CONTROL INFORMATION GENERATION APPARATUS, RADIATION THERAPY APPARATUS, RADIATION THERAPY SYSTEM, AND CONTROL INFORMATION GENERATION METHOD

摘要

PROBLEM TO BE SOLVED: To reduce the deviation of an actual radiation source movement route from a planned movement route.SOLUTION: A radiation therapy apparatus comprises a radiation source and a biaxial movement mechanism for moving the radiation source, and performs therapy by radiation emitted by the radiation source while controlling the movement mechanism according to a movement amount preset to the movement mechanism for each of segments of radiation source movement route and for each axis. A control information generation apparatus provides movement mechanism control information for the radiation therapy apparatus, comprising: a movement amount ratio computing unit for determining the ratio of movement amounts preset to the movement mechanism between the two axes for each segment; a pattern determination unit for determining a pattern of the magnitude relation of the ratio of movement amounts preset to the movement mechanism in the first segment and the second segment following the first segment; and an acceleration determination unit for determining for each axis an acceleration of the movement mechanism during the transition from the first segment to the second segment on the basis of the determination result of the pattern determination unit.