外阴癌膀胱截石位电子线放疗支架在体位固定中的临床价值分析  

Clinical Value Analysis on the Electronic Beam Radiotherapy Stent in Bladder Lithotomy Position of Vulvar Cancer in Postural Fixation

作　　者：邓春涟[1] 李平英 李青革 DENG Chunlian;LI Pingying;LI Qingge(Jiangxi Cancer Hospital,Nanchang,330029)

机构地区：[1]江西省肿瘤医院,330029 [2]南昌大学附属三三四医院,330001 [3]江西省南昌市第三医院,330009

出　　处：《实用癌症杂志》2024年第9期1477-1481,共5页The Practical Journal of Cancer

基　　金：江西省卫生健康委科技计划项目(编号:202410060)。

摘　　要：目的探讨外阴癌膀胱截石位电子线放疗支架在体位固定中的临床价值。方法选取32例外阴癌患者,随机分为两组,各16例。两组均行膀胱截石位电子线放疗,对照组采用传统放疗摆位,研究组采用放疗支架进行摆位。比较两组摆位误差、照射野中心偏移距离、计划靶区(PTV)剂量学指标[适形指数(CI)、均匀性指数(HI)]、放疗疗效、摆位舒适度。结果研究组X轴、Y轴、Z轴摆位误差均小于对照组(P<0.05);研究组照射野中心偏移距离小于对照组(P<0.05);研究组CI、HI与对照组比较,均有显著性差异(P<0.05);研究组缓解率(87.50%)与对照组(81.25%)比较,差异无统计学意义(P>0.05);研究组摆位舒适度(93.75%)高于对照组(56.25%)(P<0.05)。结论外阴癌膀胱截石位电子线放疗支架能有效提高摆位准确度和患者舒适度,同时能降低照射野中心偏移距离,提高放疗照射剂量精准性,具有推广应用价值。Objective To investigate the clinical value of electronic beam radiotherapy stent in lithotomy position for vulvar cancer in postural fixation.Methods A total of 32 patients with vulvar cancer were selected and randomly divided into 2 groups,16 cases in each group.Both groups were treated with electron beam radiotherapy at the lithotomy position of the bladder,the control group was treated with traditional radiotherapy placement,and the study group was placed with radiotherapy stents.The setup error,offset distance from the center of the irradiation field,planned target volume(PTV)dosimetry indicators[Conformity Index(CI),Homogeneity Index(HI)],radiotherapy efficacy,and setup comfort were compared between the 2 groups.Results The X-axis,Y-axis,and Z-axis setup errors of the study group were smaller than those of the control group(P<0.05);the center offset distance of the irradiation field in the study group was smaller than that of the control group(P<0.05);The CI and HI of the study group were significantly different from those of the control group(P<0.05);the remission rate of the study group(87.50%)was not significantly different from that of the control group(81.25%)(P>0.05);The position comfort of the study group(93.75%)was higher than that of the control group(56.25%)(P<0.05).Conclusion The electron beam radiotherapy stent in bladder lithotomy position for vulvar cancer can effectively improve the positioning accuracy and patient comfort,and at the same time,it can reduce the offset distance of the center of the irradiation field and improve the accuracy of radiotherapy dose,which has the value of popularization and application.

关 键 词：外阴癌 电子线放疗 膀胱截石位 体位固定支架 摆位误差 

分 类 号：R737.35[医药卫生—肿瘤]