - Johnson, K., Badea, C., Hedlund, L., & Johnson, G. A. (2008). Imaging techniques for small animal imaging models of pulmonary disease: Micro-CT (Toxicologic Pathology (2007) 35, 5 (9-64)). Toxicologic Pathology, 36(6). https://doi.org/10.1177/0192623308323921
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  - Petiet, A. E., Kaufman, M. H., Goddeeris, M. M., Brandenburg, J., Elmore, S. A., & Johnson, G. A. (2008). High-resolution magnetic resonance histology of the embryonic and neonatal mouse: a 4D atlas and morphologic database.. Proc Natl Acad Sci U S A, 105(34), 12331–12336. https://doi.org/10.1073/pnas.0805747105
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  - De Lin, M., Toncheva, G., Nguyen, G., Kim, S., Anderson-Evans, C., Johnson, G. A., & Yoshizumi, T. T. (2008). Application of MOSFET detectors for dosimetry in small animal radiography using short exposure times.. Radiat Res, 170(2), 260–263. https://doi.org/10.1667/RR1328.1
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  - Shofer, S., Badea, C., Qi, Y., Potts, E., Foster, W. M., & Johnson, G. A. (2008). A micro-CT analysis of murine lung recruitment in bleomycin-induced lung injury.. J Appl Physiol (1985), 105(2), 669–677. https://doi.org/10.1152/japplphysiol.00980.2007
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  - Bucholz, E., Ghaghada, K., Qi, Y., Mukundan, S., & Johnson, G. A. (2008). Four-dimensional MR microscopy of the mouse heart using radial acquisition and liposomal gadolinium contrast agent.. Magn Reson Med, 60(1), 111–118. https://doi.org/10.1002/mrm.21618
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  - Goddeeris, M. M., Rho, S., Petiet, A., Davenport, C. L., Johnson, G. A., Meyers, E. N., & Klingensmith, J. (2008). Intracardiac septation requires hedgehog-dependent cellular contributions from outside the heart.. Development, 135(10), 1887–1895. https://doi.org/10.1242/dev.016147
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  - Johnston, S. M., Johnson, G. A., & Badea, C. T. (2008). Geometric calibration for a dual tube/detector micro-CT system.. Med Phys, 35(5), 1820–1829. https://doi.org/10.1118/1.2900000
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  - Badea, C. T., Wetzel, A. W., Mistry, N., Pomerantz, S., Nave, D., & Johnson, G. A. (2008). Left ventricle volume measurements in cardiac micro-CT: the impact of radiation dose and contrast agent.. Comput Med Imaging Graph, 32(3), 239–250. https://doi.org/10.1016/j.compmedimag.2007.12.004
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  - Nouls, J. C., Izenson, M. G., Greeley, H. P., & Johnson, G. A. (2008). Design of a superconducting volume coil for magnetic resonance microscopy of the mouse brain.. J Magn Reson, 191(2), 231–238. https://doi.org/10.1016/j.jmr.2007.12.018
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  - Bucholz, E. K., Song, J., Johnson, G. A., & Hancu, I. (2008). Multispectral imaging with three-dimensional rosette trajectories.. Magn Reson Med, 59(3), 581–589. https://doi.org/10.1002/mrm.21551
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  - Oldham, M., Sakhalkar, H., Oliver, T., Allan Johnson, G., & Dewhirst, M. (2008). Optical clearing of unsectioned specimens for three-dimensional imaging via optical transmission and emission tomography.. J Biomed Opt, 13(2). https://doi.org/10.1117/1.2907968
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  - de Lin, M., Ning, L., Badea, C. T., Mistry, N. N., Qi, Y., & Johnson, G. A. (2008). A high-precision contrast injector for small animal x-ray digital subtraction angiography.. Ieee Trans Biomed Eng, 55(3), 1082–1091. https://doi.org/10.1109/TBME.2007.909541
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  - Mistry, N. N., Pollaro, J., Song, J., De Lin, M., & Johnson, G. A. (2008). Pulmonary perfusion imaging in the rodent lung using dynamic contrast-enhanced MRI.. Magn Reson Med, 59(2), 289–297. https://doi.org/10.1002/mrm.21353
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  - Sharief, A. A., Badea, A., Dale, A. M., & Johnson, G. A. (2008). Automated segmentation of the actively stained mouse brain using multi-spectral MR microscopy.. Neuroimage, 39(1), 136–145. https://doi.org/10.1016/j.neuroimage.2007.08.028
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  - Driehuys, B., Walker, J., Pollaro, J., Cofer, G. P., Mistry, N., Schwartz, D., & Johnson, G. A. (2007). 3He MRI in mouse models of asthma.. Magn Reson Med, 58(5), 893–900. https://doi.org/10.1002/mrm.21306
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  - Song, J., Liu, Q. H., Johnson, G. A., & Badea, C. T. (2007). Sparseness prior based iterative image reconstruction for retrospectively gated cardiac micro-CT.. Med Phys, 34(11), 4476–4483. https://doi.org/10.1118/1.2795830
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  - Badea, A., Ali-Sharief, A. A., & Johnson, G. A. (2007). Morphometric analysis of the C57BL/6J mouse brain.. Neuroimage, 37(3), 683–693. https://doi.org/10.1016/j.neuroimage.2007.05.046
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  - Johnson, G. A., Ali-Sharief, A., Badea, A., Brandenburg, J., Cofer, G., Fubara, B., … Upchurch, L. (2007). High-throughput morphologic phenotyping of the mouse brain with magnetic resonance histology.. Neuroimage, 37(1), 82–89. https://doi.org/10.1016/j.neuroimage.2007.05.013
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  - Badea, C. T., Hedlund, L. W., Mackel, J. F. B., Mao, L., Rockman, H. A., & Johnson, G. A. (2007). Cardiac micro-computed tomography for morphological and functional phenotyping of muscle LIM protein null mice.. Mol Imaging, 6(4), 261–268.
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  - Nahrendorf, M., Badea, C., Hedlund, L. W., Figueiredo, J.-L., Sosnovik, D. E., Johnson, G. A., & Weissleder, R. (2007). High-resolution imaging of murine myocardial infarction with delayed-enhancement cine micro-CT.. Am J Physiol Heart Circ Physiol, 292(6), H3172–H3178. https://doi.org/10.1152/ajpheart.01307.2006
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  - Petiet, A., Hedlund, L., & Johnson, G. A. (2007). Staining methods for magnetic resonance microscopy of the rat fetus.. J Magn Reson Imaging, 25(6), 1192–1198. https://doi.org/10.1002/jmri.20932
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  - Badea, C. T., Hedlund, L. W., De Lin, M., Mackel, J. S. B., Samei, E., & Johnson, G. A. (2007). Tomographic digital subtraction angiography for lung perfusion estimation in rodents.. Med Phys, 34(5), 1546–1555. https://doi.org/10.1118/1.2717384
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  - Rice, H. E., Hsu, E. W., Sheng, H., Evenson, D. A., Freemerman, A. J., Safford, K. M., … Johnson, G. A. (2007). Superparamagnetic iron oxide labeling and transplantation of adipose-derived stem cells in middle cerebral artery occlusion-injured mice.. Ajr Am J Roentgenol, 188(4), 1101–1108. https://doi.org/10.2214/AJR.06.0663
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  - Shofer, S., Badea, C., Auerbach, S., Schwartz, D. A., & Johnson, G. A. (2007). A micro-computed tomography-based method for the measurement of pulmonary compliance in healthy and bleomycin-exposed mice.. Exp Lung Res, 33(3–4), 169–183. https://doi.org/10.1080/01902140701364458
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  - Badea, A., Nicholls, P. J., Johnson, G. A., & Wetsel, W. C. (2007). Neuroanatomical phenotypes in the reeler mouse.. Neuroimage, 34(4), 1363–1374. https://doi.org/10.1016/j.neuroimage.2006.09.053
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  - Driehuys, B., Cofer, G. P., Pollaro, J., Mackel, J. B., Hedlund, L. W., & Johnson, G. A. (2006). Imaging alveolar-capillary gas transfer using hyperpolarized 129Xe MRI.. Proc Natl Acad Sci U S A, 103(48), 18278–18283. https://doi.org/10.1073/pnas.0608458103
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  - Lin, M. D., Samei, E., Badea, C. T., Yoshizumi, T. T., & Johnson, G. A. (2006). Optimized radiographic spectra for small animal digital subtraction angiography.. Med Phys, 33(11), 4249–4257. https://doi.org/10.1118/1.2356646
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  - Sharief, A. A., & Johnson, G. A. (2006). Enhanced T2 contrast for MR histology of the mouse brain.. Magn Reson Med, 56(4), 717–725. https://doi.org/10.1002/mrm.21026
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  - Oldham, M., Sakhalkar, H., Oliver, T., Wang, Y. M., Kirpatrick, J., Cao, Y., … Dewhirst, M. (2006). Three-dimensional imaging of xenograft tumors using optical computed and emission tomography.. Med Phys, 33(9), 3193–3202. https://doi.org/10.1118/1.2217109
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  - Badea, C. T., Hedlund, L. W., De Lin, M., Boslego Mackel, J. F., & Johnson, G. A. (2006). Tumor imaging in small animals with a combined micro-CT/micro-DSA system using iodinated conventional and blood pool contrast agents.. Contrast Media Mol Imaging, 1(4), 153–164. https://doi.org/10.1002/cmmi.103
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  - Mukundan, S., Ghaghada, K. B., Badea, C. T., Kao, C.-Y., Hedlund, L. W., Provenzale, J. M., … Annapragada, A. (2006). A liposomal nanoscale contrast agent for preclinical CT in mice.. Ajr Am J Roentgenol, 186(2), 300–307. https://doi.org/10.2214/AJR.05.0523
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  - Badea, C. T., Bucholz, E., Hedlund, L. W., Rockman, H. A., & Johnson, G. A. (2006). Imaging methods for morphological and functional phenotyping of the rodent heart.. Toxicol Pathol, 34(1), 111–117. https://doi.org/10.1080/01926230500404126
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  - Jaffe, T. A., Nelson, R. C., Johnson, G. A., Lee, E. R., Yoshizumi, T. T., Lowry, C. R., … Paulson, E. K. (2006). Optimization of multiplanar reformations from isotropic data sets acquired with 16-detector row helical CT scanner.. Radiology, 238(1), 292–299. https://doi.org/10.1148/radiol.2381050404
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  - Ali, A. A., Dale, A. M., Badea, A., & Johnson, G. A. (2005). Automated segmentation of neuroanatomical structures in multispectral MR microscopy of the mouse brain.. Neuroimage, 27(2), 425–435. https://doi.org/10.1016/j.neuroimage.2005.04.017
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  - Tengowski, M. W., Sutovsky, P., Hedlund, L. W., Guyot, D. J., Burkhardt, J. E., Thompson, W. E., … Johnson, G. A. (2005). Reproductive cytotoxicity is predicted by magnetic resonance microscopy and confirmed by ubiquitin-proteasome immunohistochemistry in a theophylline-induced model of rat testicular and epididymal toxicity.. Microsc Microanal, 11(4), 300–312. https://doi.org/10.1017/S143192760505021X
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  - Cyr, M., Caron, M. G., Johnson, G. A., & Laakso, A. (2005). Magnetic resonance imaging at microscopic resolution reveals subtle morphological changes in a mouse model of dopaminergic hyperfunction.. Neuroimage, 26(1), 83–90. https://doi.org/10.1016/j.neuroimage.2005.01.039
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  - Badea, C. T., Fubara, B., Hedlund, L. W., & Johnson, G. A. (2005). 4-D micro-CT of the mouse heart.. Mol Imaging, 4(2), 110–116.
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  - Maï, W., Badea, C. T., Wheeler, C. T., Hedlund, L. W., & Johnson, G. A. (2005). Effects of breathing and cardiac motion on spatial resolution in the microscopic imaging of rodents.. Magn Reson Med, 53(4), 858–865. https://doi.org/10.1002/mrm.20400
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  - Chen, B. T., Yordanov, A. T., & Johnson, G. A. (2005). Ventilation-synchronous magnetic resonance microscopy of pulmonary structure and ventilation in mice.. Magn Reson Med, 53(1), 69–75. https://doi.org/10.1002/mrm.20307
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  - Badea, C., Hedlund, L. W., & Johnson, G. A. (2004). Micro-CT with respiratory and cardiac gating.. Med Phys, 31(12), 3324–3329. https://doi.org/10.1118/1.1812604
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  - Chen, B. T., & Johnson, G. A. (2004). Dynamic lung morphology of methacholine-induced heterogeneous bronchoconstriction.. Magn Reson Med, 52(5), 1080–1086. https://doi.org/10.1002/mrm.20251
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  - Morgan, D. L., Little, P. B., Herr, D. W., Moser, V. C., Collins, B., Herbert, R., … Sills, R. C. (2004). Neurotoxicity of carbonyl sulfide in F344 rats following inhalation exposure for up to 12 weeks.. Toxicol Appl Pharmacol, 200(2), 131–145. https://doi.org/10.1016/j.taap.2004.04.013
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  - Sills, R. C., Morgan, D. L., Herr, D. W., Little, P. B., George, N. M., Ton, T. V., … Johnson, G. A. (2004). Contribution of magnetic resonance microscopy in the 12-week neurotoxicity evaluation of carbonyl sulfide in Fischer 344 rats.. Toxicol Pathol, 32(5), 501–510. https://doi.org/10.1080/01926230490493918
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  - Brau, A. C. S., Hedlund, L. W., & Johnson, G. A. (2004). Cine magnetic resonance microscopy of the rat heart using cardiorespiratory-synchronous projection reconstruction.. J Magn Reson Imaging, 20(1), 31–38. https://doi.org/10.1002/jmri.20089
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  - Maronpot, R. R., Sills, R. C., & Johnson, G. A. (2004). Applications of magnetic resonance microscopy.. Toxicol Pathol, 32 Suppl 2, 42–48. https://doi.org/10.1080/01926230490451707
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  - Sills, R. C., Morgan, D. L., Maronpot, R. R., & Johnson, G. A. (2004). Contribution of magnetic resonance microscopy in the biologic and mechanistic assessment of carbonyl sulfide neurotoxicity in F344 rats. Toxicology and Applied Pharmacology, 197(3), 151–152.
