Ehsan Samei

Ehsan Samei

Professor of Radiology

Dr. Ehsan Samei, PhD, DABR, FAAPM, FSPIE is a tenured Professor of Radiology, Medical Physics, Biomedical Engineering, Physics, and Electrical and Computer Engineering at Duke University, where he also serves as the Director of Carl E. Ravin Advanced Imaging Laboratories and the founding Chief 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), and the International Society of Optical Engineering (SPIE). He was the founding Director of the Graduate Studies of the Duke Medical Physics Graduate Program, and the co-founder of the Society of Directors of Academic Medical Physics Programs (SDAMPP). He has held senior leadership positions in the AAPM, the SPIE, and SDAMPP. He is a Councilor of the National Council of Radiation Protection and Measurements (NCRP), and a Distinguished Investigator of the Academy of Radiology Research.

Dr. Samei’s interests and expertise include x-ray imaging, theoretical imaging models, simulation methods, and experimental techniques in medical image formation, analysis, assessment, display, 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 precise 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. While he works across most diagnostic imaging modalities, his main modalities of interest are CT and Tomosynthesis for breast, lung, and abdominal imaging applications. He has been the recipient of 29 extramural grants from the US government, private foundations, and medical industry, and has 700 scientific publications including 190 referred journal articles.

Appointments and Affiliations

  • Professor of Radiology
  • Professor in the Department of Physics
  • Professor of Biomedical Engineering
  • Member of the Duke Cancer Institute

Contact Information

Education

  • Ph.D. University of Michigan at Ann Arbor, 1997
  • M.E. University of Michigan at Ann Arbor, 1995

Specialties

Medical Imaging

Awards, Honors, and Distinctions

  • Fellow. International Society for Optics and Photonics. 2010
  • Fellows. American Association of Physicists in Medicine. 2009

Courses Taught

  • ECE 899: Special Readings in Electrical Engineering
  • MEDPHY 733: Clinical Practicum and Shadowing (Diagnostic Imaging)
  • MEDPHY 733K: Clinical Practicum and Shadowing (Diagnostic Imaging)
  • MEDPHY 792: Clinical Practicum and Shadowing (Diagnostic Imaging)

