| 6MV与15MVX线在肺癌调强放疗中的剂量学比较 |
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| 引用本文： | 张富利,郑明民,高军茂,王平,陈建平,孔庆阳.6MV与15MVX线在肺癌调强放疗中的剂量学比较[J].中国医学物理学杂志,2008,25(5):801-803. |
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| 作者姓名： | 张富利 郑明民 高军茂 王平 陈建平 孔庆阳 |
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| 作者单位： | 1. 北京军区总医院放疗科,北京,100700
2. 吉林大学,生命科学学院,吉林,长春,130012 |
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| 摘 要： | 目的：分析、比较用于治疗非小细胞肺癌（NSCLC）的6MV和15MVX线调强放疗（IMRT）计划。方法：随机选择10例NSCLC患者，采用6MV和15MVX射线对每例NSCLC进行IMRT的计划设计，并用ADAC Pinnacle3计划系统提供的卷积／迭加（convolution／superposition）算法对两种能量条件下相同布野方案的IMRT计划进行剂量计算，比较靶区及危及器官的剂量分布、DVH等指标。结果：6MV与15MV放疗计划的等剂量线和DVH相近，6MV计划的靶区剂量均匀性优于15MV计划．而15MV计划高剂量覆盖靶区的程度略优于6MV计划，食管、心脏、脊髓等危及器官的受量基本相同。结论：对于NSCLC，剂量计算应采用能够精确修正组织不均匀性影响的卷积／迭加等算法，调强放疗时应首选6MV X射线。
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| 关 键 词： | 调强放射治疗 非小细胞肺癌 侧向电子失衡 |
Dosimetric Comparison of 6MV and 15MV Photons for IMRT Treatment of Lung Cancer |
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| ZHANG Fu-li,ZHENG Ming-min,GAO Jun-mao,WANG Ping,CHEN Jian-ping,KONG Qing-yan.Dosimetric Comparison of 6MV and 15MV Photons for IMRT Treatment of Lung Cancer[J].Chinese Journal of Medical Physics,2008,25(5):801-803. |
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| Authors: | ZHANG Fu-li ZHENG Ming-min GAO Jun-mao WANG Ping CHEN Jian-ping KONG Qing-yan |
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| Institution: | ZHANG Fu-li1,ZHENG Ming-min1,GAO Jun-mao1,WANG Ping1,CHEN Jian-ping1,KONG Qing-yang2 (1.Department of Radiation Therapy,General Hospital of Beijing Military Comm,,PLA,Beijing 100700,China,2.Department of life science,Jilin University,Changchun Jilin 130012,China) |
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| Abstract: | Objective: To compare 6 MV and 15 MV photons intensity modulated radiotherapy(IMRT) for non-small cell lung cancer.Materials and methods: For a cohort of 10 patients,6 and 15 MV IMRT planning was performed using identical planning objective and dose constraint.Doses were computed with a commercially available TPS by using convolution/superposition(CS) algorithm.Plans were compared according to dose-volume histogram(DVH) analysis in terms of PTV homogeneity and conformity indices(HI and CI) as well as OARs d... |
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| Keywords: | intensity modulated radiotherapy non-small-cell lung cancer lateral loss of electronic equilibrium |
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