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  - Segars, W. P., Tsui, B. M. W., Frey, E. C., Johnson, G. A., & Berr, S. S. (2004). Development of a 4-D digital mouse phantom for molecular imaging research.. Mol Imaging Biol, 6(3), 149–159. https://doi.org/10.1016/j.mibio.2004.03.002
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  - Zhang, X., Tengowski, M., Fasulo, L., Botts, S., Suddarth, S. A., & Johnson, G. A. (2004). Measurement of fat/water ratios in rat liver using 3D three-point dixon MRI.. Magn Reson Med, 51(4), 697–702. https://doi.org/10.1002/mrm.20005
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  - Chen, B. T., Yordanov, A. T., & Johnson, G. A. (2004). Functional pulmonary MR microscopy in mice. Faseb Journal, 18(5), A785–A785.
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  - Yelbuz, T. M., Zhang, X., Choma, M. A., Stadt, H. A., Zdanowicz, M., Johnson, G. A., & Kirby, M. L. (2003). Images in cardiovascular medicine. Approaching cardiac development in three dimensions by magnetic resonance microscopy.. Circulation, 108(22), e154–e155. https://doi.org/10.1161/01.CIR.0000102940.17908.CA
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  - Yelbuz, T. M., Waldo, K. L., Zhang, X., Zdanowicz, M., Parker, J., Creazzo, T. L., … Kirby, M. L. (2003). Myocardial volume and organization are changed by failure of addition of secondary heart field myocardium to the cardiac outflow tract.. Dev Dyn, 228(2), 152–160. https://doi.org/10.1002/dvdy.10364
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  - Gupta, A. K., Nelson, R. C., Johnson, G. A., Paulson, E. K., Delong, D. M., & Yoshizumi, T. T. (2003). Optimization of eight-element multi-detector row helical CT technology for evaluation of the abdomen.. Radiology, 227(3), 739–745. https://doi.org/10.1148/radiol.2273020591
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  - Zhang, X., Yelbuz, T. M., Cofer, G. P., Choma, M. A., Kirby, M. L., & Johnson, G. A. (2003). Improved preparation of chick embryonic samples for magnetic resonance microscopy.. Magn Reson Med, 49(6), 1192–1195. https://doi.org/10.1002/mrm.10460
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  - Chen, B. T., Brau, A. C. S., & Johnson, G. A. (2003). Measurement of regional lung function in rats using hyperpolarized 3helium dynamic MRI.. Magn Reson Med, 49(1), 78–88. https://doi.org/10.1002/mrm.10336
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  - Johnson, G. A., Cofer, G. P., Fubara, B., Gewalt, S. L., Hedlund, L. W., & Maronpot, R. R. (2002). Magnetic resonance histology for morphologic phenotyping.. J Magn Reson Imaging, 16(4), 423–429. https://doi.org/10.1002/jmri.10175
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  - Burg, K. J. L., Delnomdedieu, M., Beiler, R. J., Culberson, C. R., Greene, K. G., Halberstadt, C. R., … Johnson, G. A. (2002). Application of magnetic resonance microscopy to tissue engineering: a polylactide model.. J Biomed Mater Res, 61(3), 380–390. https://doi.org/10.1002/jbm.10146
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  - Gareau, P. J., Wymore, A. C., Cofer, G. P., & Johnson, G. A. (2002). Imaging inflammation: direct visualization of perivascular cuffing in EAE by magnetic resonance microscopy.. J Magn Reson Imaging, 16(1), 28–36. https://doi.org/10.1002/jmri.10136
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  - Möller, H. E., Chen, X. J., Saam, B., Hagspiel, K. D., Johnson, G. A., Altes, T. A., … Kauczor, H.-U. (2002). MRI of the lungs using hyperpolarized noble gases.. Magn Reson Med, 47(6), 1029–1051. https://doi.org/10.1002/mrm.10173
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  - Johnson, G. A., & Hedlund, L. W. (2002). Image based phenotyping: The visible mouse. Faseb Journal, 16(5), A1091–A1091.
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  - Johnson, G. A., Cofer, G. P., Gewalt, S. L., & Hedlund, L. W. (2002). Morphologic phenotyping with MR microscopy: the visible mouse.. Radiology, 222(3), 789–793. https://doi.org/10.1148/radiol.2223010531
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  - Brau, A. C. S., Wheeler, C. T., Hedlund, L. W., & Johnson, G. A. (2002). Fiber-optic stethoscope: a cardiac monitoring and gating system for magnetic resonance microscopy.. Magn Reson Med, 47(2), 314–321. https://doi.org/10.1002/mrm.10049
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  - Gupta, A. K., Johnson, G. A., & Nelson, R. C. (2002). Optimization of eight-element multi-detector helical CT for imaging the abdomen. Radiology, 222(2), 589–589.
  - Hedlund, L. W., & Johnson, G. A. (2002). Mechanical ventilation for imaging the small animal lung.. Ilar J, 43(3), 159–174. https://doi.org/10.1093/ilar.43.3.159
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  - Spielmann, A. L., Nelson, R. C., Lowry, C. R., Johnson, G. A., Sundaramoothy, G., Sheafor, D. H., & Paulson, E. K. (2002). Liver: single breath-hold dynamic subtraction CT with multi-detector row helical technology feasibility study.. Radiology, 222(1), 278–283. https://doi.org/10.1148/radiol.2221010190
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  - Frush, D. P., Yoshizumi, T. T., Paulson, E. K., & Johnson, G. A. (2001). Radiation dose from helical CT in children: Comparison of multi-slice and single-slice protocols. Radiology, 221, 246–246.
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  - Paulson, E. K., Yoshizumi, T. T., Frush, D. P., & Johnson, G. A. (2001). Multi-detector vs single-detector CT: The organ doses are higher than you think. Radiology, 221, 403–403.
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  - Tengowski, M. W., Suddarth, S. A., Cofer, G. P., Wheeler, C. T., Botts, S., Fasulo, L. M., … Johnson, G. A. (2001). Using technology to develop a hepatic lipidosis blomarker in the rat. Molecular Biology of the Cell, 12, 261A-261A.
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  - Kelly, S. J., Delnomdedieu, M., Oliverio, M. I., Williams, L. D., Saifer, M. G., Sherman, M. R., … Hershfield, M. S. (2001). Diabetes insipidus in uricase-deficient mice: a model for evaluating therapy with poly(ethylene glycol)-modified uricase.. J Am Soc Nephrol, 12(5), 1001–1009.
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  - Johnson, G. A., Cofer, G. P., Hedlund, L. W., Maronpot, R. R., & Suddarth, S. A. (2001). Registered (1)H and (3)He magnetic resonance microscopy of the lung.. Magn Reson Med, 45(3), 365–370. https://doi.org/10.1002/1522-2594(200103)45:3<365::aid-mrm1047>3.0.co;2-0
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  - Möller, H. E., Hedlund, L. W., Chen, X. J., Carey, M. R., Chawla, M. S., Wheeler, C. T., & Johnson, G. A. (2001). Measurements of hyperpolarized gas properties in the lung. Part III: (3)He T(1).. Magn Reson Med, 45(3), 421–430. https://doi.org/10.1002/1522-2594(200103)45:3<421::aid-mrm1055>3.0.co;2-k
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  - Tengowski, M. W., Hedlund, L. W., Guyot, D. J., Burkhardt, J. E., & Johnson, G. A. (2000). Magnetic resonance microscopy predicts findings in a theophylline-induced rat model of reproductive toxicity. Molecular Biology of the Cell, 11, 125A-125A.
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  - Chen, X. J., Hedlund, L. W., Möller, H. E., Chawla, M. S., Maronpot, R. R., & Johnson, G. A. (2000). Detection of emphysema in rat lungs by using magnetic resonance measurements of 3He diffusion.. Proc Natl Acad Sci U S A, 97(21), 11478–11481. https://doi.org/10.1073/pnas.97.21.11478
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  - Hedlund, L. W., Cofer, G. P., Owen, S. J., & Allan Johnson, G. (2000). MR-compatible ventilator for small animals: computer-controlled ventilation for proton and noble gas imaging.. Magn Reson Imaging, 18(6), 753–759. https://doi.org/10.1016/s0730-725x(00)00154-5
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  - Benveniste, H., Kim, K., Zhang, L., & Johnson, G. A. (2000). Magnetic resonance microscopy of the C57BL mouse brain.. Neuroimage, 11(6 Pt 1), 601–611. https://doi.org/10.1006/nimg.2000.0567
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  - Hedlund, L. W., Möller, H. E., Chen, X. J., Chawla, M. S., Cofer, G. P., & Johnson, G. A. (2000). Mixing oxygen with hyperpolarized (3)He for small-animal lung studies.. Nmr Biomed, 13(4), 202–206. https://doi.org/10.1002/1099-1492(200006)13:4<202::aid-nbm645>3.0.co;2-j
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  - Chawla, M. S., Chen, X. J., Cofer, G. P., Hedlund, L. W., Kerby, M. B., Ottoboni, T. B., & Johnson, G. A. (2000). Hyperpolarized 3He microspheres as a novel vascular signal source for MRI.. Magn Reson Med, 43(3), 440–445. https://doi.org/10.1002/(sici)1522-2594(200003)43:3<440::aid-mrm16>3.0.co;2-m
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  - Nugent, A. C., & Johnson, G. A. (2000). T1rho imaging using magnetization-prepared projection encoding (MaPPE).. Magn Reson Med, 43(3), 421–428. https://doi.org/10.1002/(sici)1522-2594(200003)43:3<421::aid-mrm14>3.0.co;2-x
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  - Lester, D. S., Pine, P. S., Delnomdedieu, M., Johannessen, J. N., & Johnson, G. A. (2000). Virtual neuropathology: three-dimensional visualization of lesions due to toxic insult.. Toxicol Pathol, 28(1), 100–104. https://doi.org/10.1177/019262330002800112
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  - Oliverio, M. I., Delnomdedieu, M., Best, C. F., Li, P., Morris, M., Callahan, M. F., … Coffman, T. M. (2000). Abnormal water metabolism in mice lacking the type 1A receptor for ANG II.. Am J Physiol Renal Physiol, 278(1), F75–F82. https://doi.org/10.1152/ajprenal.2000.278.1.F75
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  - Oliverio, M. I., Delnomdedieu, M., Best, C. F., Li, P., Morris, M., Callahan, M. F., … Coffman, T. M. (2000). Abnormal water metabolism in mice lacking the type 1A receptor for ANG II. American Journal of Physiology Renal Physiology, 278(1 47-1).
  - Lester, D. S., Johannessen, J. N., Pine, P. S., McGregor, G. N., & Johnson, G. A. (1999). Virtual neuropathology: A new approach to preclinical pathology using magnetic resonance imaging microscopy. Spectroscopy (Santa Monica), 14(7), 17–22.
  - Benveniste, H., Einstein, G., Kim, K. R., Hulette, C., & Johnson, G. A. (1999). Detection of neuritic plaques in Alzheimer's disease by magnetic resonance microscopy.. Proc Natl Acad Sci U S A, 96(24), 14079–14084. https://doi.org/10.1073/pnas.96.24.14079
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  - Nelson, R. C., Johnson, G. A., Spielman, A. L., Lowry, C. R., Sundaramoorthy, G., & Sheafor, D. H. (1999). Single breath-hold dynamic subtraction CT of the liver using-multidetector helical technology. Radiology, 213P, 125–125.
  - Chen, X. J., Möller, H. E., Chawla, M. S., Cofer, G. P., Driehuys, B., Hedlund, L. W., & Johnson, G. A. (1999). Spatially resolved measurements of hyperpolarized gas properties in the lung in vivo. Part I: diffusion coefficient.. Magn Reson Med, 42(4), 721–728. https://doi.org/10.1002/(sici)1522-2594(199910)42:4<721::aid-mrm14>3.0.co;2-d
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  - Chen, X. J., Möller, H. E., Chawla, M. S., Cofer, G. P., Driehuys, B., Hedlund, L. W., … Johnson, G. A. (1999). Spatially resolved measurements of hyperpolarized gas properties in the lung in vivo. Part II: T *(2).. Magn Reson Med, 42(4), 729–737. https://doi.org/10.1002/(sici)1522-2594(199910)42:4<729::aid-mrm15>3.0.co;2-2
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  - Benveniste, H. D., Kim, K. R., Hedlund, L. W., Johnson, G. A., & Friedman, A. H. (1999). Cerebral hemorrhage and edema following brain biopsy in rats: Significance of mean arterial blood pressure. Anesthesiology, 91(3A), U371–U371.
