摘要
目的:探讨CT模拟定位在食管癌放射治疗的临床应用价值。方法:45例食管癌病例行CT模拟定位,全部病例以肿瘤中心为照射野的等中心点,照射野长度为肿瘤上、下缘放大3.5 cm,野宽为肿瘤边缘外放1.0 cm,总剂量为DT 60 Gy～70 Gy,2 Gy/次,5次/周。结果:CT模拟定位可以和X线模拟定位一样完成从定位到做体表标记的全过程。45例病例近期疗效显示完全缓解率达60.00%(27/45),部分缓解率为40.00%(18/45)。结论:CT模拟定位可以准确提供食管癌病变情况,利用CT模拟定位,可提供更多的原始信息和提高模拟精度。
Objective：To evaluate clinical application of CT simulated orientation in radiotherapy for esophageal cancer.Methods：45 patients entered the convention fractionation radiotherapy with orientation.The centre of radiotherapy fields is in line with the turmor′s.All patients received a total dose of 60Gy^70Gy at 2Gy daily;5 days a week.The radiotherapy field covered 3.5cm beyond the tumor margin longitudi-nally;The field in CT simulated plan extended 1.0cm beyond the gross tumor volume.Results：Like X-ray simulation,CT simulation can carry out all the process from simulation to body surface marking.Complete regression rate was 60.00%（27/45）,partial regression rate was 40.00%（18/45）.Conclusions：CT simulation could correctly display information of esophageal cancer,it can provide more original information,higher simulation precision.
出处
《航空航天医学杂志》
2011年第7期781-782,共2页
Journal of Aerospace medicine
关键词
食管癌
放射治疗
CT模拟定位
Esophageal cancer
Radiotherapy
CT simulated orientation
