Frank Carroll, M.D., is a Board certified Diagnostic Radiologist and licensed Nuclear Medicine physician. He is a sub-specialist in Thoracic Imaging, and received his research and academic training at the University of California at San Francisco. Formerly, he was a Navy submarine medical officer and served on a Polaris nuclear submarine and at the Armed Forces Staff College. He has been a member of the faculty at Yale, Duke and Vanderbilt. His past research efforts have proven productive in areas as diverse as: the absorption of antimicrobial agents across experimental wounds, the in vivo evaluation of pulmonary arterial dynamics, elucidation of lung water accumulation in lungs and the characterization of interstitial and intravascular fluids in the lung using MRI, examination of therapeutic approaches to ARDS and cardiogenic pulmonary edema in intensive care units, as well as the production and use of pulsed, tunable, monochromatic X-rays in diagnosis and therapy. He was one of the founders of the Vanderbilt University Medical Free Electron Laser program, whose facility encompasses a large interdisciplinary collaboration including physicians, physicists, biomedcal engineers, cell biologists, materials scientists, and electrical and mechanical engineers. The pulsed, tunable, monochromatic x-ray beamline at the W. M. Keck Vanderbilt Free Electron Laser Center was conceived, designed, constructed and commissioned by Dr. Carroll and a group of physicists, and engineers, yielding the first embodiment of such x-rays in a geometry useful for imaging in humans and animals. His research helped elucidate the differences in linear attenuation in cancerous versus normal tissues using monochromatic x-rays in work performed at the Brookhaven National Laboratory's National Synchrotron Light Source. This investigator is a member of the E. Bronson Ingram Comprehensive Cancer Center at Vanderbilt University, one of the National Cancer Institute's funded cancer centers.