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  - Benveniste, H., Qui, H., Hedlund, L. W., Hüttemeier, P. C., Steele, S. M., & Johnson, G. A. (1999). In vivo diffusion-weighted magnetic resonance microscopy of rat spinal cord: effect of ischemia and intrathecal hyperbaric 5% lidocaine.. Reg Anesth Pain Med, 24(4), 311–318. https://doi.org/10.1016/s1098-7339(99)90104-9
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  - Hurlston, S. E., Brey, W. W., Suddarth, S. A., & Johnson, G. A. (1999). A high-temperature superconducting Helmholtz probe for microscopy at 9.4 T.. Magn Reson Med, 41(5), 1032–1038. https://doi.org/10.1002/(sici)1522-2594(199905)41:5<1032::aid-mrm23>3.0.co;2-x
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  - Möller, H. E., Chawla, M. S., Chen, X. J., Driehuys, B., Hedlund, L. W., Wheeler, C. T., & Johnson, G. A. (1999). Magnetic resonance angiography with hyperpolarized 129Xe dissolved in a lipid emulsion.. Magn Reson Med, 41(5), 1058–1064. https://doi.org/10.1002/(sici)1522-2594(199905)41:5<1058::aid-mrm26>3.0.co;2-c
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  - Möller, H. E., Chen, X. J., Chawla, M. S., Cofer, G. P., Driehuys, B., Hedlund, L. W., … Johnson, G. A. (1999). Sensitivity and resolution in 3D NMR microscopy of the lung with hyperpolarized noble gases.. Magn Reson Med, 41(4), 800–808. https://doi.org/10.1002/(sici)1522-2594(199904)41:4<800::aid-mrm20>3.0.co;2-k
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  - Viallon, M., Cofer, G. P., Suddarth, S. A., Möller, H. E., Chen, X. J., Chawla, M. S., … Johnson, G. A. (1999). Functional MR microscopy of the lung using hyperpolarized 3He.. Magn Reson Med, 41(4), 787–792. https://doi.org/10.1002/(sici)1522-2594(199904)41:4<787::aid-mrm18>3.0.co;2-4
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  - Lester, D. S., Lyon, R. C., McGregor, G. N., Engelhardt, R. T., Schmued, L. C., Johnson, G. A., & Johannessen, J. N. (1999). 3-Dimensional visualization of lesions in rat brain using magnetic resonance imaging microscopy.. Neuroreport, 10(4), 737–741. https://doi.org/10.1097/00001756-199903170-00014
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  - Miller, J. R., Hurlston, S. E., Ma, Q. Y., Face, D. W., Kountz, D. J., MacFall, J. R., … Johnson, G. A. (1999). Performance of a high-temperature superconducting probe for in vivo microscopy at 2.0 T.. Magn Reson Med, 41(1), 72–79. https://doi.org/10.1002/(sici)1522-2594(199901)41:1<72::aid-mrm11>3.0.co;2-a
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  - Smith, B. R., Huff, D. S., & Johnson, G. A. (1999). Magnetic resonance imaging of embryos: an Internet resource for the study of embryonic development.. Comput Med Imaging Graph, 23(1), 33–40. https://doi.org/10.1016/s0895-6111(98)00061-5
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  - Allan Johnson, G., Hedlund, L., & MacFall, J. (1998). A new window into the lung. Physics World, 11(11), 35–38.
  - Benveniste, H., Einstein, G., Kim, K. R., & Allan Johnson, G. (1998). Magnetic resonance microscopy of Alzheimer's disease: Senile plaques - A whiter shade of pale?. Neuroimage, 7(4 PART II).
  - Levron, D., Walter, D. K., Appelt, S., Fitzgerald, R. J., Kahn, D., Korbly, S. E., … Johnson, G. A. (1998). Magnetic resonance imaging of hyperpolarized ¹²⁹Xe produced by spin exchange with diode-laser pumped Cs. Applied Physics Letters, 73(18), 2666–2668. https://doi.org/10.1063/1.122547
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  - Benveniste, H., Qui, H., Hedlund, L. W., D’Ercole, F., & Johnson, G. A. (1998). Spinal cord neural anatomy in rats examined by in vivo magnetic resonance microscopy.. Reg Anesth Pain Med, 23(6), 589–599. https://doi.org/10.1016/s1098-7339(98)90087-6
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  - Möller, H. E., Chen, X. J., Chawla, M. S., Driehuys, B., Hedlund, L. W., & Johnson, G. A. (1998). Signal dynamics in magnetic resonance imaging of the lung with hyperpolarized noble gases.. J Magn Reson, 135(1), 133–143. https://doi.org/10.1006/jmre.1998.1563
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  - Chawla, M. S., Chen, X. J., Möller, H. E., Cofer, G. P., Wheeler, C. T., Hedlund, L. W., & Johnson, G. A. (1998). In vivo magnetic resonance vascular imaging using laser-polarized 3He microbubbles.. Proc Natl Acad Sci U S A, 95(18), 10832–10835. https://doi.org/10.1073/pnas.95.18.10832
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  - Chen, X. J., Chawla, M. S., Cofer, G. P., Hedlund, L. W., Möller, H. E., & Johnson, G. A. (1998). Hyperpolarized 3He NMR lineshape measurements in the live guinea pig lung.. Magn Reson Med, 40(1), 61–65. https://doi.org/10.1002/mrm.1910400109
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  - Qiu, H. H., Hedlund, L. W., Neuman, M. R., Edwards, C. R., Black, R. D., Cofer, G. P., & Johnson, G. A. (1998). Measuring the progression of foreign-body reaction to silicone implants using in vivo MR microscopy.. Ieee Trans Biomed Eng, 45(7), 921–927. https://doi.org/10.1109/10.686800
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  - Smith, B. R., Sattuck, M. D., Hedlund, L. W., & Johnson, G. A. (1998). Time-course imaging of rat embryos in utero with magnetic resonance microscopy (vol 39, pg 673, 1998). Magnetic Resonance in Medicine, 39(6), CP2–CP2.
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  - Smith, B. R., Shattuck, M. D., Hedlund, L. W., & Johnson, G. A. (1998). Time-course imaging of rat embryos in utero with magnetic resonance microscopy.. Magn Reson Med, 39(4), 673–677. https://doi.org/10.1002/mrm.1910390424
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  - Delnomdedieu, M., Hedlund, L. W., Maronpot, R. R., & Johnson, G. A. (1998). Magnetic resonance microscopy and histopathology: comparative approach of bromobenzene-induced hepatotoxicity in the rat.. Hepatology, 27(2), 526–532. https://doi.org/10.1002/hep.510270229
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  - Chen, X. J., Chawla, M. S., Hedlund, L. W., Möller, H. E., MacFall, J. R., & Johnson, G. A. (1998). MR microscopy of lung airways with hyperpolarized 3He.. Magn Reson Med, 39(1), 79–84. https://doi.org/10.1002/mrm.1910390113
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  - Smith, B. R., Sattuck, M. D., Hedlund, L. W., & Johnson, G. A. (1998). Erratum: Time-course imaging of rat embryos in utero with magnetic resonance microscopy (Magnetic Resonance in Medicine (1998) 39 (673-677)). Magnetic Resonance in Medicine, 39(6).
  - Zhou, X., Liang, Z. P., Gewalt, S. L., Cofer, G. P., Lauterbur, P. C., & Johnson, G. A. (1998). A fast spin echo technique with circular sampling.. Magn Reson Med, 39(1), 23–27. https://doi.org/10.1002/mrm.1910390106
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  - Bcnveniste, H., Hüttemeier, P. C., Qiu, H., Steele, S., Hedlund, L. W., & Allan Johnson, G. (1997). Magnetic resonance imaging of continuous spinal anesthesia with hyperbaric lidocaine: Root or white matter lesion?. Regional Anesthesia, 22(2 SUPPL.).
  - Shattuck, M. D., Gewalt, S. L., Glover, G. H., Hedlund, L. W., & Johnson, G. A. (1997). MR microimaging of the lung using volume projection encoding.. Magn Reson Med, 38(6), 938–942. https://doi.org/10.1002/mrm.1910380613
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  - Qiu, H. H., Cofer, G. P., Hedlund, L. W., & Johnson, G. A. (1997). Automated feedback control of body temperature for small animal studies with MR microscopy.. Ieee Trans Biomed Eng, 44(11), 1107–1113. https://doi.org/10.1109/10.641338
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  - Johnson, G. A., Cates, G., Chen, X. J., Cofer, G. P., Driehuys, B., Happer, W., … Swartz, J. (1997). Dynamics of magnetization in hyperpolarized gas MRI of the lung.. Magn Reson Med, 38(1), 66–71. https://doi.org/10.1002/mrm.1910380111
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  - McFall, J. S., & Johnson, G. A. (1997). Root form and function meshed by MRI.. Plant Physiology, 114(3), 20002–20002.
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  - Johnson, G. A., Benveniste, H., Engelhardt, R. T., Qiu, H., & Hedlund, L. W. (1997). Magnetic resonance microscopy in basic studies of brain structure and function.. Ann N Y Acad Sci, 820, 139–147. https://doi.org/10.1111/j.1749-6632.1997.tb46193.x
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  - Vandemark, R. M., Fay, M. E., Porter, F. R., & Johnson, G. A. (1997). Digital image-intensifier radiography at a level I trauma center.. Ajr Am J Roentgenol, 168(4), 944–946. https://doi.org/10.2214/ajr.168.4.9124145
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  - Shattuck, M. D., Behringer, R. P., Johnson, G. A., & Georgiadis, J. G. (1997). Convection and flow in porous media. Part 1. Visualization by magnetic resonance imaging. Journal of Fluid Mechanics, 332, 215–245.
  - Chotas, H. G., Floyd, C. E., Johnson, G. A., & Ravin, C. E. (1997). Quality control phantom for digital chest radiography.. Radiology, 202(1), 111–116. https://doi.org/10.1148/radiology.202.1.8988199
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  - Hurlston, S. E., Cofer, G. P., & Johnson, G. A. (1997). Optimized radiofrequency coils for increased signal-to-noise ratio in magnetic resonance microscopy. International Journal of Imaging Systems and Technology, 8(3), 277–284. https://doi.org/10.1002/(SICI)1098-1098(1997)8:3<277::AID-IMA5>3.0.CO;2-7
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  - Zimmer, C., Wright, S. C., Engelhardt, R. T., Johnson, G. A., Kramm, C., Breakefield, X. O., & Weissleder, R. (1997). Tumor cell endocytosis imaging facilitates delineation of the glioma-brain interface.. Exp Neurol, 143(1), 61–69. https://doi.org/10.1006/exnr.1996.6350
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  - Chotas, H. G., Floyd, C. E., Johnson, G. A., & Ravin, C. E. (1996). Quality control phantom for digital chest radiography. Radiology, 201, 685–685.
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  - Johnson, G. A., & Hedlund, L. W. (1996). Functional imaging of the lung.. Nat Med, 2(11). https://doi.org/10.1038/nm1196-1192
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  - Smith, B. R., Linney, E., Huff, D. S., & Johnson, G. A. (1996). Magnetic resonance microscopy of embryos.. Comput Med Imaging Graph, 20(6), 483–490. https://doi.org/10.1016/s0895-6111(96)00046-8
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  - MacFall, J. R., Charles, H. C., Black, R. D., Middleton, H., Swartz, J. C., Saam, B., … Ravin, C. E. (1996). Human lung air spaces: potential for MR imaging with hyperpolarized He-3.. Radiology, 200(2), 553–558. https://doi.org/10.1148/radiology.200.2.8685356
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  - Black, R. D., Middleton, H. L., Cates, G. D., Cofer, G. P., Driehuys, B., Happer, W., … Swartz, J. C. (1996). In vivo He-3 MR images of guinea pig lungs.. Radiology, 199(3), 867–870. https://doi.org/10.1148/radiology.199.3.8638019
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  - Hall, W. L., Benveniste, H., Hedlund, L. W., & Johnson, G. A. (1996). A new in vivo method for quantitative analysis of stroke lesions using diffusion-weighted magnetic resonance microscopy.. Neuroimage, 3(3 Pt 1), 158–166. https://doi.org/10.1006/nimg.1996.0017
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  - Engelhardt, R. T., & Johnson, G. A. (1996). T1 rho relaxation and its application to MR histology.. Magn Reson Med, 35(5), 781–786. https://doi.org/10.1002/mrm.1910350520
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  - Delnomdedieu, M., Hedlund, L. W., Johnson, G. A., & Maronpot, R. R. (1996). Magnetic resonance microscopy--a new tool for the toxicologic pathologist.. Toxicol Pathol, 24(1), 36–44. https://doi.org/10.1177/019262339602400106
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  - Johnson, G., Thomson, D. J., Wu, E. X., & Williams, S. C. R. (1996). Multiple-window spectrum estimation applied to in vivo NMR spectroscopy. Journal of Magnetic Resonance Series B, 110(2), 138–149.
  - Zhou, X., Maronpot, R. R., Hedlund, L. W., Cofer, G. P., & Johnson, G. A. (1995). Detection of bromobenzene-induced hepatocellular necrosis using magnetic resonance microscopy.. Magn Reson Med, 34(6), 853–857. https://doi.org/10.1002/mrm.1910340610
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  - MACFALL, I. S., & JOHNSON, G. A. (1995). 3-DIMENSIONAL ROOT-GROWTH, TURNOVER AND TRANSPORT AS SEEN WITH MAGNETIC-RESONANCE MICROSCOPY. Plant Physiology, 108(2), 31–31.
