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Study of Reducing the Number of Segments and MUs of Esophageal Carcinoma IMRT Plans
Author(s): 
Pages: 2460-2463,2470
Year: Issue:  2
Journal: Chinese Journal of Medical Physics

Keyword:  食管癌调强放射治疗子野数跳数;
Abstract: 目的:研究降低食管癌调强计划子野数及MU数的可行性方法.方法:(1)射野方向:IMRT计划由物理师按照经验非均匀共面布野.(2)优化强度级数:分别设计为12、10、8、6优化强度级数.(3)围绕PTV连续定义六个和PTV同心的空心环并限制每个环剂量的计划(4)直接子野优化方法:使用DMPO模式设计,该模式允许预先设定最多子野数.结果:(1)选择的共面非均匀布野与均匀布野调强计划相比,肿瘤靶区的适形...
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