Giant Beam Zaps Tumor Cells (IMAGE) MediaSource Caption The new proton therapy center at UF Health Cancer Center - Orlando Health took four years to build and is treating as many as 20 patients a day for the 15 minute treatment. On average, patients undergoing proton therapy receive 25-30 treatments over four to six weeks. Credit Orlando Health 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.