Representative Publications

  • Samei, E; Murphy, S; Christianson, O, DQE of wireless digital detectors: comparative performance with differing filtration schemes., Medical physics, vol 40 no. 8 (2013) [10.1118/1.4813298] [abs].
  • Samei, E; Li, X; Chen, B; Reiman, R, The effect of dose heterogeneity on radiation risk in medical imaging., Radiation Protection Dosimetry, vol 155 no. 1 (2013), pp. 42-58 [10.1093/rpd/ncs275] [abs].
  • Chen, B; Marin, D; Richard, S; Husarik, D; Nelson, R; Samei, E, Precision of iodine quantification in hepatic CT: effects of iterative reconstruction with various imaging parameters., AJR. American journal of roentgenology, vol 200 no. 5 (2013), pp. W475-W482 [10.2214/AJR.12.9658] [abs].
  • Segars, WP; Bond, J; Frush, J; Hon, S; Eckersley, C; Williams, CH; Feng, J; Tward, DJ; Ratnanather, JT; Miller, MI; Frush, D; Samei, E, Population of anatomically variable 4D XCAT adult phantoms for imaging research and optimization., Medical physics, vol 40 no. 4 (2013) [10.1118/1.4794178] [abs].
  • Wilson, JM; Christianson, OI; Richard, S; Samei, E, A methodology for image quality evaluation of advanced CT systems., Medical physics, vol 40 no. 3 (2013) [abs].
  • Solomon, JB; Li, X; Samei, E, Relating noise to image quality indicators in CT examinations with tube current modulation., AJR. American journal of roentgenology, vol 200 no. 3 (2013), pp. 592-600 [10.2214/AJR.12.8580] [abs].
  • Copple, C; Robertson, ID; Thrall, DE; Samei, E, Evaluation of two objective methods to optimize kVp and personnel exposure using a digital indirect flat panel detector and simulated veterinary patients., Veterinary Radiology & Ultrasound, vol 54 no. 1 (2013), pp. 9-16 [10.1111/j.1740-8261.2012.01989.x] [abs].
  • Li, X; Samei, E; Williams, CH; Segars, WP; Tward, DJ; Miller, MI; Ratnanather, JT; Paulson, EK; Frush, DP, Effects of protocol and obesity on dose conversion factors in adult body CT., Medical physics, vol 39 no. 11 (2012), pp. 6550-6571 [10.1118/1.4754584] [abs].
  • Christianson, O; Li, X; Frush, D; Samei, E, Automated size-specific CT dose monitoring program: assessing variability in CT dose., Medical physics, vol 39 no. 11 (2012), pp. 7131-7139 [10.1118/1.4761871] [abs].
  • Solomon, JB; Christianson, O; Samei, E, Quantitative comparison of noise texture across CT scanners from different manufacturers., Medical physics, vol 39 no. 10 (2012), pp. 6048-6055 [10.1118/1.4752209] [abs].
  • Pollard, BJ; Samei, E; Chawla, AS; Beam, C; Heyneman, LE; Koweek, LM; Martinez-Jimenez, S; Washington, L; Hashimoto, N; McAdams, HP, The effects of ambient lighting in chest radiology reading rooms., Journal of Digital Imaging, vol 25 no. 4 (2012), pp. 520-526 [10.1007/s10278-012-9459-5] [abs].
  • McCollough, CH; Chen, GH; Kalender, W; Leng, S; Samei, E; Taguchi, K; Wang, G; Yu, L; Pettigrew, RI, Achieving routine submillisievert CT scanning: report from the summit on management of radiation dose in CT., Radiology, vol 264 no. 2 (2012), pp. 567-580 [10.1148/radiol.12112265] [abs].
  • Richard, S; Husarik, DB; Yadava, G; Murphy, SN; Samei, E, Towards task-based assessment of CT performance: system and object MTF across different reconstruction algorithms., Medical physics, vol 39 no. 7 (2012), pp. 4115-4122 [10.1118/1.4725171] [abs].
  • Chen, B; Barnhart, H; Richard, S; Colsher, J; Amurao, M; Samei, E, Quantitative CT: technique dependence of volume estimation on pulmonary nodules., Physics in Medicine and Biology, vol 57 no. 5 (2012), pp. 1335-1348 [10.1088/0031-9155/57/5/1335] [abs].
  • Samei, E; Button, TM; Orton, CG, Point/Counterpoint: The 2014 initiative can have potentially unintended negative consequences for medical physics in diagnostic imaging and nuclear medicine., Medical physics, vol 39 no. 3 (2012), pp. 1167-1168 [10.1118/1.3658741] [abs].
  • Samei, E; Majdi-Nasab, N; Dobbins, JT; McAdams, HP, Biplane correlation imaging: a feasibility study based on phantom and human data., Journal of Digital Imaging, vol 25 no. 1 (2012), pp. 137-147 [10.1007/s10278-011-9392-z] [abs].
