Calibration

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  Subject Areas on Research

  • 16-Channel biphasic current-mode programmable charge balanced neural stimulation. 
  • 3D refraction correction and extraction of clinical parameters from spectral domain optical coherence tomography of the cornea. 
  • A Novel Laryngoscope With an Adjustable Distal Tip. 
  • A Self-Calibrating Radar Sensor System for Measuring Vital Signs. 
  • A calibration hierarchy for risk models was defined: from utopia to empirical data. 
  • A feasibility study using radiochromic films for fast neutron 2D passive dosimetry. 
  • A multi-site array for combined local electrochemistry and electrophysiology in the non-human primate brain. 
  • A novel silicon array designed for intraoperative charged particle imaging. 
  • A practical three-dimensional dosimetry system for radiation therapy. 
  • A prediction model for advanced colorectal neoplasia in an asymptomatic screening population. 
  • A round-robin gamma stereotactic radiosurgery dosimetry interinstitution comparison of calibration protocols. 
  • A structural framework for interpretation of four-electrode microimpedance spectra in cardiac tissue. 
  • A unifying framework for interpreting and predicting mutualistic systems. 
  • AAPM TG 191: Clinical use of luminescent dosimeters: TLDs and OSLDs. 
  • Abdominal multislice CT for obese patients: effect on image quality and radiation dose in a phantom study. 
  • Accuracy of a remote eye tracker for radiologic observer studies: effects of calibration and recording environment. 
  • Accuracy of inhomogeneity correction in photon radiotherapy from CT scans with different settings. 
  • Air kerma based dosimetry calibration for the Leksell Gamma Knife. 
  • An exposure indicator for digital radiography: AAPM Task Group 116 (executive summary). 
  • An in-house protocol for improved flood field calibration of TrueBeam FFF cine imaging. 
  • An investigation into the dosimetry of a nine-field tomotherapy irradiation using BANG-gel dosimetry. 
  • An overview of a camera-based SPECT system. 
  • Analysis of a glucose tetrasaccharide elevated in Pompe disease by stable isotope dilution-electrospray ionization tandem mass spectrometry. 
  • Analysis of glycosaminoglycans in cerebrospinal fluid from patients with mucopolysaccharidoses by isotope-dilution ultra-performance liquid chromatography-tandem mass spectrometry. 
  • Analysis of inflammatory cytokines in human blood, breath condensate, and urine using a multiplex immunoassay platform. 
  • Analysis of nonylphenol and nonylphenol ethoxylates in environmental samples by mixed-mode high-performance liquid chromatography-electrospray mass spectrometry. 
  • Analytic bias of thyroid function tests: analysis of a College of American Pathologists fresh frozen serum pool by 3900 clinical laboratories. 
  • Application of net reclassification index to non-nested and point-based risk prediction models: a review. 
  • Application of the Seattle Heart Failure Model in ambulatory patients presented to an advanced heart failure therapeutics committee. 
  • Aqueous and serum-based materials compared for use as simulated calibrators for three ionized calcium analyzers. 
  • Aqueous solution speciation of Fe(III) complexes with dihydroxamate siderophores alcaligin and rhodotorulic acid and synthetic analogues using electrospray ionization mass spectrometry. 
  • Assays for measuring rivaroxaban: their suitability and limitations. 
  • Assays for recombinant proteins: a problem in non-linear calibration. 
  • Assessing effects of pressure on tumor and normal tissue physiology using an automated self-calibrated, pressure-sensing probe for diffuse reflectance spectroscopy. 
  • Assessing the Performance of Risk Models With Discrimination and Calibration. 
  • Assessment of the residual error in soft tissue setup in patients undergoing partial breast irradiation: results of a prospective study using cone-beam computed tomography. 
  • Automated characterization of perceptual quality of clinical chest radiographs: validation and calibration to observer preference. 
  • Available space and extracellular transport of macromolecules: effects of pore size and connectedness. 
  • Bootstrap calibration of TRANSMIT for informative missingness of parental genotype data. 
  • C-mode real-time tomographic reflection for a matrix array ultrasound sonic flashlight. 
  • Ca2+ channel nanodomains boost local Ca2+ amplitude. 
  • Calibrating single-ended fiber-optic Raman spectra distributed temperature sensing data. 
