Patent ID: 8637837
Filing Date: 2014-01-28
Classification: A61N

Abstract:
1. A charged particle irradiation system comprising: an accelerator from which a charged particle beam is extracted; an irradiation unit that has a charged particle beam scanning unit and irradiates an irradiation spot with the charged particle beam extracted from the accelerator; and a control unit configured to, when an event that causes the irradiation to be interrupted occurs during the irradiation of the irradiation spot with the charged particle beam, continue the extraction of the charged particle beam from the accelerator until the irradiation of all spots of a spot group including a plurality of spots reach target doses; and stop the extraction of the charged particle beam from the accelerator at the time of completion of the irradiation of all spots that belong to the spot group, wherein, the spot group is predefined and includes a plurality of spots, including the irradiation spot.