Proton Therapy Machine (IMAGE) Emory Health Sciences Caption Proton therapy facilities are typically 100,000 square feet in size. Credit Photos courtesy Varian Medical Systems, Inc., and Rinecker Proton Therapy Center, Munich, Germany Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.