Barnes Gary


Gary T. Barnes, Ph.D., DABR, FAAPM, FACR

Professor Emeritus, Division of Physics and Engineering

Dr. Barnes is the immediate past head of the Radiologic Physics Section and oversees the physics courses given for radiology residents. He teaches the popular 4-month series of board review sessions for Senior residents in addition to several sections of the main physics courses. (Most year's resident classes score at or above the 90th percentile nationwide.) His research interests include image optimization and dose reduction in mammography, stimulable phosphors, and scatter reduction. He also develops new approaches to dual-energy imaging and computed radiography of the chest. Dr. Barnes is a two-time recipient of the Radiology Teacher of the Year Award and is a past president of the American Association of Physicists in Medicine.

Engagement in the Residency Programs

Dr. Barnes teaches many aspects of image production, detection, and image quality. As a consultant outside UAB, he takes our medical physics residents with him to perform CT, mammography, radiography, and fluoroscopy acceptance, annual, and accreditation testing with our medical physics residents. Dr. Barnes is a past president of AAPM.

Selected Publications, Posters, and Presentations

Johnson L, Yester M. Barnes G. “Optimal kVp for Image Quality and Noise in Iodine Contrast in Head CTA,” Med Phys 2012 39(6).

Barnes GT, Yester MV. Testing for Optimal Grid Choice in Automated Bedside Imaging. Presentation at AAPM Meeting, Anaheim, CA, July 26-30, 2009.

Gauntt DM, Barnes GT: BRAGA; An easy to use and accurate grid alignment system to control scatter and improve image quality in bedside radiography. Medical Imaging 2008, Proc of the SPIE 6913:69134W, 2008

Gauntt DM, Barnes GT: Grid line artifact formation: A comprehensive theory, Medical Physics 33(6): 1668-1677, June 2006.

Barnes GT, Brezovich IA: The intensity of scattered radiation in mammography. Radiology 126:243-247, 1978.

L. Johnson was a UAB postdoc/resident when this research was performed I. Brezovich was a graduate student when this research was performed.

The UAB Department of Radiology serves a pivotal and critical role in support of comprehensive patient care provided by the UAB Health System. 

Over 81 highly trained radiologists in every sub-specialty field form the foundation of diagnostic and therapeutic services are available to patients throughout the country. 


The UAB Department of Radiology has active research in clinical, translational and basic science disciplines. Our research includes external funding portfolios and collaborative research with UAB and regional investigators.


Our mission is to graduate well rounded, excellently trained radiologists capable of performing and interpreting a comprehensive range of radiologic procedures, who embrace the challenge of life-long learning in Radiology.

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