ArcCheck模体与胶片在鼻咽癌VMAT剂量验证中的比较研究

摘要

To compare the performance of ArcCheck and film verification for volumetric intensity modulated arc therapy (VMAT) in the treatment of nasopharyngeal carcinoma,and to study the feasibility of ArcCheck in VMAT dosimetric verification. Five patients of nasopharyngeal carcinoma treated with VMAT were enrol ed in this study. Dose verification was carried out by ArcCheck and film respectively. The result showed that there were no significant differences between ArcCheck and film verification. ArcCheck software can obtain three dimensional dose distribution directly with simple operation. It is convenient for ArcCheck to be used for VMAT dosimetric verification.%　　比较研究ArcCheck与胶片在鼻咽癌容积弧形调强（VMAT）验证中的应用，探讨ArcCheck在VMAT剂量验证中的可行性。随机选取5例鼻咽癌病人的VMAT治疗计划，分别用ArcCheck和胶片两种方法进行剂量验证，比较两种方法的验证结果。ArcCheck验证的平均通过率为96.74±2.60，胶片验证的平均通过率是95.95±1.17，利用统计分析t检验，结果表明ArcCheck和胶片验证两种结果在剂量学上没有明显差异。ArcCheck分析软件可以直接获取三维合成的剂量分布，且操作过程较胶片验证简单，可以更为便捷的进行VMAT剂量验证。