摘要
目的 :研究SRS2 0 0X 刀治疗系统治疗靶点定位的精确度。方法 :应用人体头颅模型内特定标记物测定CT定位的精度 ,用胶片法测定二次等中心系统精度和总的治疗精度。结果 :BRW头环CT定位精度为 0 .65mm ,最大误差为 1 .0 9mm ;SRS2 0 0二次等中心系统误差为 0 .1 9mm ;总治疗误差理论计算值为0 .68mm ,胶片法检测值为 1 .43mm。结论 :X 刀治疗系统精确度已达到放射外科质量控制要求。
Objective: To study the accuracy of SRS200 linac radiosurgery system in our hospital. Methods: The CT localization accuracy of linac radiosurgery system was measured by markers in skull phantom, and the accuracy of isocenter subsystem and common error by film method. Results: The accuracy of CT localization of BRW headring was 0.65 ?mm and maximum error was 1.09?mm. The accuracy of SRS200 isocenter subsystem was 0.19?mm. The common accuracy of linac radiosurgery system was 0.68?mm mathematically and 1.43?mm actually. Conclusion: The accuracy of this linac radiosurgery system has come up to the standard of quality control of stereotactic radiosurgery.
出处
《山东大学学报（医学版）》
CAS
2002年第4期319-321,共3页
Journal of Shandong University:Health Sciences
关键词
放射外科
直线加速器
精确度
定位
X-刀
Radiosurgery
Linear accelerator
Accuracy and precision
Localization
