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胃癌术后三维适形放疗的剂量学分析 被引量:1

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摘要 目的:比较胃癌术后常规放射治疗与适形放射治疗技术在同一处方剂量(45Gy)时的剂量分布,为临床治疗提供参考。方法:选取9例胃癌术后患者,分别用常规放射治疗及适形照射技术进行计划设计。根据剂量体积直方图(DVH)比较靶区和正常器官的受量差异和剂量分布。结果:适形放疗的靶区剂量分布及均匀性明显优于常规照射。双肾23Gy剂量的体积比,适形放疗小于常规放疗。适形放疗脊髓受到的最大剂量是39.3+2.3Gy,常规放疗的最大剂量是51.7+1.8Gy。结论:适形照射相对于常规照射具有明显的靶区剂量分布优势,可以减少肾脏、脊髓等正常组织器官的照射体积。
作者 梁毅
机构地区 襄樊市中心医院
出处 《医疗装备》 2009年第11期37-38,共2页 Medical Equipment
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