  • Samei, E; Anthony Seibert, J, The tenuous state of clinical medical physics in diagnostic imaging., Medical physics, vol 38 no. 12 (2011), pp. iii-iv [10.1118/1.3664002] [abs].
  • Wang, CL; Chea, YW; Boll, DT; Samei, E; Neville, AM; Dale, BM; Merkle, EM, Effect of gadolinium chelate contrast agents on diffusion weighted MR imaging of the liver, spleen, pancreas and kidney at 3 T., European Journal of Radiology, vol 80 no. 2 (2011), pp. e1-e7 [10.1016/j.ejrad.2010.05.019] [abs].
  • D'Alessandro, B; Madsen, M; Samei, E; Li, X; Wooi-Tan, J; Berbaum, KS; Schartz, K; Caldwell, R; Zuckier, LS, Synthetic positron emission tomography-computed tomography images for use in perceptual studies., Seminars in Nuclear Medicine, vol 41 no. 6 (2011), pp. 437-448 [10.1053/j.semnuclmed.2011.06.007] [abs].
  • Samei, E; Saunders, RS, Dual-energy contrast-enhanced breast tomosynthesis: optimization of beam quality for dose and image quality., Physics in Medicine and Biology, vol 56 no. 19 (2011), pp. 6359-6378 [10.1088/0031-9155/56/19/013] [abs].
  • Samei, E; Ranger, NT; Dobbins, JT; Ravin, CE, Effective dose efficiency: an application-specific metric of quality and dose for digital radiography., Physics in Medicine and Biology, vol 56 no. 16 (2011), pp. 5099-5118 [10.1088/0031-9155/56/16/002] [abs].
  • Li, X; Samei, E; Segars, WP; Sturgeon, GM; Colsher, JG; Frush, DP, Patient-specific radiation dose and cancer risk for pediatric chest CT., Radiology, vol 259 no. 3 (2011), pp. 862-874 [10.1148/radiol.11101900] [abs].
  • Chen, B; Shorey, J; Saunders, RS; Richard, S; Thompson, J; Nolte, LW; Samei, E, An anthropomorphic breast model for breast imaging simulation and optimization., Academic Radiology, vol 18 no. 5 (2011), pp. 536-546 [10.1016/j.acra.2010.11.009] [abs].
  • Li, X; Samei, E; Barnhart, HX; Gaca, AM; Hollingsworth, CL; Maxfield, CM; Carrico, CW; Colsher, JG; Frush, DP, Lung nodule detection in pediatric chest CT: quantitative relationship between image quality and radiologist performance., Medical physics, vol 38 no. 5 (2011), pp. 2609-2618 [10.1118/1.3582975] [abs].
  • Webb, LJ; Samei, E; Lo, JY; Baker, JA; Ghate, SV; Kim, C; Soo, MS; Walsh, R, Comparative performance of multiview stereoscopic and mammographic display modalities for breast lesion detection., Medical physics, vol 38 no. 4 (2011), pp. 1972-1980 [10.1118/1.3562901] [abs].
  • Li, X; Samei, E; Segars, WP; Sturgeon, GM; Colsher, JG; Toncheva, G; Yoshizumi, TT; Frush, DP, Patient-specific radiation dose and cancer risk estimation in CT: part II. Application to patients., Medical physics, vol 38 no. 1 (2011), pp. 408-419 [10.1118/1.3515864] [abs].
  • Li, X; Samei, E; Segars, WP; Sturgeon, GM; Colsher, JG; Toncheva, G; Yoshizumi, TT; Frush, DP, Patient-specific radiation dose and cancer risk estimation in CT: part I. development and validation of a Monte Carlo program., Medical physics, vol 38 no. 1 (2011), pp. 397-407 [10.1118/1.3515839] [abs].
  • Richard, S; Samei, E, Quantitative breast tomosynthesis: from detectability to estimability., Medical physics, vol 37 no. 12 (2010), pp. 6157-6165 [10.1118/1.3501883] [abs].
  • Marin, D; Nelson, RC; Barnhart, H; Schindera, ST; Ho, LM; Jaffe, TA; Yoshizumi, TT; Youngblood, R; Samei, E, Detection of pancreatic tumors, image quality, and radiation dose during the pancreatic parenchymal phase: effect of a low-tube-voltage, high-tube-current CT technique--preliminary results., Radiology, vol 256 no. 2 (2010), pp. 450-459 [10.1148/radiol.10091819] [abs].
  • Richard, S; Samei, E, Quantitative imaging in breast tomosynthesis and CT: comparison of detection and estimation task performance., Medical physics, vol 37 no. 6 (2010), pp. 2627-2637 [10.1118/1.3429025] [abs].
  • Shafer, CM; Samei, E; Lo, JY, The quantitative potential for breast tomosynthesis imaging., Medical physics, vol 37 no. 3 (2010), pp. 1004-1016 [10.1118/1.3285038] [abs].
  • Ranger, NT; Lo, JY; Samei, E, A technique optimization protocol and the potential for dose reduction in digital mammography., Medical physics, vol 37 no. 3 (2010), pp. 962-969 [10.1118/1.3276732] [abs].
