胰腺癌伽马刀和螺旋断层放疗治疗计划剂量学比较  

Dosimetric Comparison of Treatment Plans of Pancreatic Carcinoma Treated with Body γ Knife and Tomotherapy

作　　者：吴伟章[1] 朱夫海[1] 常冬姝[1] 王进[1] 王勇[1] 

机构地区：[1]中国人民解放军空军总医院肿瘤放疗科,北京市100142

出　　处：《中国医疗器械杂志》2013年第3期232-234,共3页Chinese Journal of Medical Instrumentation

摘　　要：选取14例胰腺癌病例,均用Tomotherapy和伽马刀两种治疗计划。通过DVH计算靶区剂量和周围要害器官剂量。得出伽马刀计划靶区剂量比Tomotherapy高,伽马刀可显著提高胰腺癌靶区剂量,减少周围正常组织剂量。Tomotherapy有很高的适形度,优于伽马刀,能很好控制十二指肠和胃的最高剂量,但低剂量区范围较大。Fourteen patients with pancreatic carcinoma were selected. Two treatment plans were designed for each patient, including y knife and Tomtherapy. The dose characteristics were evaluated by DVH and were compared. The results showed that the ？ knife plan had the higher maximal and mean target dose than Tomotherapy. Body y knife can increase the target dose significantly, and decrease the OAR dose. Tomotherapy had excellent dose-target conformality, and it can control doses of duodenum and stomach easily, but it had larger low dose region.

关 键 词：胰腺癌 伽马刀 TOMOTHERAPY 

分 类 号：R318.1[医药卫生—生物医学工程]