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  - Summers, R. M., Hedlund, L. W., Cofer, G. P., Gottsman, M. B., Manibo, J. F., & Johnson, G. A. (1995). MR microscopy of the rat carotid artery after balloon injury by using an implanted imaging coil.. Magn Reson Med, 33(6), 785–789. https://doi.org/10.1002/mrm.1910330607
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  - Middleton, H., Black, R. D., Saam, B., Cates, G. D., Cofer, G. P., Guenther, R., … Juvan, K. (1995). MR imaging with hyperpolarized 3He gas.. Magn Reson Med, 33(2), 271–275. https://doi.org/10.1002/mrm.1910330219
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  - Black, R. D., Early, T. A., & Johnson, G. A. (1995). Performance of a High-Temperature Superconducting Resonator for High-Field Imaging. Journal of Magnetic Resonance, Series A, 113(1), 74–80. https://doi.org/10.1006/jmra.1995.1058
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  - Arnder, L., Zhou, X., Cofer, G. P., Hedlund, L. W., & Johnson, G. A. (1994). Magnetic resonance microscopy of the rat carotid artery at 300 megahertz.. Invest Radiol, 29(9), 822–826. https://doi.org/10.1097/00004424-199409000-00004
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  - Mellin, A. F., Cofer, G. P., Smith, B. R., Suddarth, S. A., Hedlund, L. W., & Johnson, G. A. (1994). Three dimensional magnetic resonance microangiography of rat neurovasculature.. Magnetic Resonance in Medicine, 32(2), 199–205. https://doi.org/10.1002/mrm.1910320208
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  - Mellin, A. F., Cofer, G. P., Smith, B. R., Suddarth, S. A., Hedlund, L. W., & Johnson, G. A. (1994). Three dimensional magnetic resonance microangiography of rat neurovasculature.. Magn Reson Med, 32(2), 199–205. https://doi.org/10.1002/mrm.1910320208
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  - Zhou, X., Maronpot, R. R., Cofer, G. P., Hedlund, L. W., & Johnson, G. A. (1994). Studies on bromobenzene-induced hepatotoxicity using in vivo MR microscopy with surgically implanted RF coils.. Magn Reson Med, 31(6), 619–627. https://doi.org/10.1002/mrm.1910310607
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  - Henson, M. M., Henson, O. W., Gewalt, S. L., Wilson, J. L., & Johnson, G. A. (1994). Imaging the cochlea by magnetic resonance microscopy.. Hear Res, 75(1–2), 75–80. https://doi.org/10.1016/0378-5955(94)90058-2
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  - Hsu, J. C., Johnson, G. A., Smith, W. M., Reimer, K. A., & Ideker, R. E. (1994). Magnetic resonance imaging of chronic myocardial infarcts in formalin-fixed human autopsy hearts.. Circulation, 89(5), 2133–2140. https://doi.org/10.1161/01.cir.89.5.2133
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  - Smith, B. R., Johnson, G. A., Groman, E. V., & Linney, E. (1994). Magnetic resonance microscopy of mouse embryos.. Proc Natl Acad Sci U S A, 91(9), 3530–3533. https://doi.org/10.1073/pnas.91.9.3530
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  - Boyko, O. B., Alston, S. R., Fuller, G. N., Hulette, C. M., Johnson, G. A., & Burger, P. C. (1994). Utility of postmortem magnetic resonance imaging in clinical neuropathology.. Arch Pathol Lab Med, 118(3), 219–225.
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  - MacFall, J. S., & Johnson, G. A. (1994). The architecture of plant vasculature and transport as seen with magnetic resonance microscopy. Canadian Journal of Botany, 72(11), 1561–1573. https://doi.org/10.1139/b94-193
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  - Smith, W. M., Hsu, J. C. M., Johnson, G. A., Reimer, K. A., & Ideker, R. E. (1993). Detection of infarcted tissue the heart by magnetic resonance imaging. Proceedings of the Annual Conference on Engineering in Medicine and Biology, 15(pt 1), 485–486.
  - Zhou, X., Liang, Z. P., Cofer, G. P., Beaulieu, C. F., Suddarth, S. A., & Johnson, G. A. (1993). Reduction of ringing and blurring artifacts in fast spin-echo imaging.. J Magn Reson Imaging, 3(5), 803–807. https://doi.org/10.1002/jmri.1880030518
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  - Beaulieu, C. F., Zhou, X., Cofer, G. P., & Johnson, G. A. (1993). Diffusion-weighted MR microscopy with fast spin-echo.. Magn Reson Med, 30(2), 201–206. https://doi.org/10.1002/mrm.1910300208
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  - Zhou, X., Cofer, G. P., Suddarth, S. A., & Johnson, G. A. (1993). High-field MR microscopy using fast spin-echoes.. Magn Reson Med, 30(1), 60–67. https://doi.org/10.1002/mrm.1910300110
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  - Johnson, G. A., Benveniste, H., Black, R. D., Hedlund, L. W., Maronpot, R. R., & Smith, B. R. (1993). Histology by magnetic resonance microscopy.. Magn Reson Q, 9(1), 1–30.
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  - Black, R. D., Early, T. A., Roemer, P. B., Mueller, O. M., Mogro-Campero, A., Turner, L. G., & Johnson, G. A. (1993). A high-temperature superconducting receiver for nuclear magnetic resonance microscopy.. Science, 259(5096), 793–795. https://doi.org/10.1126/science.8430331
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  - Gewalt, S. L., Glover, G. H., Hedlund, L. W., Cofer, G. P., MacFall, J. R., & Johnson, G. A. (1993). MR microscopy of the rat lung using projection reconstruction.. Magn Reson Med, 29(1), 99–106. https://doi.org/10.1002/mrm.1910290117
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  - Huesgen, C. T., Burger, P. C., Crain, B. J., & Johnson, G. A. (1993). In vitro MR microscopy of the hippocampus in Alzheimer's disease.. Neurology, 43(1), 145–152. https://doi.org/10.1212/wnl.43.1_part_1.145
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  - VERES, J. S., COFER, G. P., & JOHNSON, G. A. (1993). Magnetic resonance imaging of leaves. New Phytologist, 123(4), 769–774. https://doi.org/10.1111/j.1469-8137.1993.tb03788.x
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  - Macfall, J. S., Pfeffer, P. E., Rolin, D. B., Macfall, J. R., & Johnson, G. A. (1992). Observation of the Oxygen Diffusion Barrier in Soybean (Glycine max) Nodules with Magnetic Resonance Microscopy.. Plant Physiol, 100(4), 1691–1697. https://doi.org/10.1104/pp.100.4.1691
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  - Brouwer, M., Engel, D. W., Bonaventura, J., & Johnson, G. A. (1992). In vivo magnetic resonance imaging of the blue crab, Callinectes sapidus: effect of cadmium accumulation in tissues on proton relaxation properties.. J Exp Zool, 263(1), 32–40. https://doi.org/10.1002/jez.1402630105
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  - Benveniste, H., Hedlund, L. W., & Johnson, G. A. (1992). Mechanism of detection of acute cerebral ischemia in rats by diffusion-weighted magnetic resonance microscopy.. Stroke, 23(5), 746–754. https://doi.org/10.1161/01.str.23.5.746
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  - Smith, B. R., Effmann, E. L., & Johnson, G. A. (1992). MR microscopy of chick embryo vasculature.. J Magn Reson Imaging, 2(2), 237–240. https://doi.org/10.1002/jmri.1880020220
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  - Banson, M. L., Cofer, G. P., Black, R., & Johnson, G. A. (1992). A probe for specimen magnetic resonance microscopy.. Invest Radiol, 27(2), 157–164. https://doi.org/10.1097/00004424-199202000-00013
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  - Banson, M. L., Cofer, G. P., Hedlund, L. W., & Johnson, G. A. (1992). Surface coil imaging of rat spine at 7.0 T.. Magn Reson Imaging, 10(6), 929–934. https://doi.org/10.1016/0730-725x(92)90447-8
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  - Shattuck, M., Behringer, R., Geordiadis, J., & Johnson, G. A. (1991). Magnetic resonance imaging of interstitial velocity distributions in porous media. American Society of Mechanical Engineers, Fluids Engineering Division (Publication) Fed, 125, 39–45.
  - Veres, J. S., Cofer, G. P., & Johnson, G. A. (1991). Distinguishing Plant Tissues with Magnetic Resonance Microscopy. American Journal of Botany, 78(12), 1704–1704. https://doi.org/10.2307/2444849
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  - Maki, J. H., Benveniste, H., MacFall, J. R., Piantadosi, C. A., & Johnson, G. A. (1991). MR imaging of microcirculation in rat brain: correlation with carbon dioxide-induced changes in blood flow.. J Magn Reson Imaging, 1(6), 673–681. https://doi.org/10.1002/jmri.1880010609
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  - Chotas, H. G., Van Metter, R. L., Johnson, G. A., & Ravin, C. E. (1991). Small object contrast in AMBER and conventional chest radiography.. Radiology, 180(3), 853–859. https://doi.org/10.1148/radiology.180.3.1871306
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  - MacFall, J. R., Maki, J. H., Johnson, G. A., Hedlund, L. W., & Cofer, G. P. (1991). Pre- and postmortem diffusion coefficients in rat neural and muscle tissues.. Magnetic Resonance in Medicine, 20(1), 89–99. https://doi.org/10.1002/mrm.1910200110
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  - MacFall, J. R., Maki, J. H., Johnson, G. A., Hedlund, L. W., & Cofer, G. P. (1991). Pre- and postmortem diffusion coefficients in rat neural and muscle tissues.. Magn Reson Med, 20(1), 89–99. https://doi.org/10.1002/mrm.1910200110
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  - Johnson, G. A., & Maki, J. H. (1991). In vivo measurement of proton diffusion in the presence of coherent motion.. Invest Radiol, 26(6), 540–545. https://doi.org/10.1097/00004424-199106000-00006
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  - MacFall, J. R., Maki, J. H., Johnson, G. A., Hedlund, L., Benveniste, H., & Copher, G. (1991). Diffusion/microcirculation MRI in the rat brain.. Magn Reson Med, 19(2), 305–310. https://doi.org/10.1002/mrm.1910190219
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  - Hedlund, L. W., Maronpot, R. R., Johnson, G. A., Cofer, G. P., Mills, G. I., & Wheeler, C. T. (1991). Magnetic resonance microscopy of toxic renal injury induced by bromoethylamine in rats.. Fundam Appl Toxicol, 16(4), 787–797. https://doi.org/10.1016/0272-0590(91)90164-y
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  - Malisch, T. W., Hedlund, L. W., Suddarth, S. A., & Johnson, G. A. (1991). MR microscopy at 7.0 T: effects of brain iron.. J Magn Reson Imaging, 1(3), 301–305. https://doi.org/10.1002/jmri.1880010308
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  - Suddarth, S. A., & Johnson, G. A. (1991). Three-dimensional MR microscopy with large arrays.. Magnetic Resonance in Medicine, 18(1), 132–141. https://doi.org/10.1002/mrm.1910180114
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  - Suddarth, S. A., & Johnson, G. A. (1991). Three-dimensional MR microscopy with large arrays.. Magn Reson Med, 18(1), 132–141. https://doi.org/10.1002/mrm.1910180114
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  - Benveniste, H., Cofer, G. P., Piantadosi, C. A., Davis, J. N., & Johnson, G. A. (1991). Quantitative proton magnetic resonance imaging in focal cerebral ischemia in rat brain.. Stroke, 22(2), 259–268. https://doi.org/10.1161/01.str.22.2.259
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  - BAXTER, G. W., LEONE, R., JOHNSON, G. A., & BEHRINGER, R. P. (1991). TIME-DEPENDENCE, SCALING AND PATTERN-FORMATION FOR FLOWING SAND. European Journal of Mechanics B Fluids, 10(2), 181–186.
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  - Hedlund, L. W., Maronpot, R. R., Johnson, G. A., Cofer, G. P., Mills, G. I., & Wheeler, C. T. (1991). Magnetic resonance microscopy of toxic renal injury induced by Bromoethylamine in rats. Toxicological Sciences, 16(4), 787–797. https://doi.org/10.1093/toxsci/16.4.787
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  - MACFALL, J. S., JOHNSON, G. A., & KRAMER, P. J. (1991). Comparative water uptake by roots of different ages in seedlings of loblolly pine (Pinus taeda L.). New Phytologist, 119(4), 551–560. https://doi.org/10.1111/j.1469-8137.1991.tb01047.x
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  - Maki, J. H., Benveniste, H., MacFall, J. R., & Johnson, G. A. (1991). Maximization of contrast-to-noise ratio to distinguish diffusion and microcirculatory flow.. J Magn Reson Imaging, 1(1), 39–46. https://doi.org/10.1002/jmri.1880010105
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  - Maki, J. H., MacFall, J. R., & Johnson, G. A. (1991). The use of gradient flow compensation to separate diffusion and microcirculatory flow in MRI.. Magn Reson Med, 17(1), 95–107. https://doi.org/10.1002/mrm.1910170114
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  - Shattuck, M., Behringer, R., Geordiadis, J., & Johnson, G. A. (1991). Magnetic resonance imaging of interstitial velocity distributions in porous media.
  - Shattuck, M., Behringer, R., Geordiadis, J., & Johnson, G. A. (1991). Magnetic resonance imaging of interstitial velocity distributions in porous media.
  - Veres, J. S., Johnson, G. A., & Kramer, P. J. (1991). In vivo Magnetic Resonance Imaging of Blechnum Ferns: Changes in T1 and N (H) During Dehydration and Rehydration. American Journal of Botany, 78(1), 80–80. https://doi.org/10.2307/2445231
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  - Brown, J. M., Kramer, P. J., Cofer, G. P., & Johnson, G. A. (1990). Use of nuclear magnetic resonance microscopy for noninvasive observations of root-soil water relations. Theoretical and Applied Climatology, 42(4), 229–236. https://doi.org/10.1007/BF00865983
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  - Cassel, D. K., Brown, J. M., & Johnson, G. A. (1990). Computer tomographic analysis of water distribution and flow in porous media. Theoretical and Applied Climatology, 42(4), 223–228. https://doi.org/10.1007/BF00865982
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  - MacFall, J. R., Benveniste, H., Maki, J., Johnson, G. A., Hedlund, L., & Copher, G. (1990). MR diffusion measurements in stroke models in rat brains. Proceedings of the Annual Conference on Engineering in Medicine and Biology, (pt 1), 67–68.
