May 23, 2011 - The core technology of ViewRay Inc., a combination of magnetic resonance imaging (MRI) and radiotherapy technologies, has been issued landmark patents in the United States and Europe. ViewRay, a privately held medical device company, holds the exclusive worldwide license for the technology from the University of Florida. The cancer treatment technology was invented by company founder James F. Dempsey, Ph.D., while he was a member of the radiation oncology faculty at the University of Florida.