  • Calibration inference based on multiple runs of an immunoassay. 
  • Calibration of methylene-referenced lipid-dissolved xenon frequency for absolute MR temperature measurements. 
  • Calibration using angiographic catheters as scaling devices--importance of filming the catheters not filled with contrast medium. 
  • Calibration-free absolute quantification of particle concentration by statistical analyses of photoacoustic signals in vivo. 
  • Cardiac Pressure-Volume Loop Analysis Using Conductance Catheters in Mice. 
  • Cardiac micro-computed tomography for morphological and functional phenotyping of muscle LIM protein null mice. 
  • Cardiac output determination from the arterial pressure wave: clinical testing of a novel algorithm that does not require calibration. 
  • Characterization of implantable biosensor membrane biofouling. 
  • Clinical evaluation of continuous noninvasive blood pressure monitoring: accuracy and tracking capabilities. 
  • Clinical implementation of AAPM TG61 protocol for kilovoltage x-ray beam dosimetry. 
  • Cocaine acts on accumbens monoamines and locomotor behavior via a 5-HT2A/2C receptor mechanism as shown by ketanserin: 24-h follow-up studies. 
  • Combined T2* and T1 measurements for improved perfusion and permeability studies in high field using dynamic contrast enhancement. 
  • Combining model results and monitoring data for water quality assessment. 
  • Commissioning an Exradin W2 plastic scintillation detector for clinical use in small radiation fields. 
  • Computed tomography dose index and dose length product for cone-beam CT: Monte Carlo simulations. 
  • Conditions for numerically accurate TMS electric field simulation. 
  • Constancy checks of well-type ionization chambers with external-beam radiation units. 
  • Constructing a multichannel electrocardiography system from a few standardized, high-level components. 
  • Continuous high-frequency dissolved O2/Ar measurements by Equilibrator Inlet Mass Spectrometry (EIMS) 
  • Contribution of articular surface geometry to ankle stabilization. 
  • Correcting for measurement error in individual-level covariates in nonlinear mixed effects models. 
  • Daily bone alignment with limited repeat CT correction rivals daily ultrasound alignment for prostate radiotherapy. 
  • Decreased analyte transport through implanted membranes: differentiation of biofouling from tissue effects. 
  • Delivered Dose Distribution Visualized Directly With Onboard kV-CBCT: Proof of Principle. 
  • Determination of mechanical and electronic shifts for pinhole SPECT using a single point source. 
  • Determination of morphine and morphine glucuronides in human plasma by 96-well plate solid-phase extraction and liquid chromatography-electrospray ionization mass spectrometry. 
  • Determination of residual manganese in Mn porphyrin-based superoxide dismutase (SOD) and peroxynitrite reductase mimics. 
  • Development and validation of a high-throughput stereoselective LC-MS/MS assay for bupropion, hydroxybupropion, erythrohydrobupropion, and threohydrobupropion in human plasma. 
  • Development, validation, and application of a microsimulation model to predict stroke and mortality in medically managed asymptomatic patients with significant carotid artery stenosis. 
  • Dexmedetomidine pharmacodynamics: part I: crossover comparison of the respiratory effects of dexmedetomidine and remifentanil in healthy volunteers. 
  • Differential effects of anesthetic agents on outcome from near-complete but not incomplete global ischemia in the rat. 
  • Discrimination slope and integrated discrimination improvement - properties, relationships and impact of calibration. 
  • EFFECTIVE DOSE ESTIMATION FROM ORGAN DOSE MEASUREMENTS IN FAST-kV SWITCH DUAL ENERGY COMPUTED TOMOGRAPHY. 
  • EXpectation Propagation LOgistic REgRession (EXPLORER): distributed privacy-preserving online model learning. 
  • Earbud-based sensor for the assessment of energy expenditure, HR, and VO2max. 
  • Effect of balloon size and stepwise inflation technique on the acute results of Inoue mitral commissurotomy. Inoue Balloon Catheter Investigators. 
  • Effect of respiratory motion on lung counting efficiency using a 4D NURBS-based cardio-torso (NCAT) phantom. 
  • Effects of characteristic x-rays on assay of I-123 by dose calibrator. 
  • Equalization of four cardiovascular risk algorithms after systematic recalibration: individual-participant meta-analysis of 86 prospective studies. 
