• English

  • Chinese


Graduate Degree

  • University of Oklahoma , 2009 , Norman , OK


Dr. Da Zhang earned his PhD in Electrical and Computer Engineering from the University of Oklahoma. He received clinical training in diagnostic medical physics at Massachusetts General Hospital for five years and became a board-certified medical physicist there. Dr. Zhang spent the next six years of his career at the Beth Israel Deaconess Medical Center and was promoted to Assistant Professor of Radiology at Harvard Medical School. Dr Zhang joined Boston Children’s Hospital Radiology in 2020, his duty includes overseeing the operations of the diagnostic medical physics team in the Radiology department, as well as directing the joint diagnostic and nuclear medicine medical physics residency program. His clinical duties include medical imaging physics coverage for the radiology clinics, as well as training and consultation for physicians and clinical staff. His team is responsible for optimizing equipment performance, organizing quality control, control of radiation hazards, as well as the research and development in imaging physics and radiology informatics.


  • American Board of Radiology, Diagnostic Medical Physics


Publications powered by Harvard Catalyst Profiles

  1. Comparative Dose of Contrast-Enhanced Spectral Mammography (CESM), Digital Mammography, and Digital Breast Tomosynthesis. AJR Am J Roentgenol. 2018 10; 211(4):839-846. View abstract
  2. A new method for CT dose estimation by determining patient water equivalent diameter from localizer radiographs: Geometric transformation and calibration methods using readily available phantoms. Med Phys. 2018 Jul; 45(7):3371-3378. View abstract
  3. Point Organ Radiation Dose in Abdominal CT: Effect of Patient Off-Centering in an Experimental Human Cadaver Study. Radiat Prot Dosimetry. 2017 Aug 01; 175(4):440-449. View abstract
  4. Metal implants on CT: comparison of iterative reconstruction algorithms for reduction of metal artifacts with single energy and spectral CT scanning in a phantom model. Abdom Radiol (NY). 2017 03; 42(3):742-748. View abstract
  5. Comparison of Measured and Estimated CT Organ Doses for Modulated and Fixed Tube Current:: A Human Cadaver Study. Acad Radiol. 2016 May; 23(5):634-42. View abstract
  6. A new technique to characterize CT scanner bow-tie filter attenuation and applications in human cadaver dosimetry simulations. Med Phys. 2015 Nov; 42(11):6274-82. View abstract
  7. CT dose equilibration and energy absorption in polyethylene cylinders with diameters from 6 to 55 cm. Med Phys. 2015 Jun; 42(6):2882-91. View abstract
  8. Data-driven CT protocol review and management—experience from a large academic hospital. J Am Coll Radiol. 2015 Mar; 12(3):267-72. View abstract
  9. Electronic cleansing in fecal-tagging dual-energy CT colonography based on material decomposition and virtual colon tagging. IEEE Trans Biomed Eng. 2015 Feb; 62(2):754-65. View abstract
  10. Longitudinal dose distribution and energy absorption in PMMA and water cylinders undergoing CT scans. Med Phys. 2014 Oct; 41(10):101912. View abstract
  11. In vitro dose measurements in a human cadaver with abdomen/pelvis CT scans. Med Phys. 2014 Sep; 41(9):091911. View abstract
  12. A study of the short- to long-phantom dose ratios for CT scanning without table translation. Med Phys. 2014 Sep; 41(9):091912. View abstract
  13. Novel lead-free drape applied to the X-ray detector protects against scatter radiation in the angiography suite. J Vasc Interv Radiol. 2014 Aug; 25(8):1200-8. View abstract
  14. A parameterization method and application in breast tomosynthesis dosimetry. Med Phys. 2013 Sep; 40(9):092105. View abstract
  15. Calculations of two new dose metrics proposed by AAPM Task Group 111 using the measurements with standard CT dosimetry phantoms. Med Phys. 2013 Aug; 40(8):081914. View abstract
  16. A method to acquire CT organ dose map using OSL dosimeters and ATOM anthropomorphic phantoms. Med Phys. 2013 Aug; 40(8):081918. View abstract
  17. Workload and transmission data for the installation of a digital breast tomosynthesis system. Med Phys. 2013 Jun; 40(6):063901. View abstract
  18. Monte Carlo assessment of CT dose equilibration in PMMA and water cylinders with diameters from 6 to 55 cm. Med Phys. 2013 Mar; 40(3):031903. View abstract
  19. Dual-energy index value of luminal air in fecal-tagging computed tomography colonography: findings and impact on electronic cleansing. J Comput Assist Tomogr. 2013 Mar-Apr; 37(2):183-94. View abstract
  20. Image performance evaluation of a cone beam O-arm imaging system. J Xray Sci Technol. 2013; 21(3):373-80. View abstract
  21. Virtual monochromatic reconstruction of dual-energy unenhanced head CT at 65-75 keV maximizes image quality compared with conventional polychromatic CT. Radiology. 2013 Jan; 266(1):318-25. View abstract
  22. Equations for CT dose calculations on axial lines based on the principle of symmetry. Med Phys. 2012 Sep; 39(9):5347-52. View abstract
  23. Transmission of broad W/Rh and W/Al (target/filter) x-ray beams operated at 25-49 kVp through common shielding materials. Med Phys. 2012 Jul; 39(7):4132-8. View abstract
  24. X-ray spectral measurements for tungsten-anode from 20 to 49 kVp on a digital breast tomosynthesis system. Med Phys. 2012 Jun; 39(6):3493-500. View abstract
  25. Estimation of the weighted CTDI(8) for multislice CT examinations. Med Phys. 2012 Feb; 39(2):901-5. View abstract
  26. Cranial CT with adaptive statistical iterative reconstruction: improved image quality with concomitant radiation dose reduction. AJNR Am J Neuroradiol. 2012 Apr; 33(4):609-15. View abstract
  27. A practical approach to estimate the weighted CT dose index over an infinite integration length. Phys Med Biol. 2011 Sep 21; 56(18):5789-803. View abstract
  28. Automated extraction of radiation dose information from CT dose report images. AJR Am J Roentgenol. 2011 Jun; 196(6):W781-3. View abstract
  29. Objective characterization of GE discovery CT750 HD scanner: gemstone spectral imaging mode. Med Phys. 2011 Mar; 38(3):1178-88. View abstract
  30. Sensitivity analysis of a geometric calibration method using projection matrices for digital tomosynthesis systems. Med Phys. 2011 Jan; 38(1):202-9. View abstract
  31. A generic geometric calibration method for tomographic imaging systems with flat-panel detectors--a detailed implementation guide. Med Phys. 2010 Jul; 37(7):3844-54. View abstract
  32. A comparison of iterative algorithms and a mixed approach for in-line x-ray phase retrieval. Opt Commun. 2009 Aug 15; 282(16):3392-3396. View abstract
  33. Step by step analysis toward optimal MTF algorithm using an edge test device. J Xray Sci Technol. 2009; 17(1):1-15. View abstract
  34. A convenient alignment approach for x-ray imaging experiments based on laser positioning devices. Med Phys. 2008 Nov; 35(11):4907-10. View abstract
  35. Preliminary feasibility study of an in-line phase contrast X-ray imaging prototype. IEEE Trans Biomed Eng. 2008 Sep; 55(9):2249-57. View abstract
  36. DQE analysis on a dual detector phase x-ray imaging system. Phys Med Biol. 2008 Sep 21; 53(18):5165-76. View abstract
  37. Impact of additive noise on system performance of a digital X-ray imaging system. IEEE Trans Biomed Eng. 2007 Jan; 54(1):69-73. View abstract