摘要
目的:研究旋转照射剂量测量仪(ArcCHECK)在螺旋断层放疗(HT)计划剂量验证中的应用,寻求一种用于临床上的剂量验证方法。方法:采用ArcCHECK对36例患者螺旋断层放疗(HT)计划进行剂量验证,用SNC Patients软件进行剂量分布γ值分析,评估计划的剂量验证结果及实施的可行性。结果:36例患者HT计划剂量验证结果表明,采用Gamma法(3mm/3%)分析,γ≤1像素点平均通过率为99.7%±0.6%,γ通过率都大于95%。结论:ArcCHECK作为螺旋断层放疗计划的剂量验证稳定,可用于HT计划剂量分布验证。
Objective： To evaluate the dosimetric characteristics of ArcCHECK application in dose verification of Helical Tomotherapy planning. Methods： Dose verifications of Tomotherapy planning of 36 patients were performed using ArcCHECK. The γ analysis of dose distribution was conducted with SNC Patients software. Results ： The dose distribution measured by AreCHECK was well consistent with that calculated by Tomotherapy DQA station. In comparison of Arc- CHECK measured dose versus DQA calculated with 3mm/3% ~ criteria using SNC Patient software, the average pass rate of pixels of 36 cases with γ≤ 1 was 99.7% ＋0.6%. The -γ pass rates of the 36 cases were over 95%. Conclusion： Arc- CHECK has been successfully tested for dose verification of HT planning, and offers an accurate and convenient rotational dosimetric solution.
出处
《肿瘤预防与治疗》
2014年第1期20-23,共4页
Journal of Cancer Control And Treatment