  • Fleck, MS; Samei, E; Mitroff, SR, Generalized "satisfaction of search": adverse influences on dual-target search accuracy., Journal of Experimental Psychology: Applied, vol 16 no. 1 (2010), pp. 60-71 [10.1037/a0018629] [abs].
  • Marin, D; Nelson, RC; Schindera, ST; Richard, S; Youngblood, RS; Yoshizumi, TT; Samei, E, Low-tube-voltage, high-tube-current multidetector abdominal CT: improved image quality and decreased radiation dose with adaptive statistical iterative reconstruction algorithm--initial clinical experience., Radiology, vol 254 no. 1 (2010), pp. 145-153 [10.1148/radiol.09090094] [abs].
  • Chawla, AS; Lo, JY; Baker, JA; Samei, E, Optimized image acquisition for breast tomosynthesis in projection and reconstruction space., Medical physics, vol 36 no. 11 (2009), pp. 4859-4869 [10.1118/1.3231814] [abs].
  • Samei, E; Ranger, NT; MacKenzie, A; Honey, ID; Dobbins, JT; Ravin, CE, Effective DQE (eDQE) and speed of digital radiographic systems: an experimental methodology., Medical physics, vol 36 no. 8 (2009), pp. 3806-3817 [10.1118/1.3171690] [abs].
  • Shepard, SJ; Wang, J; Flynn, M; Gingold, E; Goldman, L; Krugh, K; Leong, DL; Mah, E; Ogden, K; Peck, D; Samei, E; Wang, J; Willis, CE, An exposure indicator for digital radiography: AAPM Task Group 116 (executive summary)., Medical physics, vol 36 no. 7 (2009), pp. 2898-2914 [10.1118/1.3121505] [abs].
  • Li, X; Samei, E; DeLong, DM; Jones, RP; Gaca, AM; Hollingsworth, CL; Maxfield, CM; Colsher, JG; Frush, DP, Pediatric MDCT: towards assessing the diagnostic influence of dose reduction on the detection of small lung nodules., Academic Radiology, vol 16 no. 7 (2009), pp. 872-880 [10.1016/j.acra.2009.01.028] [abs].
  • Saunders, RS; Samei, E; Lo, JY; Baker, JA, Can compression be reduced for breast tomosynthesis? Monte carlo study on mass and microcalcification conspicuity in tomosynthesis., Radiology, vol 251 no. 3 (2009), pp. 673-682 [10.1148/radiol.2521081278] [abs].
  • Marin, D; Nelson, RC; Samei, E; Paulson, EK; Ho, LM; Boll, DT; DeLong, DM; Yoshizumi, TT; Schindera, ST, Hypervascular liver tumors: low tube voltage, high tube current multidetector CT during late hepatic arterial phase for detection--initial clinical experience., Radiology, vol 251 no. 3 (2009), pp. 771-779 [10.1148/radiol.2513081330] [abs].
  • Li, X; Samei, E; Delong, DM; Jones, RP; Gaca, AM; Hollingsworth, CL; Maxfield, CM; Carrico, CW; Frush, DP, Three-dimensional simulation of lung nodules for paediatric multidetector array CT., British Journal of Radiology, vol 82 no. 977 (2009), pp. 401-411 [10.1259/bjr/51749983] [abs].
  • Chawla, AS; Saunders, RS; Singh, S; Lo, JY; Samei, E, Towards optimized acquisition scheme for multiprojection correlation imaging of breast cancer., Academic Radiology, vol 16 no. 4 (2009), pp. 456-463 [10.1016/j.acra.2008.09.013] [abs].
  • Pollard, BJ; Samei, E; Chawla, AS; Baker, J; Ghate, S; Kim, C; Soo, MS; Hashimoto, N, The influence of increased ambient lighting on mass detection in mammograms., Academic Radiology, vol 16 no. 3 (2009), pp. 299-304 [10.1016/j.acra.2008.08.017] [abs].
  • Li, X; Samei, E, Comparison of patient size-based methods for estimating quantum noise in CT images of the lung., Medical physics, vol 36 no. 2 (2009), pp. 541-546 [10.1118/1.3058482] [abs].
  • Castella, C; Eckstein, MP; Abbey, CK; Kinkel, K; Verdun, FR; Saunders, RS; Samei, E; Bochud, FO, Mass detection on mammograms: influence of signal shape uncertainty on human and model observers., Journal of the Optical Society of America A, vol 26 no. 2 (2009), pp. 425-436 [abs].
  • Samei, E; Saunders, RS; Badea, CT; Ghaghada, KB; Hedlund, LW; Qi, Y; Yuan, H; Bentley, RC; Mukundan, S, Micro-CT imaging of breast tumors in rodents using a liposomal, nanoparticle contrast agent., International journal of nanomedicine, vol 4 (2009), pp. 277-282 [abs].
  • Li, X; Samei, E; Segars, WP; Sturgeon, GM; Colsher, JG; Frush, DP, Patient-specific dose estimation for pediatric chest CT., Medical physics, vol 35 no. 12 (2008), pp. 5821-5828 [10.1118/1.3026593] [abs].
