Dr. Siegel is a well-known thought leader in the world of radiology and imaging informatics and artificial intelligence applications in medicine. He is currently Professor and Vice Chair of information systems at the University of Maryland School of Medicine, Department of Diagnostic Radiology, and the Chief of Radiology and Nuclear Medicine for the Veterans Affairs Maryland Healthcare System, both in Baltimore, MD as well as adjunct professor of computer science and biomedical engineering at the undergraduate campuses of the University of Maryland. Under his guidance, the VA Maryland Healthcare System became the first filmless healthcare enterprise in the World. He has written over 300 articles and book chapters about PACS (Picture Archiving and Communication Systems) and digital imaging, and has edited six books on the topic, including Filmless Radiology and Security Issues in the Digital Medical Enterprise. He has given more than 1,000 presentations throughout the world on a broad range of topics involving the use of computers in medicine and artificial intelligence. Dr. Siegel was symposium chairman for the Society of Photo-optical and Industrial Engineers (SPIE) Medical Imaging Meeting for three years and has been honored as a fellow in that organization as well as the American College of Radiology. He is also a Board member of Carestream Health, a billion-dollar global company in digital radiography and computed radiography systems and serves on numerous advisory boards in medical imaging.