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胃癌术后调强放疗的剂量学优势及近期疗效观察 被引量:2

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摘要 目的评价胃癌术后调强放疗的剂量学优势及近期疗效。方法 32例胃癌患者术后采用调强技术行放疗,靶区包括肿瘤床、吻合口及淋巴引流区,处方剂量:计划靶区(PTV)DT45Gy/25次,高危计划靶区(PTV1)DT55Gy/25次。放疗同期口服卡培他滨625 mg/m^2,每天两次。评价毒副反应及近期疗效。最初10例患者均应用相同的CT图像做适形放疗、调强放疗计划,比较靶区及正常组织的照射剂量。结果调强放疗剂量分布优于适形技术。放化疗期间1例出现Ⅲ度骨髓抑制,1例出现大出血。放化疗前后患者体质量下降0~10%,中位值5.2%。2例在后续化疗期间出现肝功能异常,经保肝治疗后好转。调强放疗加同步化疗后2年总生存率、无复发生存率和局部区域控制率分别为70.3%、59.3%、89.8%。结论调强放疗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剂量。胃癌术后调强放疗加同期化疗是安全可行的,但其长期疗效有待于通过前瞻性随机研究来证实。
出处 《苏州大学学报(医学版)》 CAS 北大核心 2011年第6期984-986,共3页 Suzhou University Journal of Medical Science
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