  • Samei, E; Ranger, NT; MacKenzie, A; Honey, ID; Dobbins, JT; Ravin, CE, Detector or system? Extending the concept of detective quantum efficiency to characterize the performance of digital radiographic imaging systems., Radiology, vol 249 no. 3 (2008), pp. 926-937 [10.1148/radiol.2492071734] [abs].
  • Saunders, RS; Samei, E, The effect of breast compression on mass conspicuity in digital mammography., Medical physics, vol 35 no. 10 (2008), pp. 4464-4473 [10.1118/1.2977600] [abs].
  • Singh, S; Tourassi, GD; Baker, JA; Samei, E; Lo, JY, Automated breast mass detection in 3D reconstructed tomosynthesis volumes: a featureless approach., Medical physics, vol 35 no. 8 (2008), pp. 3626-3636 [10.1118/1.2953562] [abs].
  • Fetterly, KA; Blume, HR; Flynn, MJ; Samei, E, Introduction to grayscale calibration and related aspects of medical imaging grade liquid crystal displays., Journal of Digital Imaging, vol 21 no. 2 (2008), pp. 193-207 [10.1007/s10278-007-9022-y] [abs].
  • Pollard, BJ; Chawla, AS; Delong, DM; Hashimoto, N; Samei, E, Object detectability at increased ambient lighting conditions., Medical physics, vol 35 no. 6 (2008), pp. 2204-2213 [10.1118/1.2907566] [abs].
  • Williams, MB; Raghunathan, P; More, MJ; Seibert, JA; Kwan, A; Lo, JY; Samei, E; Ranger, NT; Fajardo, LL; McGruder, A; McGruder, SM; Maidment, AD; Yaffe, MJ; Bloomquist, A; Mawdsley, GE, Optimization of exposure parameters in full field digital mammography., Medical physics, vol 35 no. 6 (2008), pp. 2414-2423 [10.1118/1.2912177] [abs].
  • Samei, E; Ranger, NT; Delong, DM, A comparative contrast-detail study of five medical displays., Medical physics, vol 35 no. 4 (2008), pp. 1358-1364 [10.1118/1.2868780] [abs].
  • Chawla, AS; Samei, E; Saunders, RS; Lo, JY; Baker, JA, A mathematical model platform for optimizing a multiprojection breast imaging system., Medical physics, vol 35 no. 4 (2008), pp. 1337-1345 [10.1118/1.2885367] [abs].
  • Schindera, ST; Nelson, RC; Mukundan, S; Paulson, EK; Jaffe, TA; Miller, CM; DeLong, DM; Kawaji, K; Yoshizumi, TT; Samei, E, Hypervascular liver tumors: low tube voltage, high tube current multi-detector row CT for enhanced detection--phantom study., Radiology, vol 246 no. 1 (2008), pp. 125-132 [10.1148/radiol.2461070307] [abs].
  • Saunders, RS; Baker, JA; Delong, DM; Johnson, JP; Samei, E, Does image quality matter? Impact of resolution and noise on mammographic task performance., Medical physics, vol 34 no. 10 (2007), pp. 3971-3981 [10.1118/1.2776253] [abs].
  • Chawla, AS; Samei, E; Saunders, R; Abbey, C; Delong, D, Effect of dose reduction on the detection of mammographic lesions: a mathematical observer model analysis., Medical physics, vol 34 no. 8 (2007), pp. 3385-3398 [10.1118/1.2756607] [abs].
  • Ranger, NT; Samei, E; Dobbins, JT; Ravin, CE, Assessment of detective quantum efficiency: intercomparison of a recently introduced international standard with prior methods., Radiology, vol 243 no. 3 (2007), pp. 785-795 [10.1148/radiol.2433060485] [abs].
  • Samei, E; Poolla, A; Ulissey, MJ; Lewin, JM, Digital mammography: comparative performance of color LCD and monochrome CRT displays., Academic Radiology, vol 14 no. 5 (2007), pp. 539-546 [10.1016/j.acra.2007.01.022] [abs].
  • Samei, E; Saunders, RS; Baker, JA; Delong, DM, Digital mammography: effects of reduced radiation dose on diagnostic performance., Radiology, vol 243 no. 2 (2007), pp. 396-404 [10.1148/radiol.2432061065] [abs].
  • Samei, E; Stebbins, SA; Dobbins, JT; McAdams, HP; Lo, JY, Multiprojection correlation imaging for improved detection of pulmonary nodules., AJR. American journal of roentgenology, vol 188 no. 5 (2007), pp. 1239-1245 [10.2214/AJR.06.0843] [abs].
  • Badea, CT; Hedlund, LW; De Lin, M; Mackel, JS; Samei, E; Johnson, GA, Tomographic digital subtraction angiography for lung perfusion estimation in rodents., Medical physics, vol 34 no. 5 (2007), pp. 1546-1555 [abs].
