Patent ID: 8674326
Filing Date: 2014-03-18
Classification: G01N

Abstract:
1. A driving type patient platform having a top board on which an irradiation subject is fixed when a radiation is irradiated onto the irradiation subject, the driving type patient platform comprising: a translation unit that translates the top board in the X direction, the Y direction, and the Z direction, respectively, in a fixed coordinate system fixed to an installation place where the driving type patient platform is installed; a rotation unit that rotates the top board in the θ direction around the X axis, the φ direction around the Y axis, and the ξ direction around the Z axis, respectively; and a control device that controls the translation unit and the rotation unit, based on an inputted desired rotation center point and an inputted desired rotation angle, wherein the control device is provided with a rotation drive signal generation unit that generates a rotation drive signal for performing rotation movement of the top board from the reference position states of the translation unit and the rotation unit to the desired rotation angle; and a translation drive signal generation unit that generates a translation drive signal for translating the translation unit, concurrently with performing the rotation movement, in such a way that the amount of translation movement of the desired rotation center point, that is caused by the rotation movement is maintained within a predetermined value.