  - Farmer, T. H., Cofer, G. P., & Johnson, G. A. (1990). Maximizing contrast to noise with inductively coupled implanted coils.. Invest Radiol, 25(5), 552–558. https://doi.org/10.1097/00004424-199005000-00013
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  - MacFall, J. S., Johnson, G. A., & Kramer, P. J. (1990). Observation of a water-depletion region surrounding loblolly pine roots by magnetic resonance imaging.. Proc Natl Acad Sci U S A, 87(3), 1203–1207. https://doi.org/10.1073/pnas.87.3.1203
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  - Johnson, G. A., Chotas, H. G., Suddarth, S. A., Ziv, S. B., & Todd, B. E. (1990). Integrated network for medical imaging research. Proceedings of Spie the International Society for Optical Engineering, 1234 pt 1, 159–166.
  - Stern, R. L., Johnson, G. A., & Ravin, C. E. (1990). Magnetic resonance imaging of the thoracic cavity using a paused 3DFT acquisition technique.. Magn Reson Imaging, 8(6), 747–753. https://doi.org/10.1016/0730-725x(90)90010-y
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  - Johnson, G. A., & Maronpont, R. R. (1989). Magnetic resonance microscopy of chemically-induced liver foci. Toxicologic Pathology, 17(4 I), 613–616.
  - Sherrier, R. H., Chotas, H. G., Johnson, G. A., Chiles, C., & Ravin, C. E. (1989). Image optimization in a computed-radiography/photostimulable-phosphor system.. J Digit Imaging, 2(4), 212–219. https://doi.org/10.1007/bf03170408
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  - Dockery, S. E., Suddarth, S. A., & Johnson, G. A. (1989). Relaxation measurements at 300 MHz using MR microscopy.. Magn Reson Med, 11(2), 182–192. https://doi.org/10.1002/mrm.1910110206
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  - Johnson, G. A., Thompson, M. B., Cofer, G. P., Campen, D., & Maronpot, R. R. (1989). Magnetic resonance imaging of hepatic neoplasms in the rat.. Vet Pathol, 26(4), 303–308. https://doi.org/10.1177/030098588902600403
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  - Baxter, G. W., Behringer, R. P., Fagert, T., & Johnson, G. A. (1989). Pattern formation in flowing sand.. Phys Rev Lett, 62(24), 2825–2828. https://doi.org/10.1103/PhysRevLett.62.2825
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  - Farmer, T. H., Johnson, G. A., Cofer, G. P., Maronpot, R. R., Dixon, D., & Hedlund, L. W. (1989). Implanted coil MR microscopy of renal pathology.. Magn Reson Med, 10(3), 310–323. https://doi.org/10.1002/mrm.1910100304
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  - Stern, R. L., Cline, H. E., Johnson, G. A., & Ravin, C. E. (1989). Three-dimensional imaging of the thoracic cavity.. Investigative Radiology, 24(4), 282–288.
  - Stern, R. L., Cline, H. E., Johnson, G. A., & Ravin, C. E. (1989). Three-dimensional imaging of the thoracic cavity.. Invest Radiol, 24(4), 282–288. https://doi.org/10.1097/00004424-198904000-00005
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  - Cline, H. E., Lorensen, W. E., Herfkens, R. J., Johnson, G. A., & Glover, G. H. (1989). Vascular morphology by three-dimensional magnetic resonance imaging.. Magn Reson Imaging, 7(1), 45–54. https://doi.org/10.1016/0730-725x(89)90323-8
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  - Cofer, G. P., Brown, J. M., & Allan Johnson, G. (1989). In vivo magnetic resonance microscopy at 5 μm. Journal of Magnetic Resonance (1969), 83(3), 608–616. https://doi.org/10.1016/0022-2364(89)90354-5
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  - Johnson, G. A., & Maronpot, R. R. (1989). Magnetic resonance microscopy of chemically-induced liver foci.. Toxicol Pathol, 17(4 Pt 1), 613–616. https://doi.org/10.1177/0192623389017004106
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  - Matyac, C. A., Cofer, G. P., Bailey, J. E., & Johnson, G. A. (1989). In Situ Observations of Root-gall Formation Using Nuclear Magnetic Resonance Imaging.. J Nematol, 21(1), 131–134.
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  - Maynor, C. H., Charles, H. C., Herfkens, R. J., Suddarth, S. A., & Johnson, G. A. (1989). Chemical shift imaging of atherosclerosis at 7.0 Tesla.. Invest Radiol, 24(1), 52–60. https://doi.org/10.1097/00004424-198901000-00012
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  - Brown, J. M., Thomas, J. F., Cofer, G. P., & Johnson, G. A. (1988). Magnetic Resonance Microscopy of Stem Tissues of Pelargonium hortorum. Botanical Gazette, 149(3), 253–259. https://doi.org/10.1086/337713
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  - DOCKERY, S., SUDDARTH, S. A., COFER, G. P., & JOHNSON, G. A. (1988). THE IMPACT OF INCREASED SPIN-LATTICE RELAXATION-TIME MICROSCOPY AT 7.0T. Investigative Radiology, 23(9), S20–S20.
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  - FARMER, T. H. R., JOHNSON, G. A., COFER, G. P., MARONPOT, R. R., & HEDLUND, L. W. (1988). MR MICROSCOPY OF NEPHROTOXIC ACUTE TUBULAR-NECROSIS IN THE RAT. Investigative Radiology, 23(9), S10–S10.
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  - MAKI, J. H., COFER, G. P., HEDLUND, L. W., MACFALL, J. R., & JOHNSON, G. A. (1988). MR MICROSCOPY USING DRIVEN EQUILIBRIUM (DEFT). Investigative Radiology, 23(9), S21–S21.
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  - MAYNOR, C. H., CHARLES, H. C., HERFKENS, R. J., SUDDARTH, S. A., & JOHNSON, G. A. (1988). INVITRO CHEMICAL-SHIFT IMAGING OF ATHEROSCLEROSIS AT 7.0-TESLA. Investigative Radiology, 23(9), S3–S3.
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  - STERN, R. L., CLINE, H. E., JOHNSON, G. A., & RAVIN, C. E. (1988). DEVELOPMENT OF A 3D RECONSTRUCTED-IMAGE SURGICAL PLANNING STATION. Investigative Radiology, 23(9), S60–S60.
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  - Sherrier, R. H., Suddarth, S. A., & Johnson, G. A. (1988). Film-Based Digital Tomosynthesis Of The Chest. Optical Engineering, 27(8). https://doi.org/10.1117/12.7976742
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  - Effmann, E. L., Johnson, G. A., Smith, B. R., Talbott, G. A., & Cofer, G. (1988). Magnetic resonance microscopy of chick embryos in ovo.. Teratology, 38(1), 59–65. https://doi.org/10.1002/tera.1420380109
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  - Spritzer, C. E., Vogler, J. B., Martinez, S., Garrett, W. E., Johnson, G. A., McNamara, M. J., … Herfkens, R. J. (1988). MR imaging of the knee: preliminary results with a 3DFT GRASS pulse sequence.. Ajr Am J Roentgenol, 150(3), 597–603. https://doi.org/10.2214/ajr.150.3.597
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  - Sherrier, R. H., Chiles, C., Wilkinson, W. E., Johnson, G. A., & Ravin, C. E. (1988). Effects of image processing on nodule detection rates in digitized chest radiographs: ROC study of observer performance.. Radiology, 166(2), 447–450. https://doi.org/10.1148/radiology.166.2.3336719
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  - Conner, W. E., Johnson, G. A., Cofer, G. P., & Dittrich, K. (1988). Magnetic resonance microscopy: in vivo sectioning of a developing insect.. Experientia, 44(1), 11–12. https://doi.org/10.1007/bf01960223
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  - Dixon, D., Johnson, G. A., Cofer, G. P., Hedlund, L. W., & Maronpot, R. R. (1988). Magnetic resonance imaging (MRI): a new tool in experimental toxicologic pathology.. Toxicol Pathol, 16(3), 386–391. https://doi.org/10.1177/019262338801600311
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  - Dixon, D., Johnson, G. A., Cofer, G. P., Hedlund, L. W., & Maronpot, R. R. (1988). Magnetic resonance imaging (MRI): A new tool in experimental toxicologic pathology. Toxicologic Pathology, 16(3), 387–391.
  - Maki, J. H., Johnson, G. A., Cofer, G. P., & MacFall, J. R. (1988). SNR improvement in NMR microscopy using DEFT. Journal of Magnetic Resonance (1969), 80(3), 482–492. https://doi.org/10.1016/0022-2364(88)90243-0
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  - Hollett, M. D., Cofer, G. P., & Johnson, G. A. (1987). In situ magnetic resonance microscopy.. Invest Radiol, 22(12), 965–968. https://doi.org/10.1097/00004424-198712000-00009
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  - BROWN, J. M., KRAMER, P. J., COFER, G. P., & JOHNSON, G. A. (1987). MAGNETIC-RESONANCE-IMAGING OF ROOT-WATER DISTRIBUTION. Hortscience, 22(5), 1087–1087.
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  - Drayer, B. P., Burger, P., Hurwitz, B., Dawson, D., Cain, J., Leong, J., … Johnson, G. A. (1987). Magnetic resonance imaging in multiple sclerosis: decreased signal in thalamus and putamen.. Ann Neurol, 22(4), 546–550. https://doi.org/10.1002/ana.410220418
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  - Hedlund, L., Cofer, G., Suddarth, S., & Johnson, G. A. (1987). 177. SMALL ANIMAL ANESTHESIA AND MONITORING DURING EXTENDED MR MICROSCOPY. Investigative Radiology, 22(9), S44–S44. https://doi.org/10.1097/00004424-198709000-00193
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  - McAdams, H. P., Johnson, G. A., Suddarth, S. A., Sherrier, R. H., & Ravin, C. E. (1987). IMPLEMENTATION OF ADAPTIVE FILTRATION FOR DIGITAL CHEST IMAGING.. Optical Engineering, 26(7), 669–674.
  - JOHNSON, G. A. (1987). RESOLUTION LIMITS IN MR - MR MICROSCOPY. Medical Physics, 14(3), 499–499.
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  - Johnson, G. A., Brown, J., & Kramer, P. J. (1987). Magnetic resonance microscopy of changes in water content in stems of transpiring plants.. Proc Natl Acad Sci U S A, 84(9), 2752–2755. https://doi.org/10.1073/pnas.84.9.2752
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  - EFFMANN, E. L., JOHNSON, G. A., SMITH, B. R., TALBOTT, G. A., & COFER, G. (1987). MAGNETIC-RESONANCE MICROSCOPY OF LIVE CHICK-EMBRYOS IN OVO. Teratology, 35(2), A44–A44.
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  - Johnson, G. A., Thompson, M. B., & Drayer, B. P. (1987). Three-dimensional MRI microscopy of the normal rat brain.. Magnetic Resonance in Medicine, 4(4), 351–365. https://doi.org/10.1002/mrm.1910040406
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  - Sherrier, R. H., Chiles, C., Johnson, G. A., & Ravin, C. E. (1987). Differentiation of benign from malignant pulmonary nodules with digitized chest radiographs.. Radiology, 162(3), 645–649. https://doi.org/10.1148/radiology.162.3.3809476
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  - Suddarth, S. A., Johnson, G. A., Sherrier, R. H., & Ravin, C. E. (1987). Performance of high-resolution monitors for digital chest imaging.. Med Phys, 14(2), 253–257. https://doi.org/10.1118/1.596079
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  - Utz, J. A., Herfkens, R. J., Johnson, C. D., Shimakawa, A., Pelc, N., Glover, G., … Spritzer, C. E. (1987). Two-second MR images: comparison with spin-echo images in 29 patients.. Ajr Am J Roentgenol, 148(3), 629–633. https://doi.org/10.2214/ajr.148.3.629
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  - Stude, R. A., Hedlund, L. W., Johnson, G. A., & Thompson, W. M. (1987). Contrast enhancement of the liver. Evaluation by automated contiguous pixel search.. Invest Radiol, 22(2), 132–136. https://doi.org/10.1097/00004424-198702000-00008
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  - Brown, J. M., Fonteno, W. C., Cassel, D. K., & Johnson, G. A. (1987). COMPUTED TOMOGRAPHIC ANALYSES OF WATER DISTRIBUTION IN THREE POROUS FOAM MEDIA.. Soil Science Society of America Journal, 51(5), 1121–1125. https://doi.org/10.2136/sssaj1987.03615995005100050005x
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  - Fram, E. K., Herfkens, R. J., Johnson, G. A., Glover, G. H., Karis, J. P., Shimakawa, A., … Pelc, N. J. (1987). Rapid calculation of T1 using variable flip angle gradient refocused imaging.. Magn Reson Imaging, 5(3), 201–208. https://doi.org/10.1016/0730-725x(87)90021-x
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  - Karis, J. P., Allan Johnson, G., & Glover, G. H. (1987). Signal-to-noise improvements in three-dimensional NMR microscopy using limited-angle excitation. Journal of Magnetic Resonance (1969), 71(1), 24–33. https://doi.org/10.1016/0022-2364(87)90124-7
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  - MacFall, J. R., Wehrli, F. W., Breger, R. K., & Johnson, G. A. (1987). Methodology for the measurement and analysis of relaxation times in proton imaging.. Magn Reson Imaging, 5(3), 209–220. https://doi.org/10.1016/0730-725x(87)90022-1
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  - Sherrier, R. H., & Johnson, G. A. (1987). Regionally adaptive histogram equalization of the chest.. Ieee Trans Med Imaging, 6(1), 1–7. https://doi.org/10.1109/TMI.1987.4307791
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  - Sherrier, R. H., & Johnson, G. A. (1987). REGIONALLY ADAPTIVE HISTOGRAM EQUALIZATION OF THE CHEST.. Ieee Transactions on Medical Imaging, MI–6(1), 1–7.
