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Issue:
Study of Reducing the Number of Segments and MUs of Esophageal Carcinoma IMRT Plans
Author(s):
CAO Yan-kun
,
CHI Zi-feng
,
JIAO Guang-qing
,
LIU Dan
,
LI Run-xiao
,
HAN Chun
Pages:
2460
-
2463,2470
Year:
2011
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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