James George Colsher | Scholars@Duke

James George Colsher
Adjunct Assistant Professor in the Department of Radiology

Dr. James Colsher, PhD, is an Adjunct Assistant Professor of Radiology.

Dr. Colsher was with GE Healthcare from 1982 until his retirement in 2009. He started at GE as a Senior Scientist working first in CT and later in PET. He was Manager, Academic Research directing research activities at major medical centers in the eastern US. After his retirement, he joined the Faculty of the Graduate Program in Medical Physics where he informally mentors students. Dr. Colsher’s expertise includes CT and PET imaging. Previous research activities included the development of calibration and correction methods, 2D and 3D image reconstruction algorithms, system simulation, and performance evaluation. His current research efforts are focused on dose reduction for diagnostic CT and the use of low dose CT for PET attenuation correction.

Current Appointments & Affiliations

Adjunct Assistant Professor in the Department of Radiology, Radiology, Clinical Science Departments 2018

Contact Information

Box 3808 Med Ctr, Durham, NC 27710
Dept of Radiology, Durham, NC 27710
james.colsher@duke.edu (919) 684-7245

Background
Education, Training, & Certifications
- Ph.D., University of Pennsylvania 1976
Previous Appointments & Affiliations
- Adjunct Assistant Professor in the Department of Radiology, Radiology, Nuclear Medicine, Radiology 2009 - 2018
Expertise
Subject Headings
Publications & Artistic Works
Selected Publications
- Academic Articles
  - Marin, Daniele, Kingshuk Roy Choudhury, Rajan T. Gupta, Lisa M. Ho, Brian C. Allen, Sebastian T. Schindera, James G. Colsher, Ehsan Samei, and Rendon C. Nelson. “Clinical impact of an adaptive statistical iterative reconstruction algorithm for detection of hypervascular liver tumours using a low tube voltage, high tube current MDCT technique.” Eur Radiol 23, no. 12 (December 2013): 3325–35. https://doi.org/10.1007/s00330-013-2964-1.
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  - Li, Xiang, Ehsan Samei, W Paul Segars, Gregory M. Sturgeon, James G. Colsher, and Donald P. Frush. “Patient-specific radiation dose and cancer risk for pediatric chest CT.” Radiology 259, no. 3 (June 2011): 862–74. https://doi.org/10.1148/radiol.11101900.
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  - Li, X., E. Samei, W. P. Segars, G. M. Sturgeon, J. G. Colsher, and D. P. Frush. “Patient-specific dose estimation for pediatric abdomen-pelvisCT.” Progress in Biomedical Optics and Imaging Proceedings of Spie 7258 (June 15, 2009). https://doi.org/10.1117/12.813531.
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  - Colsher, J. G., J. Hsieh, J. B. Thibault, A. Lonn, T. Pan, S. J. Lokitz, and T. G. Turkington. “Ultra low dose CT for attenuation correction in PET/CT.” Ieee Nuclear Science Symposium Conference Record, December 1, 2008, 5506–11. https://doi.org/10.1109/NSSMIC.2008.4774499.
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  - Turkington, T. G., J. J. Williams, J. W. Wilson, J. G. Colsher, D. L. McDaniel, C. L. Kim, S. G. Ross, C. W. Stearns, and S. D. Wollenweber. “Performance of a BGO PET/CT with higher resolution PET detectors.” Ieee Nuclear Science Symposium Conference Record 4 (December 1, 2005): 1891–94. https://doi.org/10.1109/NSSMIC.2005.1596701.
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  - Wilson, J. W., T. G. Turkington, J. M. Wilson, J. G. Colsher, and S. G. Ross. “Image quality vs. NEC in 2D and 3D PET.” Ieee Nuclear Science Symposium Conference Record 4 (December 1, 2005): 2133–37. https://doi.org/10.1109/NSSMIC.2005.1596756.
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  - Turkington, T. G., J. W. Wilson, and J. G. Colsher. “Adjusting the low energy threshold for large bodies in PET.” Ieee Nuclear Science Symposium Conference Record 5 (December 1, 2004): 2872–76.
  - Bice, A. N., and R. S. Miyaoka. “Standardized tests of PET performance.” J Nucl Med 33, no. 7 (July 1992): 1429–31.
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  - Karp, J. S., M. E. Daube-Witherspoon, E. J. Hoffman, T. K. Lewellen, J. M. Links, W. H. Wong, R. D. Hichwa, M. E. Casey, J. G. Colsher, and R. E. Hitchens. “Performance standards in positron emission tomography.” J Nucl Med 32, no. 12 (December 1991): 2342–50.
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  - Muehllehner, G., J. G. Colsher, and R. M. Lewitt. “A hexagonal bar positron camera: Problems and solutions.” Ieee Transactions on Nuclear Science 30, no. 1 (January 1, 1983): 652–60. https://doi.org/10.1109/TNS.1983.4332349.
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  - Colsher, J. G., and G. Muehllehner. “Effects of wobbling motion on image quality in positron tomography.” Ieee Transactions on Nuclear Science 28, no. 1 (January 1, 1981): 90–93. https://doi.org/10.1109/TNS.1981.4331145.
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  - Muehllehner, G., J. G. Colsher, and E. W. Stoub. “Correction for field nonuniformity in scintillation cameras through removal of spastial distortion.” J Nucl Med 21, no. 8 (August 1980): 771–76.
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  - Colsher, J. G. “Fully three-dimensional positron emission tomography.” Phys Med Biol 25, no. 1 (January 1980): 103–15. https://doi.org/10.1088/0031-9155/25/1/010.
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  - Muehllehner, G., and J. G. Colsher. “Use of position sensitive detectors in positron imaging.” Ieee Transactions on Nuclear Science 27, no. 1 (January 1, 1980): 569–71. https://doi.org/10.1109/TNS.1980.4330890.
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  - Colsher, James G. “Iterative three-dimensional image reconstruction from tomographic projections.” Computer Graphics and Image Processing 6, no. 6 (December 1977): 513–37. https://doi.org/10.1016/s0146-664x(77)80014-2.
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- Conference Papers
  - Colsher, James G., Jiang Hsieh, Jean-Baptiste Thibault, Albert Lonn, Tinsu Pan, Stephen J. Lokitz, and Timothy G. Turkington. “Ultra Low Dose CT for Attenuation Correction in PET/CT.” In 2008 Ieee Nuclear Science Symposium and Medical Imaging Conference (2008 Nss/Mic), Vols 1 9, 4779-+. IEEE, 2009.
    Link to Item

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Education, Training, & Certifications

Previous Appointments & Affiliations

Subject Headings

Selected Publications

Academic Articles

Conference Papers