  - Brown, J. M., Johnson, G. A., & Kramer, P. J. (1986). In Vivo Magnetic Resonance Microscopy of Changing Water Content in Pelargonium hortorum Roots.. Plant Physiol, 82(4), 1158–1160. https://doi.org/10.1104/pp.82.4.1158
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  - Hedlund, L. W., Johnson, G. A., & Mills, G. I. (1986). Magnetic resonance microscopy of the rat thorax and abdomen.. Invest Radiol, 21(11), 843–846. https://doi.org/10.1097/00004424-198611000-00002
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  - Hedlund, L. W., Johnson, G. A., Karis, J. P., & Effmann, E. L. (1986). MR "microscopy" of the rat thorax.. J Comput Assist Tomogr, 10(6), 948–952. https://doi.org/10.1097/00004728-198611000-00010
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  - Bone, S. N., Johnson, G. A., & Thompson, M. B. (1986). Three-dimensional magnetic resonance microscopy of the developing chick embryo.. Investigative Radiology, 21(10), 782–787. https://doi.org/10.1097/00004424-198610000-00003
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  - Bone, S. N., Johnson, G. A., & Thompson, M. B. (1986). Three-dimensional magnetic resonance microscopy of the developing chick embryo.. Invest Radiol, 21(10), 782–787. https://doi.org/10.1097/00004424-198610000-00003
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  - JOHNSON, G. A., BAILEY, J. E., BRUCK, R. I., & MATYAC, C. A. (1986). STUDIES OF DISEASED ROOT-TISSUE USING NUCLEAR-MAGNETIC-RESONANCE IMAGING. Phytopathology, 76(10), 1067–1067.
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  - BONE, S. N., JOHNSON, G. A., & THOMPSON, M. B. (1986). MRI MICROSCOPY OF THE DEVELOPING CHICK-EMBRYO. Investigative Radiology, 21(9), S34–S34.
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  - Hedlund, L., & Johnson, G. A. (1986). 53 MAGNETIC RESONANCE IMAGING OF THE RAT THORAX AND ABDOMEN. Investigative Radiology, 21(9), S14–S14. https://doi.org/10.1097/00004424-198609000-00071
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  - JOHNSON, G. A., THOMPSON, M. B., & DRAYER, B. P. (1986). 3-DIMENSIONAL MRI MICROSCOPY OF THE RAT-BRAIN. Investigative Radiology, 21(9), S25–S25.
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  - KARIS, J. P., GLOVER, G. H., & JOHNSON, G. A. (1986). VARIANT ANGLE GRADIENT REFOCUSING IN 3-DIMENSIONAL MRI MICROSCOPY. Investigative Radiology, 21(9), S34–S34.
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  - Drayer, B., Burger, P., Darwin, R., Riederer, S., Herfkens, R., & Johnson, G. A. (1986). MRI of brain iron.. Ajr Am J Roentgenol, 147(1), 103–110. https://doi.org/10.2214/ajr.147.1.103
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  - DRAYER, B., BURGER, P., CAIN, J., LEONG, J., JOHNSON, G. A., HEINZ, E. R., … HERFKENS, R. (1986). MR IMAGING AND PERLS STAIN OF BASAL GANGLIA IRON WITH NORMAL AGING. American Journal of Neuroradiology, 7(3), 554–555.
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  - DRAYER, B., BURGER, P., DARWIN, R., RIEDERER, S., HERFKENS, R., & JOHNSON, G. A. (1986). MAGNETIC-RESONANCE-IMAGING OF BRAIN IRON. American Journal of Neuroradiology, 7(3), 373–380.
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  - Drayer, B. P., Olanow, W., Burger, P., Johnson, G. A., Herfkens, R., & Riederer, S. (1986). Parkinson plus syndrome: diagnosis using high field MR imaging of brain iron.. Radiology, 159(2), 493–498. https://doi.org/10.1148/radiology.159.2.3961182
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  - McAdams, H. P., Johnson, G. A., Suddarth, S. A., & Ravin, C. E. (1986). Histogram-directed processing of digital chest images.. Invest Radiol, 21(3), 253–259. https://doi.org/10.1097/00004424-198603000-00011
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  - Johnson, G. A., Thompson, M. B., Drayer, B. P., & Bone, S. N. (1986). Magnetic resonance microscopy in neurologic models.. Acta Radiol Suppl, 369, 267–268.
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  - Johnson, G. A., Thompson, M. B., Gewalt, S. L., & Hayes, C. E. (1986). Nuclear magnetic resonance imaging at microscopic resolution. Journal of Magnetic Resonance (1969), 68(1), 129–137.
  - Sherrier, R. H., Johnson, G. A., Suddarth, S. A., Chiles, C., Hulka, C., & Ravin, C. E. (1985). Digital synthesis of lung nodules.. Invest Radiol, 20(9), 933–937. https://doi.org/10.1097/00004424-198512000-00008
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  - Blinder, R. A., Herfkens, R. J., Johnson, G. A., & Coleman, R. E. (1985). 121 SURFACE COIL MOTION ARTIFACTS IN MR IMAGING. Investigative Radiology, 20(6), S31–S31. https://doi.org/10.1097/00004424-198509000-00149
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  - Johnson, G. A., Herfkens, R. J., & Brown, M. A. (1985). Tissue relaxation time: in vivo field dependence.. Radiology, 156(3), 805–810. https://doi.org/10.1148/radiology.156.3.2991980
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  - MCADAMS, H. P., JOHNSON, G. A., SUDDARTH, S. A., & RAVIN, C. E. (1985). 71 HISTOGRAM DIRECTED PROCESSING OF DIGITAL CHEST IMAGES. Investigative Radiology, 20(6), S18–S18. https://doi.org/10.1097/00004424-198509000-00099
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  - McAdams, H. P., Johnson, G. A., Suddarth, S. A., & Ravin, C. E. (1985). 105 Optimization of Adaptive Filtration for Digital Chest Imaging. Investigative Radiology, 20(6), S27–S27. https://doi.org/10.1097/00004424-198509000-00133
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  - Sostman, H. D., Gore, J. C., Flye, M. W., Johnson, G. A., & Herfkens, R. J. (1985). Time course and mechanism of alterations in proton relaxation during liver regeneration in the rat.. Hepatology, 5(4), 538–543. https://doi.org/10.1002/hep.1840050403
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  - Johnson, G. A., Danieley, N., & Ravin, C. E. (1985). Processing alternatives for digital chest imaging.. Radiol Clin North Am, 23(2), 335–340.
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  - BLINDER, R. A., HERFKENS, R. J., COLEMAN, R. E., JOHNSON, G. A., SCHENCK, J. F., HART, H. R., … EDELSTEIN, W. A. (1985). HIGH-RESOLUTION MRI IMAGING AT 1.5T USING SURFACE COILS. Journal of Nuclear Medicine, 26(5), P8–P8.
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  - Herfkens, R. J., & Johnson, G. A. (1985). Magnetic resonance imaging at high-strength magnetic fields.. Magn Reson Annu, 197–215.
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  - SHERRIER, R. H., CHILES, C., SUDDARTH, S. A., JOHNSON, G. A., & RAVIN, C. E. (1985). EVALUATION OF COMPUTER SYNTHESIZED PULMONARY NODULES. Investigative Radiology, 20(6), S27–S27.
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  - SHERRIER, R. H., SUDDARTH, S. A., JOHNSON, G. A., & RAVIN, C. E. (1985). AUTOMATED OBSERVER STUDIES ON A DIGITAL CHEST SYSTEM. Investigative Radiology, 20(6), S18–S18.
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  - WINTER, T. C., JOHNSON, G. A., & MACFALL, J. R. (1985). PRECISION AND ACCURACY IN THE MEASUREMENT OF T1 ON AN IMAGING-SYSTEM. Investigative Radiology, 20(6), S14–S14.
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  - Godwin, J. D., Pelc, N. J., Johnson, G. A., Fram, E. K., & C, R. (1984). 106. PROGRESS IN ECG-GATED CT. Investigative Radiology, 19(5), S27–S27. https://doi.org/10.1097/00004424-198409000-00131
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  - Herfkens, R. J., Johnson, G. A., & Glover, G. (1984). 166. IN VIVO CHEMICAL SHIFT IMAGING OF HYDROGEN. Investigative Radiology, 19(5), S42–S42. https://doi.org/10.1097/00004424-198409000-00191
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  - Johnson, G. A., Herfkens, R. J., & MacFall, J. R. (1984). 129. IN VIVO FIELD DEPENDENCE OF TISSUE RELAXATION TIMES. Investigative Radiology, 19(5), S33–S33. https://doi.org/10.1097/00004424-198409000-00154
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  - Sherrier, R. H., Johnson, G. A., Ravin, C. E., & Suddarth, S. A. (1984). 194. DIGITAL SYNTHESIS OF LUNG NODULES. Investigative Radiology, 19(5), S49–S49. https://doi.org/10.1097/00004424-198409000-00219
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  - Stude, R., Hedlund, L., Johnson, G. A., & Thompson, W. M. (1984). 159. A CT EVALUATION OF THREE HEPATOBILIARY CONTRAST AGENTS. Investigative Radiology, 19(5), S40–S40. https://doi.org/10.1097/00004424-198409000-00184
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  - Godwin, J. D., Johnson, G. A., & Fram, E. K. (1984). A phantom for testing ECG-gated computed tomography of the heart.. Invest Radiol, 19(4), 279–283. https://doi.org/10.1097/00004424-198407000-00008
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  - BROWN, M. A., & JOHNSON, G. A. (1984). VARIABLE FIELD STUDIES OF POTENTIAL PARAMAGNETIC NMR CONTRAST AGENTS. Magnetic Resonance in Medicine, 1(2), 119–120.
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  - Brown, M. A., & Johnson, G. A. (1984). Transition metal-chelate complexes as relaxation modifiers in nuclear magnetic resonance.. Med Phys, 11(1), 67–72. https://doi.org/10.1118/1.595455
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  - DRAYER, B. P., HERFKENS, R. J., JOHNSON, G. A., HEINZ, E. R., & YEATES, A. E. (1984). HIGH-FIELD NMR IMAGING (1.5T) IN A HOSPITAL ENVIRONMENT. American Journal of Neuroradiology, 5(5), 669–669.
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  - HAYES, C. E., JOHNSON, G. A., & HERFKENS, R. J. (1984). DESIGN CONSIDERATIONS FOR SMALL ANIMAL IMAGING IN A LARGE BORE MRI SYSTEM. Investigative Radiology, 19(5), S25–S25.
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  - HEINZ, E. R., HERFKINS, R., JOHNSON, G. A., & DRAYER, B. P. (1984). CAROTID-ARTERY IMAGING BY A 1.5-T MR SYSTEM. American Journal of Neuroradiology, 5(5), 670–670.
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  - Johnson, G. A., & Ravin, C. E. (1983). A survey of digital chest radiography.. Radiol Clin North Am, 21(4), 655–664.
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  - Thompson, W. M., Stude, R., Bates, M., Hedlund, L., & Johnson, G. A. (1983). CONTRAST ENHANCEMENT OF THE LIVER DURING CT. Investigative Radiology, 18(4), S11–S11. https://doi.org/10.1097/00004424-198307000-00064
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  - Silverman, P. M., Johnson, G. A., & Korobkin, M. (1983). High-resolution sagittal and coronal reformatted CT images of the larynx.. Ajr Am J Roentgenol, 140(4), 819–822. https://doi.org/10.2214/ajr.140.4.819
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  - Thompson, W. M., Halvorsen, R. A., Gedgaudas, R. K., Kelvin, F. M., Rice, R. P., Woodfield, S., … Jorgensen, D. B. (1983). High kVp vs. low kVp for T-tube and operative cholangiography.. Radiology, 146(3), 635–642. https://doi.org/10.1148/radiology.146.3.6828675
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  - Godwin, J. D., Johnson, G. A., & Fram, E. K. (1983). Testing electrocardiographically-gated ct of the heart with a motion phantom. Investigative Radiology, 18(4), S33–S33.
  - JOHNSON, G. A., DANIELEY, N., SUDDARTH, S., & DUNNICK, N. R. (1983). A SYSTEM FOR DIGITAL VIDEODENSITOMETRY. American Journal of Roentgenology, 141(6), 1360–1361.
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  - Johnson, G. A., Danieley, N., Suddarth, S., & Dunnick, N. R. (1983). SYSTEM FOR DIGITAL VIDEODENSITOMETRY.. Proceedings of Spie the International Society for Optical Engineering, 419, 222–227.
  - Ravin, C. E., & Johnson, G. A. (1983). The 'optimal' chest radiograph. Seminars in Respiratory Medicine, 5(1), 1–14.
  - Silverman, P. M., Korobkin, M., Thompson, W. M., Johnson, G. A., Cole, T. B., & Fisher, S. R. (1982). Work in progress: high-resolution, thin-section computed tomography of the larynx.. Radiology, 145(3), 723–725. https://doi.org/10.1148/radiology.145.3.7146403
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  - Silverman, P. M., Johnson, G. A., Korobkin, M., & Thompson, W. M. (1982). High-resolution multiplanar CT images of the larynx.. Invest Radiol, 17(6), 634–637. https://doi.org/10.1097/00004424-198211000-00019
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  - Johnson, G. A., Godwin, J. D., & Fram, E. K. (1982). Gated multiplanar cardiac computed tomography.. Radiology, 145(1), 195–197. https://doi.org/10.1148/radiology.145.1.7122877
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  - Johnson, G. A., & Korobkin, M. (1982). Image techniques for multiplanar computed tomography.. Radiology, 144(4), 829–834. https://doi.org/10.1148/radiology.144.4.7111733
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  - Ford, K. K., Heinz, E. R., Johnson, G. A., Drayer, B. D., & Dubois, P. J. (1982). Low-cost digital subtraction angiography.. Ajnr Am J Neuroradiol, 3(4), 448–451.
