Positive Imaging: With R. Nick Bryan, M.D., Ph.D., at the helm, Penn's Department of Radiology has weathered some difficult times and undergone substantial growth and development. Armed with an array of cutting-edge imaging equipment, Penn radiologists are seeing more patients and advancing knowledge in the field. Residencies and fellowships are highly sought after. Among the nation's radiology departments, Penn's remains near the top in receiving research funding from the National Institutes of Health.