  • Evaluation of a recombinant yeast cell estrogen screening assay. 
  • Evaluation of corneal refraction in a model of a gaze tracking system. 
  • Evaluation of markers and risk prediction models: overview of relationships between NRI and decision-analytic measures. 
  • Evaluation of pediatric near-infrared cerebral oximeter for cardiac disease. 
  • Evaluation of serum protein profiling by surface-enhanced laser desorption/ionization time-of-flight mass spectrometry for the detection of prostate cancer: I. Assessment of platform reproducibility. 
  • Evaluation of the YSI 2300 glucose analyzer: algorithm-corrected results are accurate and specific. 
  • Evaluation of the absorbed dose to the breast using radiochromic film in a dedicated CT mammotomography system employing a quasi-monochromatic x-ray beam. 
  • Evaluation of the deformation and corresponding dosimetric implications in prostate cancer treatment. 
  • Experimental 3D dosimetry around a high-dose-rate clinical 192Ir source using a polyacrylamide gel (PAG) dosimeter. 
  • Experimental statistics for biological sciences. 
  • External Validation for Acute Kidney Injury Severity Scores: A Multicenter Retrospective Study in 14 Japanese ICUs. 
  • Facile separation and determination of Aconitine alkaloids in traditional Chinese medicines by CE with tris(2,2'-bipyridyl) ruthenium(II)-based electrochemiluminescence detection. 
  • Fiber-optic detector for real time dosimetry of a micro-planar x-ray beam. 
  • Fluorescence imaging of changes in intracellular chloride in living brain slices. 
  • Geometric calibration for a dual tube/detector micro-CT system. 
  • High numerical aperture Fourier ptychography: principle, implementation and characterization. 
  • High resolution gel-dosimetry by optical-CT and MR scanning. 
  • History and Justification of a National Blood Pressure Measurement Validated Device Listing. 
  • Hormesis and debilitation effects in stress experiments using the nematode worm Caenorhabditis elegans: the model of balance between cell damage and HSP levels. 
  • How to measure color using spectrometers and calibrated photographs. 
  • Hydraulic time constants for transpiration of loblolly pine at a free-air carbon dioxide enrichment site 
  • Imaging system QA of a medical accelerator, Novalis Tx, for IGRT per TG 142: our 1 year experience. 
  • Implementation of dual-energy technique for virtual monochromatic and linearly mixed CBCTs. 
  • Implementation of radiochromic film dosimetry protocol for volumetric dose assessments to various organs during diagnostic CT procedures. 
  • Importance of point-by-point back projection correction for isocentric motion in digital breast tomosynthesis: relevance to morphology of structures such as microcalcifications. 
  • Improving Treatment Trial Outcomes for Rett Syndrome: The Development of Rett-specific Anchors for the Clinical Global Impression Scale. 
  • Improving calibration accuracy in gel dosimetry. 
  • In modern linacs monitor units should be defined in water at 10 cm depth rather than at dmax. 
  • In situ measurements of phytoplankton fluorescence using low cost electronics. 
  • In vivo characterization of tumor vasculature using iodine and gold nanoparticles and dual energy micro-CT. 
  • Inertial cavitation and associated acoustic emission produced during electrohydraulic shock wave lithotripsy. 
  • Integrated parallel reception, excitation, and shimming (iPRES) with multiple shim loops per radio-frequency coil element for improved B0 shimming. 
  • Integrated radio-frequency/wireless coil design for simultaneous MR image acquisition and wireless communication. 
  • International Workshop on Standardization in Clinical Magnetic Resonance Spectroscopy Measurements: proceedings and recommendations. 
  • Introduction to grayscale calibration and related aspects of medical imaging grade liquid crystal displays. 
  • Investigation into image quality and dose for different patient geometries with multiple cone-beam CT systems. 
  • Label-free analysis of tenofovir delivery to vaginal tissue using co-registered confocal Raman spectroscopy and optical coherence tomography. 
  • Light-sheet fluorescence imaging to localize cardiac lineage and protein distribution. 
  • Localized force application reveals mechanically sensitive domains of Piezo1. 
  • Measurement of erythrocyte velocity by use of a periodic differential detector. 
  • Measuring mechanical tension across vinculin reveals regulation of focal adhesion dynamics 
  • Medical physics 3.0 versus 1.0: A case study in digital radiography quality control. 
