Mahadevappa Mahesh, MS, PhD, is an Assistant Professor of Radiology at Johns Hopkins University School of Medicine and the Chief Physicist at Johns Hopkins Hospital. His research interests are in medical imaging, particularly in areas of multi-detector computed tomography (MDCT), interventional fluoroscopy and digital mammography. He is board-certified from the American Board of Radiology (ABR) in diagnostic radiological physics. He is a board member of the American Association of Physicists in Medicine (AAPM), member of the Radiation Control Advisory Board for the State of Maryland and Scientific program committee member for the Radiological Society of North America (RSNA). He is also the Chair of the AAPM/RSNA Physics Tutorials, Chair of the Physics panel for American College of Radiology (ACR)-diagnostic X-ray in-training examination, and Curator for Partners in Physics program at AAPM. Dr Mahesh has published and lectures extensively in the area of MDCT technology. He also serves as a Scholar for Gerson Lehrman Group. He obtained his PhD in Medical Physics from Wisconsin.