Our Portfolio
ViewRay designs, manufactures and markets MRIdian, the first and only MRI-guided radiation therapy system that images and treats cancer patients simultaneously. MRIdian integrates MRI technology, radiation delivery and our proprietary software to locate, target and track the position and shape of soft-tissue tumors while radiation is delivered. These capabilities allow MRIdian to deliver radiation to the tumor accurately while delivering less radiation to healthy tissue than existing radiation therapy treatments. We believe this leads to improved patient outcomes and reduced side effects from off-target radiation delivery.

MRIdian received 510(k) marketing clearance from the U.S. Food and Drug Administration, or FDA, for MRIdian in May 2012 and received permission to affix the CE mark in November 2014. Patients are actively receiving treatment on MRIdian systems at three cancer centers located at Washington University in St. Louis, University of California, Los Angeles and the University of Wisconsin–Madison.

Cancer is among the leading causes of death worldwide, accounting for over eight million deaths per year globally. Radiation therapy is a common method used to treat cancer that uses lethal doses of ionizing energy to damage the genetic material in cells. Nearly two-thirds of all cancer patients in the United States will receive some form of radiation therapy during the course of their illness, according to estimates by the American Society for Radiation Oncology.
Executive Officers

Chris A. Raanes has served as ViewRay's President and Chief Executive Officer and as a member of the board of directors since February 2013. Mr. Raanes brings over 15 years of experience in the private and public medical device field. Previously, Mr. Raanes was Executive Vice President from July 2011 to November 2012 and Chief Operating Officer and Senior Vice President from September 2002 to July 2011 at Accuray Incorporated, a medical device company. He also served as Vice President and General Manager, Digital Imaging at PerkinElmer Inc., a healthcare company, from December 1999 to March 2002. Mr. Raanes holds a B.S. and an M.S. in Electrical Engineering from the Massachusetts Institute of Technology.

James F. Dempsey, Ph.D. has served as our Chief Scientific Officer since founding ViewRay in March 2004. Dr. Dempsey has been a member of the board of directors since January 2008. Dr. Dempsey brings more than 17 years of experience in the field of radiotherapy medical physics to ViewRay. He previously served as a faculty member in the University of Florida Department of Radiation Oncology, as Assistant Professor from July 2001 to July 2007 and Associate Professor from July 2007 to January 2008. Dr. Dempsey holds a B.S. in Radiochemistry from San Jose State University and a Ph.D. in Nuclear Chemistry from Washington University in St. Louis.
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