The FH Burr Proton Therapy Center at Massachusetts General Hospital was opened in 2002 and has treated more than 10000 patients. The facilty relies upon an IBA cyclotron and delivers the treatment beam to two 360o gantries and a dedicated ocular treatment line. Before 2002 patients were treated with protons at the Harvard Cyclotron Laboratory across the river at Harvard University.


The gantries are used for a wide range of treatment sites including pediatrics and brain and head and neck cancers.

Proton therapy gantry

A dedicated ocular treatment line is available for eye treatments.


The radiation oncology photon radiation facilities are located in two buildings on the Massachusetts General Hospital main campus and four affiliated cancer centers: Emerson Hospital, North Shore Medical Center, Newton Wellsley Hospital and Boston Medical Center. There are 6 linear accelerators at the main campus and 8 devices at the affiliated sites.

The main campus provides comprehensive therapeutic radiation services including brachytherapy (HDR and LDR), intraoperative electron therapy, TBI, SBRT, SRS, and kilovoltage treatments. In 2012 the department relocated most of the photon services into the new Lunder Building on the main campus, located immediately adjacent to the FH Burr Proton Therapy Center.

One of the six linear accelerators in the Lunder Building: