医疗卫生装备2017，Vol.38Issue(6)：115-117,123,4.DOI:10.7687/j.issn1003-8868.2017.06.115
位置移动和剂量调节对调强放射治疗剂量验证通过率的影响
Effects of position shift and dose adjustment on pass rate of IMRT dose verification
陈利军 1谷晓华 1杨留勤1
作者信息
- 1. 453000 河南新乡,新乡市中心医院放疗科
- 折叠
摘要
Abstract
Objective To analyze the effects of position shift and dose adjustment on the pass rate of IMRT dose verification to facilitate to obtain rapidly high-pass-rate IMRT dose verification report.Methods At first,the dose unit of measuring dose map image and planning Dose Profile was unified.Secondly,the planning Dose Profile was moved at lateral and cephal-ocaudal directions respectively in contrast mode so as to determine the position error with the maximum pass rate.Thirdly,the highest pass rate point of dose verification was found in the range of dose adjustment.Fourthly,the plan report with the highest pass rate of dose verification was found out by adjusting position error and dose coefficient.Results The highest pass rate was obtained in case the displacement was-3 mm at lateral direction or +3 mm at cephal-ocaudal direction;high pass rate was got when dose adjustment coefficient was 1.02;high pass rate was achieved in case the displacement was-3 mm at lateral direction,+2 mm at cephal-ocaudal direction and the dose adjustment coefficient was 1.02,which was significantly different from those with other combined values (P＜0.05).Conclusion The dose verification technique is convenient and quick when used to obtain a high-pass-rate dose verification report.关键词
放射治疗/剂量验证/通过率/位置移动/剂量调节Key words
radiation therapy/dose verification/pass rate/position shift/dose adjustment分类
医药卫生引用本文复制引用
陈利军,谷晓华,杨留勤..位置移动和剂量调节对调强放射治疗剂量验证通过率的影响[J].医疗卫生装备,2017,38(6):115-117,123,4.
