直肠癌术后盆腔三维适形放疗、简化调强技术和适形调强放疗的三维剂量学比较分析

《直肠癌术后盆腔三维适形放疗、简化调强技术和适形调强放疗的三维剂量学比较分析》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、直肠癌术后盆腔三维适形放疗、简化调强技术和适形调强放疗的三维剂量学比较分析［摘要］目的比较三维适形放疗、简化调强放疗和适形调强放疗在直肠癌术后放疗中的三维剂量学差异。方法选择2008年1月〜2013年1月在本院进行直肠癌术后放疗口无放疗禁忌证患者342例，分别使用三维适形放疗、简化调强放疗以及适形调强放疗方案，按照国际标准评价方法比较3种放疗方案的靶区平均剂量、靶区适形指数、剂量不均性指数及子野机器跳数。结果靶区平均剂量：三维适形放疗比简化调强放疗、适形调强放疗剂量要高，差异有统计学意义（P0.05）。靶区适形指数：三维适形放疗指数最低（P0.05）。剂量不均性指数：适形调强放疗

2、最高，简化调强放疗最低，3种方案差异有统计学意义（P0.05）。结论3种化疗方案屮，简化调强技术性价比最好，值得临床推广应用。［关键词］三维适形放疗；简化调强放疗；适形调强放疗；直肠癌术后［中图分类号］R735.3+7［文献标识码］A［文章编号］1674-4721（2015）05（b）-0060-03Comparativeanalysisofthreedimensionaldosimetryforthreedimensionalconformalradiotherapy,simplifiedintensity-modulatedtechniqueandintensity-modu

3、latedconformalradiotherapyofpelviccavityafterrectaicarcinomaoperationLIUKe-jiaDepartmentofRadiotherapy,theFirstPeople'sHospitalofTianmenCityinHubeiProvince,Tianmen431700,China[Abstract]ObjectiveTocomparethediffereneeofthreedimensionaldosimetryforhreedimensionalconformalradiotherapy,simplified

4、intensity-modulatedtechniqueandintensity-modulatedconformalradiotherapyinpostoperativeradiotherapyofrectalcarcinoma.Methods342patientswithoutcontraindicationofradiotherapywhoreceivedradiotherapyafterrectaicarcinomaoperationinourhospitalfromJanuary2008toJanuary2013wereselected.Theyweregiventhr

5、eedifferentschemesofthreedimensionalconfonnalradiotherapy,simplifiedintensity-modulatedradiotherapyandintensity-modulatedconformalradiotherapyrespectively.Meandosageintargetregion,conformalindexintargetregion,anddoseheterogeneityindexandmachineunit(MU)ofsegmentofthreekindsofradiotherapyplanwa

6、scomparedrespectively.ResultsAsformeandosageintargetregion,dosageofthree-dimensionalconformalradiotherapywashigherthanthatofsimplifiedintensity-modulatedradiotherapyandintensity-modulatedconformalradiotherapy,andtherewasastatisticaldifferenee(P0.05).Asforconfornialindexintargetregion,indexoft

7、hreedimensionalconformalradiotherapywasthelowest,andthediffereneewasstatisticallysignificant(P0・05).Asfordoseheterogeneityindex,indexofintensity-modulatedconformalradiotherapywasthehighest,andtheindexofsimplifiedintensity-modulatedradiotherap