Overview
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.
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Current Appointments & Affiliations
Recent Publications
Journal Article
Eur Radiol
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December 2013
OBJECTIVES: To investigate the impact of an adaptive statistical iterative reconstruction (ASiR) algorithm on diagnostic accuracy and confidence for the diagnosis of hypervascular liver tumours, as well as the reader's perception of image quality, using a ...
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Journal Article
Radiology
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June 2011
PURPOSE: To estimate patient-specific radiation dose and cancer risk for pediatric chest computed tomography (CT) and to evaluate factors affecting dose and risk, including patient size, patient age, and scanning parameters. MATERIALS AND METHODS: The inst ...
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Journal Article
Progress in Biomedical Optics and Imaging - Proceedings of SPIE
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June 15, 2009
The purpose of this study is to develop a method for estimating patient-specific dose from abdomen-pelvis CT examinations and to investigate dose variation across patients in the same weight group. Our study consisted of seven pediatric patients in the sam ...
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Education, Training & Certifications
University of Pennsylvania ·
1976
Ph.D.
