Medical charged particle irradiation apparatus

Abstract

A medical charged particle irradiation apparatus capable of irradiation from upward and horizontal directions and performing a preparing/ascertaining work without any separate device such as a moving capsule or the like comprising a patient's bed, on which a patient lies, a transport equipment for injecting and transporting charged particle beams toward the patient's bed, an irradiation field forming device for forming an irradiation field for the beams transported by the transport equipment, and a gantry provided to be rotatable about an axis of rotation, and wherein the irradiation field forming device is eccentrically arranged such that an axis of irradiation passes a position different from the axis of rotation, and the patient's bed is arranged on an opposite side of the transport equipment to a plane, which contains the axis of rotation and is substantially perpendicular to the axis of irradiation.

1 - 7 . Cancelled  
   
   
       8 . A medical charged particle beam irradiation apparatus for irradiating charged particle beam to an irradiation target comprising: 
 a rotating gantry;    an irradiation field forming device for irradiating said charged particle beam to said irradiation target, being arranged such that said irradiation field forming device passes a position different from a rotational axis of said rotating gantry;    a beam transport device for transporting said charged particle beam to said irradiation field forming device, being provided to said rotating gantry; and    a bed for supporting said irradiation target, said bed being rotatably provided relative to said irradiation field forming device,    a pointed end of said irradiation field forming device is positioned under the level of the rotational axis of said rotating gantry in a state that said irradiation field forming device is perpendicular to the axis.    
   
   
       9 . A medical charged particle beam irradiation apparatus according to  claim 8 , further comprising a rotating device for rotating said bed, and a controlling device for controlling said rotating device to maintain said bed in a horizontal state.