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Brief Biography of Philip F. Judy

Philip F. Judy was the Director of Physics and Engineering Division at Brigham and Women’s Hospital, Boston. He was in this position starting in 1973.  He retired as Director of Physics on October 1, 2011. He is a retired Associate Professor of Radiology at Harvard.  He received a PhD of Radiological Sciences (Physics) in 1971 from University of Wisconsin, Madison, Wisconsin.  He has served on the Board Directors of American Association of Physicists in Medicine and Academy of Radiology Research.  The Academy of Radiology Research was moving force behind the creation of the National Institute of Biomedical Imaging and Bioengineering at the National Institutes of Medicine.  In 1986, he served as a Vice-President of Radiological Society of North America. 

            His thesis research was the basis for U.S. Patent 3,996,471, Method and System for in vivo Measurement of Bone Tissue Using a Two Level Energy Source awarded in 1976.  When he moved to Harvard, he continued the research in bone measurement techniques, consulting for Hologic, a leading manufacturer of DEXA bone densitometers.  He developed methods to evaluate image quality of computed tomography (CT) scanners and presented refresher courses at the Annual Meeting of RSNA on image quality of CT scanners.  He participated in the initial research that applied CT to study of the heart.  He has studied several novel x-ray detectors including: micro-channel plate x-ray image intensifiers and pressurized noble gas multi-wire counters.   His more recent research has investigated medical image perception.  He was particularly interested in the relationships between CT image quality measurements and the diagnostic performance of radiologists using CT images of the liver and lung.

        He is Chair of the Lung Density Biomarker Committee of Quantitative Imaging Biomarker Alliance (QIBA) of the RSNA.  The Lung Density Biomarker Committee is identifying best practices for quantitative CT measures of lung parenchymal density. The Committee is developing standard protocols based on current best practices.  Based on a meta-analysis of the literature, the Committee has determined the achievable repeatability and limits for detecting changes in parenchymal density.  The QIBA monitors and proposes research and testing of emerging and future methods to reduce radiation dose and improve quantitative accuracy.