【摘要】 目的:检测SGS-1型γ-刀治疗系统的物理精度。方法:利用胶片和电离室,测量全身伽玛刀综合定位精度及γ-TPS靶点规划剂量误差。结果:靶点位置精确度:头部小于0.88mm,体部小于1.52mm;单靶点绝对剂量精度:头部0.17%,体部小于0.52%;多个靶点合成绝对剂量精度:小于3%,等剂量曲线分布的胶片测量结果与计划计算的很接近。结论:SGS-1型γ-刀治疗系统的物理精度符合临床要求。更多还原

【Abstract】 This paper is to test the physical precision of SGS-Iγ-knife treatment system. The total positional precision andγ-treatement planning system (γ-TPS) planning misdose are tested by film and ionization chamber. The precision of head target location is less than 0.88mm. The body target is less than 1.52mm. The error of single target point between the measured and the predicted doses is less than 0.52% and the error of multi target points is less than 3%. The isodose distribution (on axial plane) from the film is consistent with the predicted one. So, SGS-Iγ-knife can meet clinical requirements.更多还原