摘要
目的:分析金属支架与食管癌常规放疗靶区及危及器官剂量分布关系。方法:10例食管癌患者分为支架组和无支架组,行增强模拟定位CT扫描,在TPS计划系统勾画靶区和危及器官,设置3野常规放疗计划。放射源为6MV-X线。结果:适型指数(CI)和均匀性指数(HI)、靶区和危及器官,剂量支架组与无支架组无明显差异(P>0.05)。结论:有食管内支架采用多野同中心常规照射可获得无支架的剂量分布。
Objective：To evaluate the relationship of dose distribution between esophageal stent and target and organs at risk （OAR） with conventional radiotheraphy （CRT） of esophageal carcinoma.Methods：Ten patients were divided into stent and non-stent group.Describing target and OAR,designed radiation plan with 3 fields.Radiation source was 6MV-X-ray.Results：There was no significant difference for target conformity index （CI） and homogeneity index （HI）,target and OAR volum dose for stent and non-stent group （P ＞ 0.05）.Conclusion：It can gain similar dose distribution with non-stent to use isocenter CRT for esophageal stent.
出处
《现代肿瘤医学》
CAS
2013年第11期2472-2475,共4页
Journal of Modern Oncology
关键词
食管癌
放射线
支架
常规放疗
esophageal carcinoma
radioactive ray
stent
conventional radiotheraphy