  • Ruschin, M; Timberg, P; Båth, M; Hemdal, B; Svahn, T; Saunders, RS; Samei, E; Andersson, I; Mattsson, S; Chakrabort, DP; Tingber, A, Dose dependence of mass and microcalcification detection in digital mammography: free response human observer studies., Medical physics, vol 34 no. 2 (2007), pp. 400-407 [10.1118/1.2405324] [abs].
  • Chawla, AS; Samei, E, Ambient illumination revisited: a new adaptation-based approach for optimizing medical imaging reading environments., Medical physics, vol 34 no. 1 (2007), pp. 81-90 [10.1118/1.2402583] [abs].
  • Saunders, RS; Samei, E, Improving mammographic decision accuracy by incorporating observer ratings with interpretation time., British Journal of Radiology, vol 79 Spec No 2 (2006), pp. S117-S122 [10.1259/bjr/96931332] [abs].
  • McAdams, HP; Samei, E; Dobbins, J; Tourassi, GD; Ravin, CE, Recent advances in chest radiography., Radiology, vol 241 no. 3 (2006), pp. 663-683 [10.1148/radiol.2413051535] [abs].
  • Saunders, RS; Samei, E; Baker, J; Delong, D; Soo, MS; Walsh, R; Pisano, E; Kuzmiak, CM; Pavic, D, Comparison of LCD and CRT displays based on efficacy for digital mammography., Academic Radiology, vol 13 no. 11 (2006), pp. 1317-1326 [10.1016/j.acra.2006.07.017] [abs].
  • Lin, MD; Samei, E; Badea, CT; Yoshizumi, TT; Johnson, GA, Optimized radiographic spectra for small animal digital subtraction angiography., Medical physics, vol 33 no. 11 (2006), pp. 4249-4257 [10.1118/1.2356646] [abs].
  • Badano, A; Schneider, S; Samei, E, Visual assessment of angular response in medical liquid crystal displays., Journal of Digital Imaging, vol 19 no. 3 (2006), pp. 240-248 [10.1007/s10278-006-0633-5] [abs].
  • Siegel, E; Krupinski, E; Samei, E; Flynn, M; Andriole, K; Erickson, B; Thomas, J; Badano, A; Seibert, JA; Pisano, ED, Digital mammography image quality: image display., Journal of the American College of Radiology, vol 3 no. 8 (2006), pp. 615-627 [10.1016/j.jacr.2006.03.007] [abs].
  • Saunders, R; Samei, E; Baker, J; Delong, D, Simulation of mammographic lesions., Academic Radiology, vol 13 no. 7 (2006), pp. 860-870 [10.1016/j.acra.2006.03.015] [abs].
  • Borasi, G; Samei, E; Bertolini, M; Nitrosi, A; Tassoni, D, Contrast-detail analysis of three flat panel detectors for digital radiography., Medical physics, vol 33 no. 6 (2006), pp. 1707-1719 [10.1118/1.2191014] [abs].
  • Dobbins, JT; Samei, E; Ranger, NT; Chen, Y, Intercomparison of methods for image quality characterization. II. Noise power spectrum., Medical physics, vol 33 no. 5 (2006), pp. 1466-1475 [10.1118/1.2188819] [abs].
  • Samei, E; Ranger, NT; Dobbins, JT; Chen, Y, Intercomparison of methods for image quality characterization. I. Modulation transfer function., Medical physics, vol 33 no. 5 (2006), pp. 1454-1465 [10.1118/1.2188816] [abs].
  • Boyce, SJ; Samei, E, Imaging properties of digital magnification radiography., Medical physics, vol 33 no. 4 (2006), pp. 984-996 [10.1118/1.2174133] [abs].
  • Samei, E; Wright, SL, Viewing angle performance of medical liquid crystal displays., Medical physics, vol 33 no. 3 (2006), pp. 645-654 [10.1118/1.2168430] [abs].
  • Hoe, CL; Samei, E; Frush, DP; Delong, DM, Simulation of liver lesions for pediatric CT., Radiology, vol 238 no. 2 (2006), pp. 699-705 [10.1148/radiol.2381050477] [abs].
  • Saunders, RS; Samei, E, Resolution and noise measurements of five CRT and LCD medical displays., Medical physics, vol 33 no. 2 (2006), pp. 308-319 [10.1118/1.2150777] [abs].
  • McKinley, RL; Tornai, MP; Brzymialkiewicz, C; Madhav, P; Samei, E; Bowsher, JE, Analysis of a novel offset cone-beam computed mammotomography system geometry for accomodating various breast sizes., Physica Medica, vol 21 Suppl 1 (2006), pp. 48-55 [10.1016/S1120-1797(06)80024-4] [abs].
  • Samei, E; Buhr, E; Granfors, P; Vandenbroucke, D; Wang, X, Comparison of edge analysis techniques for the determination of the MTF of digital radiographic systems., Physics in Medicine and Biology, vol 50 no. 15 (2005), pp. 3613-3625 [10.1088/0031-9155/50/15/009] [abs].
