Richard L. Ehman, M.D., is professor of radiology at the Mayo Clinic and an emeritus member of the Mayo Clinic Board of Trustees. His National Institutes of Health (NIH)–funded research focuses on developing new imaging technologies. He holds more than 40 patents, and many of his inventions are widely used in medical care. Ehman has served as chair of the Radiology and Nuclear Medicine Study Section of the NIH, as a member of the NIH’s Advisory Council of the National Institute of Biomedical Imaging and Bioengineering, and as a member of the agency’s Council of Councils. Ehman was elected to the National Academy of Medicine in 2010. He has served as president of a number of professional organizations, including the International Society for Magnetic Resonance in Medicine, the Academy of Radiology Research, and the Society for Body Computed Tomography and Magnetic Resonance. Ehman currently serves as president of the Radiological Society of North America.