COMPACT PROTON THERAPY SYSTEM WITH ENERGY SELECTION ONBOARD A ROTATABLE GANTRY

摘要

Systems and apparatuses for providing particle beams for radiation therapy with a compact design and suitable to a single treatment room. The radiation system comprises a stationary cyclotron coupled to a rotating gantry assembly through a beam line assembly. The system is equipped with a single set of dipole magnets that are installed on the rotating gantry assembly and undertakes the dual functions of beam energy selection and beam deflection. The energy degrader may be exposed to the air pressure. The beam line assembly comprises a rotating segment and a stationary segment that are separated from each other through an intermediate segment that is exposed to an ambient pressure.

主权项

1. A radiation therapy system for irradiating an irradiation object with particle beams of a predetermined energy, said radiation therapy system comprising:
a stationary particle accelerator configured to provide a particle beam; a beam line assembly coupled to said stationary particle accelerator and operable to direct said particle beam along a first direction; an energy degrader operable to attenuate an energy of said particle beam; and a swiveling gantry assembly coupled to said beam line assembly and comprising:
a set of dipole magnets with controllable magnetic fields; anda collimator disposed in between said set of dipole magnets, wherein said set of dipole magnets are operable to select a portion of said particle beam with said predetermined energy, and to redirect said portion of said particle beam to a second direction.