  • Ranger, NT; Samei, E; Dobbins, JT; Ravin, CE, Measurement of the detective quantum efficiency in digital detectors consistent with the IEC 62220-1 standard: practical considerations regarding the choice of filter material., Medical physics, vol 32 no. 7 (2005), pp. 2305-2311 [10.1118/1.1929187] [abs].
  • Samei, E; Lo, JY; Yoshizumi, TT; Jesneck, JL; Dobbins, JT; Floyd, CE; McAdams, HP; Ravin, CE, Comparative scatter and dose performance of slot-scan and full-field digital chest radiography systems., Radiology, vol 235 no. 3 (2005), pp. 940-949 [10.1148/radiol.2353040516] [abs].
  • Samei, E; Badano, A; Chakraborty, D; Compton, K; Cornelius, C; Corrigan, K; Flynn, MJ; Hemminger, B; Hangiandreou, N; Johnson, J; Moxley-Stevens, DM; Pavlicek, W; Roehrig, H; Rutz, L; Shepard, J; Uzenoff, RA; Wang, J; Willis, CE; AAPM TG18, , Assessment of display performance for medical imaging systems: executive summary of AAPM TG18 report., Medical physics, vol 32 no. 4 (2005), pp. 1205-1225 [10.1118/1.1861159] [abs].
  • Samei, E, AAPM/RSNA physics tutorial for residents: technological and psychophysical considerations for digital mammographic displays., Radiographics : a review publication of the Radiological Society of North America, Inc, vol 25 no. 2 (2005), pp. 491-501 [10.1148/rg.252045185] [abs].
  • Saunders, RS; Samei, E; Jesneck, JL; Lo, JY, Physical characterization of a prototype selenium-based full field digital mammography detector., Medical physics, vol 32 no. 2 (2005), pp. 588-599 [10.1118/1.1855033] [abs].
  • Samei, E; Dobbins, JT; Lo, JY; Tornai, MP, A framework for optimising the radiographic technique in digital X-ray imaging., Radiation Protection Dosimetry, vol 114 no. 1-3 (2005), pp. 220-229 [10.1093/rpd/nch562] [abs].
  • Samei, E; Rowberg, A; Avraham, E; Cornelius, C, Toward clinically relevant standardization of image quality., Journal of Digital Imaging, vol 17 no. 4 (2004), pp. 271-278 [10.1007/s10278-004-1031-5] [abs].
  • Samei, E; Wright, SL, Luminance and contrast performance of liquid crystal displays for mammographic applications., Technology in cancer research & treatment, vol 3 no. 5 (2004), pp. 429-436 [abs].
  • Samei, E; Saunders, RS; Lo, JY; Dobbins, JT; Jesneck, JL; Floyd, CE; Ravin, CE, Fundamental imaging characteristics of a slot-scan digital chest radiographic system., Medical physics, vol 31 no. 9 (2004), pp. 2687-2698 [10.1118/1.1783531] [abs].
  • Neitzel, U; Günther-Kohfahl, S; Borasi, G; Samei, E, Determination of the detective quantum efficiency of a digital x-ray detector: comparison of three evaluations using a common image data set., Medical physics, vol 31 no. 8 (2004), pp. 2205-2211 [10.1118/1.1766421] [abs].
  • Jung, H; Kim, HJ; Kang, WS; Yoo, SK; Fujioka, K; Hasegawa, M; Samei, E, Assessment of flat panel LCD primary class display performance based on AAPM TG 18 acceptance protocol., Medical physics, vol 31 no. 7 (2004), pp. 2155-2164 [10.1118/1.1764946] [abs].
  • Saunders, RS; Samei, E; Hoeschen, C, Impact of resolution and noise characteristics of digital radiographic detectors on the detectability of lung nodules., Medical physics, vol 31 no. 6 (2004), pp. 1603-1613 [10.1118/1.1753112] [abs].
  • McKinley, RL; Tornai, MP; Samei, E; Bradshaw, ML, Simulation study of a quasi-monochromatic beam for x-ray computed mammotomography., Medical physics, vol 31 no. 4 (2004), pp. 800-813 [10.1118/1.1668371] [abs].
  • Samei, E; Seibert, JA; Andriole, K; Badano, A; Crawford, J; Reiner, B; Flynn, MJ; Chang, P, AAPM/RSNA tutorial on equipment selection: PACS equipment overview: general guidelines for purchasing and acceptance testing of PACS equipment., Radiographics : a review publication of the Radiological Society of North America, Inc, vol 24 no. 1 (2004), pp. 313-334 [10.1148/rg.241035137] [abs].
  • Turner, SR; Samei, E; Hertzberg, BS; DeLong, DM; Vargas-Voracek, R; Singer, A; Maynor, CH; Kliewer, MA, Sonography of fetal choroid plexus cysts: detection depends on cyst size and gestational age., Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine, vol 22 no. 11 (2003), pp. 1219-1227 [abs].
  • Saunders, RS; Samei, E, A method for modifying the image quality parameters of digital radiographic images., Medical physics, vol 30 no. 11 (2003), pp. 3006-3017 [10.1118/1.1621870] [abs].
  • Samei, E; Flynn, MJ; Peterson, E; Eyler, WR, Subtle lung nodules: influence of local anatomic variations on detection., Radiology, vol 228 no. 1 (2003), pp. 76-84 [10.1148/radiol.2273020509] [abs].
  • Samei, E, Image quality in two phosphor-based flat panel digital radiographic detectors., Medical physics, vol 30 no. 7 (2003), pp. 1747-1757 [10.1118/1.1578772] [abs].
  • Samei, E; Flynn, MJ, An experimental comparison of detector performance for direct and indirect digital radiography systems., Medical physics, vol 30 no. 4 (2003), pp. 608-622 [10.1118/1.1561285] [abs].
  • Samei, E; Hill, JG; Frey, GD; Southgate, WM; Mah, E; Delong, D, Evaluation of a flat panel digital radiographic system for low-dose portable imaging of neonates., Medical physics, vol 30 no. 4 (2003), pp. 601-607 [10.1118/1.1556611] [abs].
  • Dobbins, JT; Samei, E; Chotas, HG; Warp, RJ; Baydush, AH; Floyd, CE; Ravin, CE, Chest radiography: optimization of X-ray spectrum for cesium iodide-amorphous silicon flat-panel detector., Radiology, vol 226 no. 1 (2003), pp. 221-230 [10.1148/radiol.2261012023] [abs].
  • Samei, E; Flynn, MJ, An experimental comparison of detector performance for computed radiography systems., Medical physics, vol 29 no. 4 (2002), pp. 447-459 [10.1118/1.1449873] [abs].
  • Samei, E; Seibert, JA; Willis, CE; Flynn, MJ; Mah, E; Junck, KL, Performance evaluation of computed radiography systems., Medical physics, vol 28 no. 3 (2001), pp. 361-371 [10.1118/1.1350586] [abs].
  • Mah, E; Samei, E; Peck, DJ, Evaluation of a quality control phantom for digital chest radiography., Journal of applied clinical medical physics / American College of Medical Physics, vol 2 no. 2 (2001), pp. 90-101 [10.1120/1.1364176] [abs].
  • Ryan, MT; Spicer, KM; Frei-Lahr, D; Samei, E; Frey, GD; Hargrove, H; Bloodworth, G, Health physics consequences of out-patient treatment of non-Hodgkin's lymphoma with 131I-radiolabeled anti-B1 antibody., Health Physics, vol 79 no. 5 Suppl (2000), pp. S52-S55 [abs].
  • Kearfott, KJ; Han, S; Wagner, EC; Samei, E; Wang, CK, Numerical simulation of a TLD pulsed laser-heating scheme for determination of shallow dose and deep dose in low-LET radiation fields., Applied Radiation and Isotopes, vol 52 no. 6 (2000), pp. 1419-1429 [abs].
  • Samei, E; Flynn, MJ; Eyler, WR, Detection of subtle lung nodules: relative influence of quantum and anatomic noise on chest radiographs., Radiology, vol 213 no. 3 (1999), pp. 727-734 [10.1148/radiology.213.3.r99dc19727] [abs].
  • Flynn, MJ; Samei, E, Experimental comparison of noise and resolution for 2k and 4k storage phosphor radiography systems., Medical physics, vol 26 no. 8 (1999), pp. 1612-1623 [10.1118/1.598656] [abs].
  • Beute, GH; Flynn, MJ; Eyler, WR; Samei, E; Spizarny, DL; Zylak, CJ, Chest radiographic image quality: comparison of asymmetric screen-film, digital storage phosphor, and digital selenium drum systems--preliminary study., Radiographics : a review publication of the Radiological Society of North America, Inc, vol 18 no. 3 (1998), pp. 745-754 [10.1148/radiographics.18.3.9599395] [abs].
  • Samei, E; Flynn, MJ; Reimann, DA, A method for measuring the presampled MTF of digital radiographic systems using an edge test device., Medical physics, vol 25 no. 1 (1998), pp. 102-113 [10.1118/1.598165] [abs].
  • Samei, E; Flynn, MJ; Eyler, WR, Simulation of subtle lung nodules in projection chest radiography., Radiology, vol 202 no. 1 (1997), pp. 117-124 [10.1148/radiology.202.1.8988200] [abs].
  • Samei, E; Kearfott, KJ, A limited bibliography of the Federal Government-funded human radiation experiments., Health Physics, vol 69 no. 6 (1995), pp. 885-891 [abs].
  • Kearfott, KJ; Han, S; McMahan, KL; Samei, E, Sensitivity of a mixed field dosimetry algorithm to uncertainties in thermoluminescent element readings., Health Physics, vol 68 no. 3 (1995), pp. 340-349 [abs].