Dr. John A. Rumberger was trained in engineering and in medicine. He specializes in cardiac imaging [especially Cardiac CT], cardiac/coronary physiology and dynamics, and Preventive Cardiology. During his tenure at the University of Iowa and his subsequent years at the Mayo Clinic Dr. Rumberger established himself as a leader in the development of cardiac imaging using Computed Tomography as it relates to cardiovascular disease and in practical and clinical applications of Computed Tomography in understanding cardiac physiology and coronary atherosclerosis. He has published over 250 scientific papers, 250 abstracts, 35 book chapters, numerous invited editorials, and two books dealing with the development and application of cardiac CT. He is also author of ‘The Way Diet’ – a lifestyle plan of diet, exercise, and stress management. Dr. Rumberger is recognized as an authority on the use of Cardiac CT, CT physics, and in developing practice guidelines for its interpretation in patients. Currently Dr. Rumberger remains active in clinical practice, epidemiological research, Preventive Cardiology/Medicine and teaching Cardiologists and Radiologists methods to interpret Cardiac CT in clinical practice. He is a Permanent Member of Who’s Who in Health Care and has received numerous sponsored lectureships. He continues his research interests in early diagnosis of coronary disease and continues to lecture and travel extensively, and conduct numerous physician seminars regarding cardiac imaging.