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  - Godwin, J. D., Speckman, J. M., Fram, E. K., Johnson, G. A., Putman, C. E., Korobkin, M., & Breiman, R. S. (1982). Distinguishing benign from malignant pulmonary nodules by computed tomography.. Radiology, 144(2), 349–351. https://doi.org/10.1148/radiology.144.2.7089288
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  - Halvorsen, R. A., Woodfield, S., Hedlund, L., Johnson, G. A., & Thompson, W. M. (1982). CONTRAST ENHANCEMENT OF THE HEPATOBILIARY SYSTEM DURING CT. Investigative Radiology, 17(4), S27–S27. https://doi.org/10.1097/00004424-198207000-00134
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  - Silverman, P. M., Johnson, G. A., Korobkin, M., & Thompson, W. M. (1982). HIGH RESOLUTION MULTIPLANAR CT IMAGES OF THE LARYNX. Investigative Radiology, 17(4), S34–S34. https://doi.org/10.1097/00004424-198207000-00161
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  - Ford, K. K., Heinz, E. R., Johnson, G. A., Drayer, B. P., & Dubois, P. J. (1982). Low-cost digital subtraction. American Journal of Neuroradiology, 3(1), 99–99.
  - JOHNSON, G. A. (1982). A PRACTICAL APPROACH TO QUALITY ASSURANCE IN CT. American Journal of Roentgenology, 139(2), 427–427.
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  - Johnson, G. A. (1982). PRACTICAL APPROACH TO QUALITY ASSURANCE IN COMPUTED TOMOGRAPHY.. Proceedings of Spie the International Society for Optical Engineering, 347, 148–154.
  - Hedlund, L. W., Jones, D. P., Effmann, E. L., Johnson, G. A., Bates, W. M., Beck, J. W., … Putman, C. E. (1981). A computed tomographic study of the dog lung during hemorrhagic shock and after resuscitation.. Invest Radiol, 16(6), 466–472. https://doi.org/10.1097/00004424-198111000-00003
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  - Halvorsen, R. A., Woodfield, S., T., R., Allen, S. M., Hedlung, L. W., Johnson, G. A., & Thompson, W. M. (1981). AN EVALUATION OF CONTRAST AGENTS FOR CT OF THE HEPATOBILIARY SYSTEM. Investigative Radiology, 16(5), 387–387. https://doi.org/10.1097/00004424-198109000-00053
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  - Johnson, G. A., Nelson, C. E., & OʼFoghludha, F. (1981). IMAGING LIMITS IN DIGITAL RADIOGRAPHY. Investigative Radiology, 16(5), 377–377. https://doi.org/10.1097/00004424-198109000-00033
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  - KOROBKIN, M. E. L. V. Y. N., JOHNSON, G. A. L. L. A. N., & BREIMAN, R. I. C. H. A. R. D. S. (1981). METHODOLOGIC CONSIDERATIONS IN MULTIPLANAR REFORMATTING OF TRANSAXIAL CT IMAGES. Investigative Radiology, 16(5), 374–374. https://doi.org/10.1097/00004424-198109000-00027
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  - Nelson, C. E., Johnson, G. A., & Bentel, G. (1981). MULTI-PLANAR RECONSTRUCTION–APPLICATIONS IN RADIATION ONCOLOGY TREATMENT PLANNING. Investigative Radiology, 16(5), 417–417. https://doi.org/10.1097/00004424-198109000-00113
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  - Johnson, G. A., Korobkin, M., & Heinz, E. R. (1981). Evaluation of multiplanar imaging capabilities of four current computed tomography (CT) scanners. Proceedings of Spie the International Society for Optical Engineering, 273, 318–325. https://doi.org/10.1117/12.931819
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  - O’Foghludha, F., & Johnson, G. A. (1981). Voltage waveform effects on output and penetration of W- and Mo-anode mammographic tubes.. Phys Med Biol, 26(2), 291–303. https://doi.org/10.1088/0031-9155/26/2/008
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  - Johnson, G. A., & Ravin, C. E. (1981). Effect of vertical cassette holder design and construction on scatter-to-primary radiation ratios.. Radiology, 138(2), 461–464. https://doi.org/10.1148/radiology.138.2.7455131
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  - JOHNSON, G. A., FORD, K. K., & HEINZ, R. (1981). DIGITAL RADIOGRAPHY USING THE QUANTEX DS-20. American Journal of Roentgenology, 136(6), 1274–1274.
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  - JOHNSON, G. A., KOROBKIN, M., & HEINZ, R. (1981). AN EVALUATION OF MULTIPLANAR IMAGING CAPABILITIES OF 4 CURRENT CT SCANNERS. American Journal of Roentgenology, 136(6), 1279–1279.
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  - Johnson, G. A., Ford, K., & Heinz, R. (1981). DIGITAL RADIOGRAPHY USING THE QUANTEX DS-20.. Proceedings of Spie the International Society for Optical Engineering, 273, 114–119.
  - Wolbarsht, M. L., O’foghludha, F. A., Sliney, D. H., Guy, A. W., Smith, A. A., & Johnson, G. A. (1980). Electromagnetic emission from visual display units: A non-hazard. Proceedings of Spie the International Society for Optical Engineering, 229, 187–195. https://doi.org/10.1117/12.958802
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  - Johnson, G. A., & O’Foghludha, F. (1980). Simulation of mammographic x-ray spectra.. Med Phys, 7(3), 189–195. https://doi.org/10.1118/1.594684
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  - JOHNSON, G. A., & FOGHLUDA, F. (1980). AN INVESTIGATION OF TRANSMOLYBDENUM FLUORESCENT ANODES FOR MAMMOGRAPHY. American Journal of Roentgenology, 134(4), 855–855.
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  - JOHNSON, G. A., & RAVIN, C. E. (1980). SCATTERED RADIATION FROM THE FILM HOLDER IN CHEST RADIOGRAPHY. American Journal of Roentgenology, 134(1), 201–201.
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  - JOHNSON, G. A., HOLT, D. C., & EFFMANN, E. L. (1980). PRACTICAL GUIDELINES FOR SPECIMEN RADIOGRAPHY. Investigative Radiology, 15(5), 377–377.
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  - THOMPSON, W. M., AMBERG, J. R., LOWTHER, D. T., SHAW, M., BATES, M., & JOHNSON, G. A. (1980). GALLBLADDER DENSITY AND IODINE CONCENTRATION IN HUMANS DURING ORAL CHOLECYSTOGRAPHY - A COMPARISON OF IOPANOIC ACID AND IOPRONIC ACID. Gastrointestinal Radiology, 5(1), 83–83.
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  - Thompson, W. M., Amberg, J. R., & Shaw, M. (1980). Iodine concentration and radiographic density during oral cholecystography. Investigative Radiology, 15(5). https://doi.org/10.1097/00004424-198009000-00049
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  - HEDLUND, L., JONES, D., EFFMANN, E., JOHNSON, G. A., BATES, W., WOLFE, W., & PUTMAN, C. (1979). COMPUTERIZED TOMOGRAPHIC STUDY OF THE DOG LUNG DURING HEMORRHAGIC-SHOCK. Investigative Radiology, 14(5), 369–369.
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  - Johnson, G. A., & O’Foghludha, F. (1978). An experimental "trans-molybdenum" tube for mammography.. Radiology, 127(2), 511–516. https://doi.org/10.1148/127.2.511
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  - Johnson, G. A., Manson, E. L., & O’Foghludha, F. (1978). Simple method of obtaining Si(Li) detector efficiency. Nuclear Instruments and Methods, 151(1–2), 217–220. https://doi.org/10.1016/0029-554X(78)90491-3
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  - JOHNSON, G. A., & OFOGHLUDHA, F. (1977). SPECTROMETRIC STUDIES OF WAVEFORM AND FILTRATION EFFECTS IN MAMMOGRAPHY. Physics in Medicine and Biology, 22(3), 593–593.
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  - Johnson, G. A. (1975). Free radicals formed by exposure of pyrimidine solids to sodium atoms: an electron spin resonance study.. Proc Natl Acad Sci U S A, 72(3), 974–978. https://doi.org/10.1073/pnas.72.3.974
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- Book Sections
  - Spiliopoulos, D., Kagadis, G. C., Karnabatidis, D., Johnson, G. A., & Badea, C. T. (2016). Digital Subtracted Angiography of Small Animals. In G. C. Kagadis, N. L. Ford, G. K. Loudos, & D. Karnabatidis (Eds.), Handbook of Small Animal Imaging: Preclinical Imaging, Therapy, and Applications (pp. 67–75). Taylor & Francis Books, Inc., CRC Press.
  - Zhou, X., & Johnson, G. A. (2012). Magnetic resonance microscopy. In Medical Imaging: Principles and Practices. https://doi.org/10.1201/b12939
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  - Zhou, X., & Johnson, G. A. (2006). Magnetic resonance microscopy. In Medical Devices and Systems.
  - Zhou, X., & Allan Johnson, G. (2003). Magnetic resonance microscopy. In Biomedical Imaging.
- Conference Papers
  - Johnson, G. A., Anderson, R. J., Cook, J. J., Long, C., & Badea, A. (2016). Image-processing pipelines: Applications in magnetic resonance histology. In Progress in Biomedical Optics and Imaging Proceedings of Spie (Vol. 9784). https://doi.org/10.1117/12.2203525
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  - Calabrese, E., Hickey, P., Hulette, C., Zhang, J., Parente, B., Lad, S. P., & Johnson, G. A. (2015). Postmortem Diffusion MRI of the Human Brainstem and Thalamus for Deep Brain Stimulator Electrode Localization. In Movement Disorders (Vol. 30, pp. E6–E6). Ft Myers, FL: WILEY-BLACKWELL.
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  - Johnson, G. A., Badea, A., Calabrese, E., Liu, C., & Xie, L. (2014). Magnetic resonance histology—Applications in toxicology. In Toxicology Letters (Vol. 229, pp. S31–S32). Elsevier BV. https://doi.org/10.1016/j.toxlet.2014.06.148
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  - Badea, C. T., Befera, N., Clark, D., Qi, Y., & Johnson, G. A. (2014). Dual-energy micro-CT imaging of pulmonary airway obstruction: Correlation with micro-SPECT. In Progress in Biomedical Optics and Imaging Proceedings of Spie (Vol. 9038). https://doi.org/10.1117/12.2043094
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  - Clark, D. P., Johnson, G. A., & Badea, C. T. (2014). A multi-resolution approach to retrospectively-gated cardiac micro-CT reconstruction. In Progress in Biomedical Optics and Imaging Proceedings of Spie (Vol. 9033). https://doi.org/10.1117/12.2043044
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  - Clark, D. P., Johnson, G. A., & Badea, C. T. (2014). Robust material decomposition for spectral CT. In Progress in Biomedical Optics and Imaging Proceedings of Spie (Vol. 9038). https://doi.org/10.1117/12.2042546
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  - Johnston, S. M., Johnson, G. A., & Badea, C. T. (2014). Helical dual source cone-beam micro-CT. In 2014 Ieee 11th International Symposium on Biomedical Imaging, Isbi 2014 (pp. 177–180).
  - Clark, D., Johnston, S. M., Johnson, G. A., & Badea, C. T. (2013). The effect of scatter correction on dual energy micro-CT. In Progress in Biomedical Optics and Imaging Proceedings of Spie (Vol. 8668). https://doi.org/10.1117/12.2006904
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  - Parnell, S. E., Holloway, H. T., Paniagua, B., Oguz, I., Styner, M. A., Johnson, G. A., & Sulik, K. K. (2012). EFFECTS OF CHRONIC EARLY GESTATIONAL ETHANOL EXPOSURE ON THE DEVELOPING BRAIN: A MAGNETIC RESONANCE MICROSCOPY STUDY. In Alcoholism Clinical and Experimental Research (Vol. 36, pp. 279A-279A).
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  - Guo, X., Johnston, S. M., Johnson, G. A., & Badea, C. T. (2012). A comparison of sampling strategies for dual energy micro-CT. In Progress in Biomedical Optics and Imaging Proceedings of Spie (Vol. 8313). https://doi.org/10.1117/12.911548
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  - Clark, D., Johnson, G. A., & Badea, C. T. (2012). Denoising of 4D Cardiac Micro-CT Data Using Median-Centric Bilateral Filtration.. In Proc Spie Int Soc Opt Eng (Vol. 8314). United States. https://doi.org/10.1117/12.911478
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  - Badea, C. T., Stanton, I. N., Johnston, S. M., Johnson, G. A., & Therien, M. J. (2012). Investigations on X-ray luminescence CT for small animal imaging.. In Proc Spie Int Soc Opt Eng (Vol. 8313). United States. https://doi.org/10.1117/12.911465
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  - Lipinski, R. J., Hammond, P., Ament, J. J., Pecevich, S. J., Jiang, Y., Dehart, D. B., … Sulik, K. K. (2011). MAGNETIC RESONANCE MICROSCOPY-BASED 3D FACE-BRAIN CORRELATIONS IN AN FASD MOUSE MODEL. In Alcoholism Clinical and Experimental Research (Vol. 35, pp. 266A-266A).
