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三维适形与调强放疗技术在胸上段食管癌放疗中的剂量学比较

Journal of Modern Oncology(2013)

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Abstract
目的:比较调强放疗技术(IMRT)和三维适形放疗技术(3DCRT)治疗胸上段食管癌的剂量学差异。方法:选择34例胸上段食管癌患者,对每例患者分别进行调强适形放疗和三维适形放疗,利用剂量体积直方图来比较两种计划中靶区及器官的剂量学差异。结果:IMRT在靶区适合度和靶区剂量均匀性方面均优于3DCRT,IMRT减少了脊髓最大所受剂量,差异均有统计学意义(P<0.05);双肺受照剂量V5 IMRT高于3DCRT(P<0.05),但是V20差异无统计学意义(P>0.05)。结论:对胸上段食管癌IMRT有更好的剂量适形性,优于3DCRT放疗。
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Key words
3DCRT,IMRT,upper esophageal carcinoma
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