| 摘要 |
A method and system creates radiosurgical lesions to treat moving target regions in a patient's anatomy . CT scan data of a pre-operational diagnostic image of a target region are generated. Based on the CT scan data, a generated treatment plan defines the requisite beam intensities and paths. The target region position is determined in near real - time. The target region's composite motion, due to respiration and heartbeat, is tracked. Signals representative of the change (caused by the composite motion) in the target region position at a current time, compared to the target region position in the CT scan, are generated. In response, the relative position of the x-ray source and the target is adjusted for the composite motion of the target repeatedly throughout the treatment. The x-rays are continually focused onto the target region in accordance with the treatment plan, while the x-ray source tracks the motion of the target region. |
