Patent ID: 7154991

Claim:
A patient positioning assembly for adjusting a patient position during radiosurgery, said patient positioning assembly comprising: a. a support device to support the patient during treatment; and b. a controller coupled to the support device to control the motion of said support device, said controller comprising: i) means for receiving pre-treatment scan data representative of one or more pre-treatment scans of a treatment target within the patient, the pre-treatment scans showing the position and orientation of said target with respect to a pre-treatment coordinate system; ii) means for receiving image data containing information regarding the near real time position and orientation of said target with respect to a treatment coordinate system, said treatment coordinate system having a predetermined relationship to said pre-treatment coordinate system; and iii) means, responsive to said pre-treatment scan data and said image data, for generating at least one motion command signal for implementing one or more corrective motions of said support device to substantially match the position and orientation of said target as shown in said pre-treatment scan data of said target with the position and orientation of said target of the near real time image data.