  • Method for improved accuracy in endogenous urea recovery marker calibrations for microdialysis in tumors. 
  • Multi-analyte analysis system using an antibody-based biochip. 
  • Multiple imputation for harmonizing longitudinal non-commensurate measures in individual participant data meta-analysis. 
  • Mutual Information-Driven Subject-Invariant and Class-Relevant Deep Representation Learning in BCI. 
  • Near-infrared spectrometry of abdominal aortic aneurysm in the ApoE-/- mouse. 
  • New method of measuring coronary diameter by electron-beam computed tomographic angiography using adjusted thresholds determined by calibration with aortic opacity. 
  • Nitrosylation of manganese(II) tetrakis(N-ethylpyridinium-2-yl)porphyrin: a simple and sensitive spectrophotometric assay for nitric oxide. 
  • Noise in polymer gel measurements using MRI. 
  • Optimal processing of photoreceptor signals is required to maximize behavioural sensitivity. 
  • Oxygen distributions within R3230Ac tumors growing in dorsal flap window chambers in rats. 
  • PCR based determination of mitochondrial DNA copy number in multiple species. 
  • Performance evaluation of computed radiography systems. 
  • Phosphorus 31 magnetic resonance spectroscopy of human placenta and quantitation with perchloric acid extracts. 
  • Pitfalls in the determination of absolute dimensions using angiographic catheters as calibration devices in quantitative angiography. 
  • Pixel response-based EPID dosimetry for patient specific QA. 
  • Plate-specific gain map correction for the improvement of detective quantum efficiency in computed radiography. 
  • Point dose verification for intensity modulated radiosurgery using Clarkson's method. 
  • Postmortem validation of the automated coronary analysis (ACA) software package. 
  • Practical aspects of in situ 16O (gamma,n) 15O activation using a conventional medical accelerator for the purpose of perfusion imaging. 
  • Predictive accuracy in the neuroprediction of rearrest. 
  • Pretreatment of epithelial cells with live Streptococcus pneumoniae has no detectable effect on influenza A virus replication in vitro. 
  • Psychometric evaluation and calibration of health-related quality of life item banks: plans for the Patient-Reported Outcomes Measurement Information System (PROMIS). 
  • Pulmonary vascular impedance analysis of adaptation to chronically elevated blood flow in the awake dog. 
  • Quantification of the tip movement of lithotripsy flexible pneumatic probes. 
  • Quantification of whole-brain oxygenation extraction fraction and cerebral metabolic rate of oxygen consumption in adults with sickle cell anemia using individual T2 -based oxygenation calibrations. 
  • Quantitative blood flow measurements in the small animal cardiopulmonary system using digital subtraction angiography. 
  • Radiation dose estimation for prospective and retrospective ECG-gated cardiac CT angiography in infants and small children using a 320-MDCT volume scanner. 
  • Radiation dosimetry using polymer gels: methods and applications. 
  • Radiation exposure to patients during interventional procedures in 20 countries: initial IAEA project results. 
  • Real-time 3-D contrast-enhanced transcranial ultrasound and aberration correction. 
  • Real-time dose-rate monitoring with gynecologic brachytherapy: Results of an initial clinical trial. 
  • Real-time frequency domain temperature and oxygen sensor with a single optical fiber. 
  • Recommendations on the practice of calibration, dosimetry, and quality assurance for gamma stereotactic radiosurgery: Report of AAPM Task Group 178. 
  • Routine laboratory results and thirty day and one-year mortality risk following hospitalization with acute decompensated heart failure. 
  • SERS-based plasmonic nanobiosensing in single living cells. 
  • SPECT using a specially designed cone beam collimator. 
  • Self-phase modulation signatures of neuronal activity 
  • Separating DNA with different topologies by atomic force microscopy in comparison with gel electrophoresis. 
  • Simple high-performance liquid chromatographic method to monitor vigabatrin, and preliminary review of concentrations determined in epileptic patients. 
  • Simplified Instrument Calibration for Wide-Field Fluorescence Resonance Energy Transfer (FRET) Measured by the Sensitized Emission Method. 
  • Simultaneous determination of alpha-aminoadipic semialdehyde, piperideine-6-carboxylate and pipecolic acid by LC-MS/MS for pyridoxine-dependent seizures and folinic acid-responsive seizures. 
