| 一种估算静态MLC调强放疗治疗时间的方法 |
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| 引用本文： | 张彦新,戴建荣,李明辉,张寅. 一种估算静态MLC调强放疗治疗时间的方法[J]. 中国医学物理学杂志, 2011, 28(4): 2736-2740. DOI: 10.3969/j.issn.1005-202X.2011.04.009 |
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| 作者姓名： | 张彦新 戴建荣 李明辉 张寅 |
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| 作者单位： | 中国医学科学院北京协和医学院肿瘤医院肿瘤研究所放疗科,北京,100021 |
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| 摘 要： | 目的:本研究针对静态多叶准直器(MLC)调强放疗技术,分析影响治疗时间的各种因素,建立数学模型估算治疗时间,为临床评价计划执行效率提供一个工具。方法:以Varian600CD加速器为研究对象,计划采用Philips公司Pin-nacle3(v8.0)计划系统设计。将静态MLC调强放疗的治疗时间T分为4个部分:射线照射时间TMU、MLC走位时间TMLC、原射野准备时间TPOB和分野准备时间TPAB。求出各部分的线性函数表达式,即可得到治疗时间的模拟公式。在VARIS治疗记录中可查到两项有关治疗时间的历史记录,一项是每个射野中所有子野的MLC走位和射线照射时长,另一项是该射野的结束时刻。利用这两个时间数据,从系统中随机抽取30例典型病例作为样本病例,线性拟合确定其他各项的线性系数,即可求出治疗时间表达式。结果:治疗时间估算公式T=MU/DR+(NBS-NOB-NAB)×2.98+GA/5.78+(NOB-1)×17.58+NAB×26.95。采用另外6例病例验证估算公式,得到治疗时间计算值与实际值的比值分别为:1.03,0.92,1.13,0.99,0.99,1.06。结论:对于静态MLC调强放疗计划,影响治疗时...
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| 关 键 词： | 静态MLC调强放疗 治疗时间 估算 |
Estimate the Delivery Time of Static MLC-based IMRT |
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| ZHANG Yan-xin,DAI Jian-rong,LI Ming-hui,ZHANG Yin. Estimate the Delivery Time of Static MLC-based IMRT[J]. Chinese Journal of Medical Physics, 2011, 28(4): 2736-2740. DOI: 10.3969/j.issn.1005-202X.2011.04.009 |
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| Authors: | ZHANG Yan-xin DAI Jian-rong LI Ming-hui ZHANG Yin |
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| Affiliation: | ZHANG Yan-xin,DAI Jian-rong,LI Ming-hui,ZHANG Yin(Department of Radiation oncology,Cancer Hospital(Institute),Chinese Academy of Medical Sciences,Peking Union Medical College,Beijing 100021,China) |
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| Abstract: | Objective: To analyze the influence factors of static MLC-based IMRT plans' delivery time and make a simulant formula to estimate it.Methods: Taking Varian 600CD as the object linac and Pinnacle3(v8.0) as the treatment plan system,the delivery time of static MLC-based IMRT plan was divided into four parts: beam-on time,MLC moving time,prepare time of original beams and prepare time of additional beams.If we got every part's linear function expression,we got the formula.Each beam's MLC moving time / beam-on ... |
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| Keywords: | static MLC-based IMRT delivery time estimate |
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