Michael McNitt-Gray, PhD

Professor of Radiological Sciences in the David Geffen School of Medicine at UCLA

Dr. Michael McNitt-Gray is professor of Radiological Sciences in the David Geffen School of Medicine at UCLA. He is also the Director of the Biomedical Physics Graduate Program there. He received his PhD in Biomedical Physics from UCLA in 1993; his MSEE from Carnegie-Mellon University in 1980 and his BSEE from Washington University in St. Louis in 1979. He is ABR Certified in Diagnostic Medical Physics since 1998. His current research interests include investigations into X-ray computed tomography (CT) imaging with the goal of maximizing the information that can be extracted from the resulting image data. These activities include research into: (a) the physics of CT image acquisition including estimating radiation dose and assessing image quality; and (b) image processing techniques to analyze and extract information from the resulting image data, including computer aided detection and diagnosis (CAD). Dr. McNitt-Gray currently serves on the ICRU Committee on Image Quality and Patient Dose in Computed Tomography, the ACR CT Accreditation Program Physics subcommittee as well as various AAPM, RSNA and SPIE technical and scientific program committees. He also serves as a reviewer for several medical physics and radiology journals such as Medical Physics, Physics in Medicine and Biology and others.

Dr. McNitt-Gray's Lectures

Assessing Radiation Dose: How to Do It Right

Collimation vs. Slice Width, Dose, and Scan Time

Common Technical Mistakes and How to Avoid Them

Recent Publications

  1. National Lung Screening Trial Research Team, Aberle DR, Adams AM, Berg CD, Black WC, Clapp JD, Fagerstrom RM, Gareen IF, Gatsonis C, Marcus PM, Sicks JD. Reduced lung-cancer mortality with low-dose computed tomographic screening. N Engl J Med. 2011 Aug 4;365(5):395-409. Epub 2011 Jun 29.
  2. Chong D, Brown MS, Kim HJ, van Rikxoort EM, Guzman L, McNitt-Gray MF, Khatonabadi M, Galperin-Aizenberg M, Coy H, Yang K, Jung Y, Goldin JG. Reproducibility of volume and densitometric measures of emphysema on repeat computed tomography with an interval of 1 week. Eur Radiol. 2011 PMID: 22011903
  3. Larke FJ, Kruger RL, Cagnon CH, Flynn MJ, McNitt-Gray MF, Wu X, Judy PF, Cody DD. Estimated Radiation Dose Associated With Low-Dose Chest CT of Average-Size Participants in the National Lung Screening Trial. AJR Am J Roentgenol. 2011 Nov;197(5):1165-9. PMID: 22021510
  4. McCollough C, Branham T, Herlihy V, Bhargavan M, Robbins L, Bush K, McNitt-Gray M, Payne JT, Ruckdeschel T, Pfeiffer D, Cody D, Zeman R. Diagnostic Reference Levels From the ACR CT Accreditation Program J Am Coll Radiol. 2011 Nov;8(11):795-803. PMID: 22051465
  5. Leung AN, Bull TM, Jaeschke R, Lockwood CJ, Boiselle PM, Hurwitz LM, James AH, McCullough LB, Menda Y, Paidas MJ, Royal HD, Tapson VF, Winer-Muram HT, Chervenak FA, Cody DD, McNitt-Gray MF, Stave CD, Tuttle BD; on behalf of the ATS/STR Committee on Pulmonary Embolism in Pregnancy. An Official American Thoracic Society/Society of Thoracic Radiology Clinical Practice Guideline: Evaluation of Suspected Pulmonary Embolism In Pregnancy. Am J Respir Crit Care Med. 2011 Nov 15;184(10):1200-1208. PMID: 22086989
  6. Zhang D, Cagnon CH, Villablanca JP, Cody DD, Stevens DM, Zankl M, DeMarco JD, McCollough CH, Turner AC, Khatonabadi M, McNitt-Gray MF. Peak Skin and Eye Lens Dose from Brain-Perfusion CT Examinations Based On Monte Carlo Simulations. AJR Am J Roentgenol. 2012 Feb;198(2):412-7.
  7. Brown MS, Kim HJ, Abtin FG, Strange C, Galperin-Aizenberg M, Pais R, Da Costa IG, Ordookhani A, Chong D, Ni C, McNitt-Gray MF, Tashkin DP, Goldin JG. Emphysema lung lobe volume reduction: effects on the ipsilateral and contralateral lobes. Eur Radiol. 2012 Jul;22(7):1547-55.
  8. Boone JM, Hendee WR, McNitt-Gray MF, Seltzer SE. Radiation Exposure from CT Scans: How to Close Our Knowledge Gaps, Monitor and Safeguard Exposure--Proceedings and Recommendations of the Radiation Dose Summit, Sponsored by NIBIB, February 24-25, 2011. Radiology. 2012 Sep 10.
  9. Khatonabadi M, Zhang D, Mathieu K, Kim HJ, Lu P, Cody D, Demarco JJ, Cagnon CH, McNitt-Gray MF. A comparison of methods to estimate organ doses in CT when utilizing approximations to the tube current modulation function. Med Phys. 2012 Aug;39(8):5212-28.