PROBLEM TO BE SOLVED: To obtain a driving type patient platform that can efficiently perform positioning work for making the position coincide with that established when a treatment plan is generated.SOLUTION: There are provided translation units 3, 4, and 5 that translate a top board 8 in the X direction, the Y direction, and the Z direction, respectively, in a fixed coordinate system 10 rotation units 6, 7, and 8 that rotate the top board 8 in the &theta direction around the X axis, the &phiv direction around the Y axis, and the &xi direction around the Z axis, respectively and a control device that controls the translation units 3, 4, and 5 and the rotation units 6, 7, and 8, based on an input desired rotation center point and an input desired rotation angle. The control device is provided with a rotation drive signal generation unit that generates a rotation drive signal for moving the top board 8 in a rotating manner from the reference state (a) of the translation units 3, 4, and 5 and the rotation units 6, 7, and 8 to a desired rotation angle and a translation drive signal generation unit that generates a translation drive signal for translating the translation units 3, 4, and 5 in such a way that the amount of translation movement, of the desired rotation center point P, that is caused by the rotation movement becomes the same as or smaller than a predetermined value.COPYRIGHT: (C)2011,JPO&INPIT【課題】治療計画時に策定した位置に合わせる位置決め作業を効率的に行うことができる駆動式患者台を得ることを目的とする。【解決手段】固定座標系10に対して、X軸方向、Y軸方向、Z軸方向の各軸方向に天板8を並進させる並進手段3、4、5と、X軸周りのθ方向、Y軸周りのφ方向、Z軸周りのξ方向の各方向に天板8を回転させる回転手段6、7、8と、入力された希望回転中心点P及び希望回転角に基づいて並進手段3、4、5及び回転手段6、7、8を制御する制御装置とを備え、制御装置は、並進手段3、4、5と回転手段6、7、8の基準状態aから天板8を希望回転角に回転移動させる回転駆動信号を生成する回転駆動信号生成手段と、回転移動によって生ずる希望回転中心点Pの並進移動量が所定値以下となるように並進手段3、4、5を並進させる並進駆動信号を生成する並進駆動信号生成手段とを有した。【選択図】図1
