Therapeutic apparatus, computer program product, and method for determining an achievable target region for high intensity focused ultrasound

A therapeutic apparatus (500) comprising a high intensity focused ultrasound system (100, 200, 504) for treating a target region (526). The therapeutic apparatus further comprises a display (552) for displaying treatment planning data (562). The therapeutic apparatus further comprises a memory (556) containing machine executable instructions (580, 582, 584, 586, 588). The memory further contains a geometric model(572) of the high intensity focused ultrasound system. Execution of the instructions causes a processor (548) to receive (300, 400) the treatment planning data. Execution of the instructions causes the processor to render (302, 402) the geometric representation of the target region from the treatment planning data on the display. Execution of the instructions causes further causes the processor to calculate (304, 404, 406) an achievable target region (593) using the geometric model. Execution of the instructions further causes the processor to render (306, 408) the achievable target region on the disp