Surgical organ displacement for proton radiotherapy

Proton radiotherapy is a method of applying high-energy particle radiation to treat cancers. Proton therapy is appealing due to its ability to deliver highly conformal dose distributions while minimizing radiation to adjacent normal tissues (1). Proton treatments first began in the 1950s using equipment added on to large nuclear physics labs. The Indiana University Health Proton Therapy Center (IUHPTC, formerly Midwest Proton Radiotherapy Institute) was built at the Indiana University Cyclotron Facility in Bloomington, Indiana, and was the third established center actively treating patients in the United States. At present, there are 10 proton centers treating patients in the US and several more around the world.