Heart disease in a patient? Explosives in an airport? New detection solutions are promised by advances in imaging science. Douglas P. Boyd, Ph.D., is a pioneer in imaging innovation, exploiting the computed tomography (CT) concept to advance fields as diverse as medicine and homeland security. He led the development of fan-beam CT technology, Xenon detector arrays, and electron beam tomography scanners that are used in hospitals, medical imaging centers, and airports. He is a former Professor of Radiology at the University of California, San Francisco and currently CEO of TeleSecurity Sciences, a venture company developing advanced solutions for Airport Security and Imatrex Inc.