CT/MRI融合图像在宫颈癌三维放疗靶区勾画中的应用  

Application of CT/MRI Fusion Images in the Target Area Delineation of Three-Dimensional Radiotherapy of Cervical Cancer

作　　者：孙丽[1] 高毅[2] SUN Li;GAO Yi(Department of Gynecology,Central Hospital of Nanyang City,Nanyang 473000,Henan Province,China)

机构地区：[1]南阳市中心医院妇科,河南南阳473000 [2]南阳市中心医院麻醉科,河南南阳473000

出　　处：《中国CT和MRI杂志》2020年第12期93-94,98,共3页Chinese Journal of CT and MRI

摘　　要：目的分析应用CT/MRI融合图像勾画宫颈癌三维放疗治疗靶区的可行性。方法选择2018年4月至2019年4月于我院经病理确诊的宫颈癌患者16例纳入本研究,实验组以CT/MRI融合图像勾画靶区做放疗计划设计,对照组以CT图像勾画靶区做放疗计划设计。对比分析两组勾画的HR CTV体积和危及器官(膀胱、直肠、小肠)受照剂量。结果CT/MRI融合图像勾画的HR CTV体积比单纯用CT图像勾画的HR CTV体积小22.6%,两组比较差异有统计学意义(P<0.05);CT/MRI融合图像组膀胱D1cc、直肠D0.1cc和小肠D1cc、D0.1cc与单纯CT图像比较更小,差异有统计学意义(P<0.05)。结论CT/MRI融合图像在宫颈癌靶区勾画中具有较高的应用价值,可得到精确的靶区体积,明显减少正常器官的受幅照剂量。Objective To analyze the feasibility of CT/MRI fusion images in the target area delineation of three-dimensional radiotherapy of cervical cancer.Methods A total of 16 patients with cervical cancer diagnosed by pathology from April 2018 to April 2019 in our hospital were enrolled in this study.Patients with radiotherapy plan with target area delineation of CT/MRI fusion images were set as experimental group,and the patients with radiotherapy plan with target area delineation of CT images were set as control group.The delineated HR CTV volume and exposure doses of involved organs(bladder,rectum,small intestine)were compared and analyzed in the two groups.Results The HR CTV volume delineated by CT/MRI fusion images was 22.6%smaller than that delineated by CT images(P<0.05).The bladder D 1cc,rectum D 0.1cc and small intestine D 1cc,D 0.1cc of CT/MRI fusion images were smaller than those of simple CT images(P<0.05).Conclusion CT/MRI fusion images have high application value in the target area delineation of cervical cancer,which can obtain accurate target volume and significantly reduce the exposure doses of normal organs.

关 键 词：CT/MRI融合图像 宫颈癌 三维放疗治疗 靶区勾画 

分 类 号：R445.2[医药卫生—影像医学与核医学] R737.33[医药卫生—诊断学] R730.44[医药卫生—临床医学]