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  - Badea, C. T., Johnston, S. M., Qi, Y., Ghaghada, K., & Johnson, G. A. (2011). Dual-energy micro-CT imaging for differentiation of iodine- and gold-based nanoparticles. In Progress in Biomedical Optics and Imaging Proceedings of Spie (Vol. 7961). https://doi.org/10.1117/12.878043
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  - Sulik, K. K., O’Leary-Moore, S. K., Parnell, S. E., Lipinski, R. J., Pecevich, S., Holloway, H. T., … Johnson, G. A. (2011). Magnetic resonance and diffusion tensor imaging of pre- and postnatal brains in a mouse Fetal Alcohol Spectrum Disorders model. In Alcohol (Vol. 45, pp. 282–282). Volterra, ITALY: ELSEVIER SCIENCE INC.
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  - Sulik, K. K., O’Leary-Moore, S. K., Parnell, S. E., Godin, E. A., Styner, M. A., Lipinski, R. J., & Johnson, G. A. (2010). MAGNETIC RESONANCE IMAGING-BASED ANALYSES OF A FETAL ALCOHOL SPECTRUM DISORDERS MOUSE MODEL. In Alcoholism Clinical and Experimental Research (Vol. 34, pp. 31A-31A).
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  - Constantinides, C., Aristokleous, N., Johnson, G. A., & Perperides, D. (2010). Static and dynamic cardiac modelling: Initial strides and results towards a quantitatively accurate mechanical heart model. In 2010 7th Ieee International Symposium on Biomedical Imaging: From Nano to Macro, Isbi 2010 Proceedings (pp. 496–499). https://doi.org/10.1109/ISBI.2010.5490300
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  - O’Leary-Moore, S. K., Parnell, S. E., Godin, E. A., Johnson, G. A., Styner, M., Oguz, I., … Sulik, K. K. (2010). MAGNETIC RESONANCE MICROSCOPY AND DIFFUSION TENSOR IMAGING DEFINE STAGE-DEPENDENT CHANGES IN BRAIN MORPHOLOGY AFTER PRENATAL ETHANOL EXPOSURE IN MICE. In Alcoholism Clinical and Experimental Research (Vol. 34, pp. 298A-298A). San Antonio, TX: WILEY-BLACKWELL.
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  - Johnston, S. M., Johnson, G. A., & Badea, C. T. (2010). GPU-based iterative reconstruction with total variation minimization for micro-CT. In Progress in Biomedical Optics and Imaging Proceedings of Spie (Vol. 7622). https://doi.org/10.1117/12.844368
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  - Zhang, X., Badea, C. T., Hood, G., Wetzel, A. W., Stiles, J. R., & Johnson, G. A. (2010). Free-space fluorescence tomography with adaptive sampling based on anatomical information from microCT.. In Proc Spie Int Soc Opt Eng (Vol. 7757). United States. https://doi.org/10.1117/12.841891
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  - Perez, B. A., Ghafoori, A. P., Johnston, S. M., Jeffords, L. B., Kim, Y., Badea, C. T., … Kirsch, D. G. (2009). Dissecting the Mechanism of Tumor Response to Radiation Therapy with Primary Lung Cancers in Mice. In International Journal of Radiation Oncology*Biology*Physics (Vol. 75, pp. S537–S537). Elsevier BV. https://doi.org/10.1016/j.ijrobp.2009.07.1227
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  - Badea, C. T., Johnston, S. M., Lin, M., Hedlund, L. W., & Johnson, G. A. (2009). 4D micro-CT-based perfusion imaging in small animals. In Progress in Biomedical Optics and Imaging Proceedings of Spie (Vol. 7258). https://doi.org/10.1117/12.811213
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  - Johnston, S. M., Johnson, G. A., & Badea, C. T. (2009). A material decomposition method for dual energy micro-CT. In Progress in Biomedical Optics and Imaging Proceedings of Spie (Vol. 7258). https://doi.org/10.1117/12.811673
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  - O’Leary-Moore, S. K., Godin, E. A., Parnell, S. E., Dehart, D. B., Ament, J. J., Johnson, G. A., … Sulik, K. K. (2009). EFFECTS OF ACUTE GESTATIONAL DAY 10 ETHANOL EXPOSURE ON THE DEVELOPING MOUSE BRAIN: A HIGH-RESOLUTION MAGNETIC RESONANCE MICROSCOPY STUDY. In Alcoholism Clinical and Experimental Research (Vol. 33, pp. 132A-132A).
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  - Zhang, X., Badea, C., Jacob, M., & Johnson, G. A. (2009). Development of a noncontact 3-D fluorescence tomography system for small animal in vivo imaging.. In Proc Spie Int Soc Opt Eng (Vol. 7191). United States. https://doi.org/10.1117/12.808199
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  - Badea, C. T., Johnston, S., Johnson, B., Lin, M., Hedlund, L. W., & Johnson, G. A. (2008). A dual micro-CT system for small animal imaging.. In Proc Spie Int Soc Opt Eng (Vol. 6913). United States. https://doi.org/10.1117/12.772303
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  - Bug, W., Wong, W. W., Gustafson, C., Johnson, G. A., Martone, M. E., Price, D. L., … Nissanov, J. (2007). Brain atlasing tool interoperation: NeuroTerrain-Smart Atlas synergistic visualization and analysis environment. In Proceedings of the 3rd International Ieee Embs Conference on Neural Engineering (pp. 280–283). https://doi.org/10.1109/CNE.2007.369665
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  - Wetzel, A. W., Badea, C. T., Pomerantz, S. M., Mistry, N., Nave, D., & Johnson, G. A. (2007). Measurement and modeling of 4D live mouse heart volumes from CT time series. In Proceedings of Spie the International Society for Optical Engineering (Vol. 6491).
  - Badea, C. T., Hedlund, L. W., Lin, M. D., Boslego, J. F., & Johnson, G. A. (2006). Functional imaging in small animals using tomographic digital subtraction angiography. In 2006 3rd Ieee International Symposium on Biomedical Imaging: From Nano to Macro Proceedings (Vol. 2006, pp. 1208–1211).
  - De Lin, M., Hedlund, L., & Johnson, G. A. (2006). Micro radiography imaging of the rodent with phenylephrine induced vascular hypertension. In 2006 3rd Ieee International Symposium on Biomedical Imaging: From Nano to Macro Proceedings (Vol. 2006, pp. 610–613).
  - Mistry, N., De Lin, M., Hedlund, L., & Johnson, G. A. (2006). Multimodality imaging of pulmonary function in the rodent. In 2006 3rd Ieee International Symposium on Biomedical Imaging: From Nano to Macro Proceedings (Vol. 2006, pp. 920–923).
  - Hedlund, L. W., & Johnson, G. A. (2005). Morphology of the small-animal lung using magnetic resonance microscopy.. In Proc Am Thorac Soc (Vol. 2, pp. 481–502). United States. https://doi.org/10.1513/pats.200507-074DS
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  - Badea, C. T., Hedlund, L. W., Wheeler, C. T., Mai, W., & Johnson, G. A. (2004). Volumetric micro-CT system for in vivo microscopy. In 2004 2nd Ieee International Symposium on Biomedical Imaging: Macro to Nano (Vol. 2, pp. 1377–1380).
  - Bowsher, J. E., Yuan, H., Hedlund, L. W., Turkington, T. G., Akabani, G., Badea, A., … Allan Johnson, G. (2004). Utilizing MRI information to estimate F18-FDG distributions in rat flank tumors. In Ieee Nuclear Science Symposium Conference Record (Vol. 4, pp. 2488–2492).
  - De Lin, M., Badea, C. T., & Johnson, G. A. (2004). Optimized radiographic spectra for digital subtraction angiography in the mouse. In 2004 2nd Ieee International Symposium on Biomedical Imaging: Macro to Nano (Vol. 2, pp. 1412–1415).
  - Mai, W., Badea, C. T., Wheeler, C. T., Hedlund, L. W., & Johnson, G. A. (2004). Effects of breathing motion on the spatial resolution in microscopic imaging techniques of rodents. In 2004 2nd Ieee International Symposium on Biomedical Imaging: Macro to Nano (Vol. 1, pp. 472–475).
  - Johnson, G. A., Cofer, G. P., Gewalt, S. L., Hedlund, L. W., & IEEE. (2002). An engineering approach to image-based phenotyping. In 2002 Ieee International Symposium on Biomedical Imaging, Proceedings (pp. 381–383).
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  - Wetzel, A. W., Pomerantz, S., Nave, D., Meixner, W., & Johnson, G. A. (2001). Distributed multiuser visualization of time varying anatomical data. In Proceedings Applied Imagery Pattern Recognition Workshop (Vol. 2001-January, pp. 109–114). https://doi.org/10.1109/AIPR.2001.991211
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  - MACFALL, J. S., & JOHNSON, G. A. (1994). USE OF MAGNETIC-RESONANCE-IMAGING IN THE STUDY OF PLANTS AND SOILS. In S. H. Anderson & J. W. Hopmans (Eds.), Tomography of Soil Water Root Processes (pp. 99–113). MINNEAPOLIS, MN: SOIL SCIENCE SOC AMER.
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  - MACFALL, J. S., & JOHNSON, G. A. (1994). NONDESTRUCTIVE, 3-DIMENSIONAL STUDY OF ROOT-GROWTH WITH MAGNETIC-RESONANCE MICROSCOPY (MRM). In J. A. Vozzo (Ed.), Research and Applications of Chemical Sciences in Forestry (Vol. 104, pp. 18–18). STARKVILLE, MS: US DEPT AGR, FOREST SERV SO FOREST EXPT STN.
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  - MACFALL, J. S., SPAINE, P. C., DOUDRICK, R. E., & JOHNSON, G. A. (1994). MAGNETIC-RESONANCE MICROSCOPY (MRM) OF WATER TRANSPORT AND BINDING IN FUSIFORM RUST GALLS. In J. A. Vozzo (Ed.), Research and Applications of Chemical Sciences in Forestry (Vol. 104, pp. 17–17). STARKVILLE, MS: US DEPT AGR, FOREST SERV SO FOREST EXPT STN.
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  - SPAINE, P., MACFALL, J. S., & JOHNSON, G. A. (1994). MAGNETIC-RESONANCE MICROSCOPY OF WATER-MOVEMENT THROUGH FUSIFORM RUST GALLS OF PINE. In Research and Applications of Chemical Sciences in Forestry (Vol. 104, pp. 11–16).
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  - BENVENISTE, H., JOHNSON, G. A., KOZNIEWSKA, E., MAIESE, K., NARITOMI, H., POVLISHOCK, J. T., & HOSSMANN, K. A. (1993). EXCITOTOXICITY AND ISCHEMIA IN THE RAT-BRAIN STUDIED IN-VIVO WITH HIGH-RESOLUTION MAGNETIC-RESONANCE-IMAGING. In M. Tomita, F. Mchedlishvili, W. Rosenblum, W. D. Heiss, & Y. Fukuuchi (Eds.), Microcirculatory Stasis in the Brain (Vol. 1031, pp. 369–376). TOKYO, JAPAN: ELSEVIER SCIENCE PUBL B V.
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- Theses and Dissertations
  - Johnson, G. A. (1974). Electron spin resonance studies of anion radicals of pyrimidine and sulfur amino acids in the solid state.
Teaching & Mentoring
Recent Courses
- BME 493: Projects in Biomedical Engineering (GE) 2019
- BME 494: Projects in Biomedical Engineering (GE) 2018
Advising & Mentoring
- Dr. Johnson mentors PhD / Masters students from Duke Biomedical Engineering (BME), Medical Physics, Medical Scientist Training Program, Radiology residents on research rotations, and post-doctoral fellows. He also mentors undergrads working on honors thesis projects, independent studies, and he develops specific projects for students interested in various aspects of small animal imaging research.
  
  CURRENT PhD STUDENTS
  •K Decker (Pre-PhD BME)
  
  PREVIOUS PhD STUDENTS (descending order)
  •R Dibb PhD (BME 2016) •D Clark PhD (BME 2015) •E Calabrese MD/PhD (BME 2014) •L Xie PhD (BME 2014) •E Subashi PhD (Med Physics 2014) •G Howles MD/PhD (BME 2010) •P Pandit (BME 2010) •J Nouls (BME 2009) •E Bucholz (BME 2008) •MD Lin PhD (2008) •N Mistry PhD (BME 2008) •J Song (Elec Comp Eng 2008) •A Petiet (BME 2007) •AA Sharief (BME 2006) •ACS Brau PhD (BME 2003) •A Nugent PhD (Physics 2003) •MS Chawla PhD (BME 2000) •S Hurlston PhD (BME 2000) •XJ Chen PhD (Physics 1999) •MD Shattuck PhD (Physics 1995) •RT Engelhardt PhD (Physics 1995) •JH Maki MD PhD (BME 1991) •T Winter PhD (Physics 1986)
  
  PREVIOUS RADIOLOGY RESIDENTS / FELLOWS
  •C Long MD/PhD (2015) •M Langman MD (2015) •EJ Langman MD (2013) •N Befera MD (2013) •S Shofer MD (2008) •WL Hall MD (1995) •M Banson MD (1992) •L Ardner MD (1994) •AF Mellin MD (1994) •JCM Hsu MD (1993) •SE Dockery MD (1991) •T Farmer MD (1990) •TW Malisch MD (1990) •CH Maynor MD (1989) •CF Beaulieu MD (1989) •MD Hollett MD (1988) •EK Fram MD (1987) •SN Bone MD (1987) •EK Fram MD (1987) •JP Karis (1987) •HP McAdams MD (1986) •R Sherrier MD (1985) •JT Douglas MD (1984)
Available to mentor:
- Masters
- PhD
- Post-Doc
- Resident
- Undergraduate
Scholarly, Clinical, & Service Activities
Service to the Profession
- Editorial Board. Journal of Magnetic Resonance in Medicine. 1993 1993

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Books

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Book Sections

Conference Papers

Theses and Dissertations

Recent Courses

Advising & Mentoring

Available to mentor:

Service to the Profession