Ehsan Samei

Ehsan Samei

Professor of Radiology

Professor in the Department of Physics (Secondary)

Member of the Duke Cancer Institute

Professor in the Department of Electrical and Computer Engineering (Secondary)

Office Location: 
2424 Erwin Road, Suite 302, Ravin Advanced Imaging Labs, Durham, NC 27705
Front Office Address: 
DUMC Box 2731, Durham, NC 27710
(919) 684-7852


Dr. Ehsan Samei, PhD, DABR, FAAPM, FSPIE, FAIMBE is a Persian-American medical physicist. He is a tenured Professor of Radiology, Medical Physics, Biomedical Engineering, Physics, and Electrical and Computer Engineering at Duke University. He serves as the Director of the Duke Medical Physics Graduate Program and the Director of the Clinical Imaging Physics Group. He is certified by the American Board of Radiology, and is a Fellow of the American Association of Physicists in Medicine (AAPM), the International Society of Optics and Phtonics (SPIE), and the American Institute of Biomedical Engineering. He is a Councilor of the National Council of Radiation Protection and Measurements (NCRP), and a Distinguished Investigator of the Academy of Radiology Research. He was the founder or co-founder of the Duke Medical Physics Program, the Duke Imaging Physics Residency Program, the Duke Clinical Imaging Physics Group, and the Society of Directors of Academic Medical Physics Programs (SDAMPP). He has held senior leadership positions in the AAPM, SPIE, SDAMPP, and RSNA. 

Dr. Samei’s interests and expertise include x-ray imaging, theoretical imaging models, simulation methods, and experimental techniques in medical image formation, analysis, assessment, and perception.  His current research includes methods to develop image quality and dose metrics that are clinically relevant and that can be used to design and utilize advanced imaging techniques towards optimum interpretive and quantitative performance. He further has an active interest in bridging the gap between scientific scholarship and clinical practice, in the meaningful realization of translational research, and in clinical processes that are informed by scientific evidence. Those include advanced imaging performance characterization, procedural optimization, and radiomics in retrospective clinical dose and quality analytics. He has mentored over 100 trainees (graduate and postgraduate). He has over 900 scientific publications including over 240 referred journal articles. He has been the recipient of 34 grants as Principle Investigator reflecting $13M of extramural funding.

Education & Training

  • Ph.D., University of Michigan, Ann Arbor 1997

  • M.E., University of Michigan, Ann Arbor 1995

Flynn, M. J., and E. Samei. “Experimental comparison of noise and resolution for 2k and 4k storage phosphor radiography systems.Med Phys, vol. 26, no. 8, Aug. 1999, pp. 1612–23. Pubmed, doi:10.1118/1.598656. Full Text

Samei, E., et al. “A PC-based patient-specific external dose calculation method for outpatient I-131 therapy.Journal of Nuclear Medicine, vol. 39, no. 5, May 1998, pp. 277P-277P.

Beute, G. H., et al. “Chest radiographic image quality: comparison of asymmetric screen-film, digital storage phosphor, and digital selenium drum systems--preliminary study.Radiographics, vol. 18, no. 3, May 1998, pp. 745–54. Pubmed, doi:10.1148/radiographics.18.3.9599395. Full Text

Samei, E., et al. “A method for measuring the presampled MTF of digital radiographic systems using an edge test device.Med Phys, vol. 25, no. 1, Jan. 1998, pp. 102–13. Pubmed, doi:10.1118/1.598165. Full Text

Samei, E., et al. “The effect of local background anatomical patterns on the detection of subtle lung nodules in chest radiographs.” Proceedings of Spie  the International Society for Optical Engineering, vol. 3340, Jan. 1998, pp. 44–54. Scopus, doi:10.1117/12.306182. Full Text

Samei, E. “The performance of digital x-ray imaging systems in detection of subtle lung nodules.” Medical Physics, vol. 25, no. 10, Jan. 1998, p. 2077. Scopus, doi:10.1118/1.598364. Full Text

Samei, E., and M. J. Flynn. “Physical measures of image quality in photostimulable phosphor radiographic systems.” Proceedings of Spie  the International Society for Optical Engineering, vol. 3032, Dec. 1997, pp. 328–38. Scopus, doi:10.1117/12.273999. Full Text

Samei, E., et al. “Simulation of subtle lung nodules in projection chest radiography.Radiology, vol. 202, no. 1, Jan. 1997, pp. 117–24. Pubmed, doi:10.1148/radiology.202.1.8988200. Full Text