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

Abadi, Ehsan, et al. “Effect of Iodine-based Contrast Material on Radiation Dose at CT.Radiology, vol. 285, no. 3, Dec. 2017, pp. 1053–54. Pubmed, doi:10.1148/radiol.2017171523. Full Text

Fu, Wanyi, et al. “Optimizing window settings for improved presentation of virtual monoenergetic images in dual-energy computed tomography.Med Phys, vol. 44, no. 11, Nov. 2017, pp. 5686–96. Pubmed, doi:10.1002/mp.12501. Full Text

Winslow, James, et al. “A method for characterizing and matching CT image quality across CT scanners from different manufacturers.Med Phys, vol. 44, no. 11, Nov. 2017, pp. 5705–17. Pubmed, doi:10.1002/mp.12554. Full Text

Abadi, Ehsan, et al. “Patient-specific quantification of image quality: An automated technique for measuring the distribution of organ Hounsfield units in clinical chest CT images.Med Phys, vol. 44, no. 9, Sept. 2017, pp. 4736–46. Pubmed, doi:10.1002/mp.12438. Full Text

Robins, Marthony, et al. “Techniques for virtual lung nodule insertion: volumetric and morphometric comparison of projection-based and image-based methods for quantitative CT.Phys Med Biol, vol. 62, no. 18, Aug. 2017, pp. 7280–99. Pubmed, doi:10.1088/1361-6560/aa83f8. Full Text

Samei, Ehsan, and Christoph Hoeschen. “Special Section Guest Editorial: Visions of Safety: Perspectives on Radiation Exposure and Risk in Medical Imaging.Journal of Medical Imaging (Bellingham, Wash.), vol. 4, no. 3, July 2017, p. 031201. Epmc, doi:10.1117/1.jmi.4.3.031201. Full Text

Pawlicki, Todd, et al. “Proposed changes to the American Association of Physicists in Medicine governance.J Appl Clin Med Phys, vol. 18, no. 4, July 2017, pp. 4–6. Pubmed, doi:10.1002/acm2.12124. Full Text

Samei, Ehsan, et al. “Size-based quality-informed framework for quantitative optimization of pediatric CT.J Med Imaging (Bellingham), vol. 4, no. 3, July 2017, p. 031209. Pubmed, doi:10.1117/1.JMI.4.3.031209. Full Text


Ria, F., et al. “From DRL to NRL: A First Step Toward Quality-Based Reference Level.” Medical Physics, vol. 6, no. 44, American Association of Physicists in Medicine, 2017, pp. 3315–3315.

Mann, S., et al. “Improved Patient Entrance DAP Estimates for Fluoroscopically-Guided Lumbosacral Epidural Injections.” Medical Physics, vol. 44, no. 6, WILEY, 2017, pp. 3120–21.

Wilson, J. M., et al. “Platform for MRI Quality Control, Automated Image Analysis, and Monitoring.” Medical Physics, vol. 44, no. 6, WILEY, 2017, pp. 3138–3138.

Fu, W., et al. “CT Dose in Pregnancy: Organ Dose and Fetal Dose Under Various Gestational Ages and Maternal Sizes.” Medical Physics, vol. 44, no. 6, WILEY, 2017, pp. 3314–3314.

Wilson, J. M., et al. “Empowering Future Clinical Leaders: Professionalism in Medical Physics Graduate Education.” Medical Physics, vol. 44, no. 6, WILEY, 2017, pp. 3067–3067.

Wells, J., and E. Samei. “Initial Investigation of a Vendor-Neutral Approach to Objective Patient Chest Image Quality Assessment.” Medical Physics, vol. 44, no. 6, WILEY, 2017, pp. 3266–3266.

Fu, W., et al. “Uncertainties in Convolution-Based Organ Dose Estimation in TubeCurrent Modulated CT.” Medical Physics, vol. 44, no. 6, WILEY, 2017, pp. 3301–3301.

Samei, Ehsan, et al. “Medical Physics 3.0 in Design.” Medical Physics, vol. 44, no. 6, WILEY, 2017, pp. 3231–32.

Hoye, J., et al. “A Smartphone Application for Organ Dose Estimation in CT, Tomosynthesis, and Radiography.” Medical Physics, vol. 44, no. 6, WILEY, 2017, pp. 3022–3022.