PARTICLE BEAM THERAPY DEVICE AND METHOD OF CONTROLLING SAME

A particle beam therapy apparatus that reduces a burden on an operator is provided. The invention is directed to a particle beam therapy apparatus. The position and posture setter 32 moves a movable body, that is at least one of the irradiation nozzle 16 and the treatment table 18 that is capable of motion, and sets a relative position and posture of the irradiation nozzle 16 and the treatment table 18 . The movement path determiner 44 determines a movement path of the movable body when adapting the positional posture of the movable body from one condition among a plurality of prescribed conditions to another condition. The evaluation value determiner 46 obtains an evaluation value for a case of adapting the positional posture of the movable to each of a plurality of pre scribed conditions. This evaluation value is an evaluation value for a case of moving the movable body according to the movement path. The order determiner 48 determines a setting order for adapting the positional posture of the movable body to each prescribed condition based on the evaluation value. The position and posture setter 32 adapts the positional posture of the movable body to each of the plurality of prescribed conditions by moving the movable body according to the movement path determined by the movement path determiner 44.