  • Simultaneous determination of guanine, uric acid, hypoxanthine and xanthine in human plasma by reversed-phase high-performance liquid chromatography with amperometric detection. 
  • Simultaneous determination of trimethoprim and sulfamethoxazole in dried plasma and urine spots. 
  • Simultaneous quantification of GABAergic 3alpha,5alpha/3alpha,5beta neuroactive steroids in human and rat serum. 
  • Snapshot 2D tomography via coded aperture x-ray scatter imaging. 
  • Solutions to problems in dose calibrator assay of iodine-123. 
  • Some general estimation methods for nonlinear mixed-effects models. 
  • Some observations on fibrillations and positive sharp waves. 
  • Spectral diffusion: an algorithm for robust material decomposition of spectral CT data. 
  • Spectroscopic diagnosis of esophageal cancer: new classification model, improved measurement system. 
  • Static secondary ion mass spectrometric investigation of the surface chemistry of organic plasma-deposited films created from oxygen-containing precursors. 3. Multivariate statistical modeling. 
  • Statistical issues in quality-of-life assessment. 
  • Strategic planning to reduce the burden of stroke among veterans: using simulation modeling to inform decision making. 
  • Strategies for automatic online treatment plan reoptimization using clinical treatment planning system: a planning parameters study. 
  • Superselective gelfoam embolotherapy using a highly visible small caliber catheter. 
  • Surface-enhanced-Raman-scattering-inducing nanoprobe for spectrochemical analysis. 
  • Testing for antiphospholipid antibodies with solid phase assays: guidance from the SSC of the ISTH. 
  • Testing homogeneity of intra-run variance parameters in immunoassay. 
  • The effect of ambient pressure on well chamber response: experimental results with empirical correction factors. 
  • The effect of the perflubron emulsion Oxygent on the calibration characteristics of polarographic oxygen electrodes. 
  • The international standard for atrial natriuretic factor. Calibration by an international collaborative study. 
  • The metabotropic glutamate receptor subtype 5 antagonist fenobam is analgesic and has improved in vivo selectivity compared with the prototypical antagonist 2-methyl-6-(phenylethynyl)-pyridine. 
  • The profound effects of patient arm positioning on organ doses from CT procedures calculated using Monte Carlo simulations and deformable phantoms. 
  • Toward an organ based dose prescription method for the improved accuracy of murine dose in orthovoltage x-ray irradiators. 
  • Towards a field-compatible optical spectroscopic device for cervical cancer screening in resource-limited settings: effects of calibration and pressure. 
  • Tunable molecular tension sensors reveal extension-based control of vinculin loading. 
  • Two-dimensional tracking of ncd motility by back focal plane interferometry. 
  • Using Phylogenomic Data to Explore the Effects of Relaxed Clocks and Calibration Strategies on Divergence Time Estimation: Primates as a Test Case. 
  • Validity of a simple ST-elevation acute myocardial infarction risk index: are randomized trial prognostic estimates generalizable to elderly patients? 
  • Viewing angle performance of medical liquid crystal displays. 
  • Warming of the Antarctic ice-sheet surface since the 1957 International Geophysical Year. 
  • What is perfect health to an 85-year-old?: evidence for scale recalibration in subjective health ratings. 
  • [Performance measures for prediction models and markers: evaluation of predictions and classifications]. 
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  Keywords of People

  • Badea, Cristian Tudorel, Professor in Radiology, Biomedical Engineering
  • Charles, Hal Cecil, Adjunct Associate Professor in the Department of Radiology, Radiology
  • Chen, Jun, Professor of Medicine, Duke Cancer Institute
  • Field, Greg D., Adjunct Associate Professor of Neurobiology, Neurobiology
  • Meyer, Joel, Associate Professor of Environmental Genomics in the Division of Environmental Sciences and Policy, Nicholas Institute-Energy Initiative
  • O'Daniel, Jennifer Colleen, Assistant Professor of Radiation Oncology, Radiation Oncology
  • Tornai, Martin Paul, Associate Professor of Radiology, Radiology
  • Walter, Christopher, Professor of Physics, Physics
  • Wu, Qingrong, Professor of Radiation Oncology, Radiation Oncology