RIGID APPARATUS TO REPLACE BEAM STEERING

摘要

A proton beam delivery system including a proton beam nozzle to emit a proton beam to a targeted region of a patient, a gantry wheel to support the proton beam nozzle, the gantry wheel being configured to rotate the proton beam nozzle about a rotation axis of the gantry wheel such that the proton beam nozzle emits the proton beam to an isocenter of the gantry wheel corresponding to the targeted region, a beamline deflector configured to be rotated by the gantry wheel to transport the proton beam along a curvilinear path from the rotation axis to the proton beam nozzle using a predetermined power setting of the beamline deflector, and a rigid support structure to support the beamline deflector when the gantry wheel is rotated such that the beam nozzle directs the proton beam to the isocenter from a plurality of radial directions using the same predetermined power setting.

主权项

1. A proton beam delivery system for a proton treatment system, comprising:
a proton beam nozzle to emit a proton beam having a predetermined energy level to a targeted region of a patient; a gantry wheel to support the proton beam nozzle proximate a circumferential surface of the gantry wheel, the gantry wheel being configured to rotate the proton beam nozzle about a rotation axis of the gantry wheel such that the proton beam nozzle emits the proton beam to an isocenter of the gantry wheel corresponding to the targeted region; a beamline deflector configured to be rotated by the gantry wheel to transport the proton beam along a curvilinear path of the beamline deflector from the rotation axis to the proton beam nozzle using a predetermined power setting of the beamline deflector; and a rigid support structure to support the beamline deflector such that when the gantry wheel is rotated to a plurality of positions around the isocenter, the support structure maintains the curvilinear path of the beamline deflector at each position such that the proton beam nozzle directs the proton beam having the predetermined energy level to the isocenter using the same predetermined power setting and energy level at each position.