| 由测量驱动的蒙特卡罗模拟虚拟源的参数选择 |
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| 引用本文： | Tang B,Gou C,Fu Y. 由测量驱动的蒙特卡罗模拟虚拟源的参数选择[J]. 生物医学工程学杂志, 2011, 28(5): 932-5, 945 |
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| 作者姓名： | Tang B Gou C Fu Y |
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| 作者单位： | 四川大学华西医院放射物理技术中心;四川大学原子核科学技术研究所辐射物理及技术教育部重点实验室; |
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| 摘 要： | 基于蒙特卡罗(MC)方法的剂量计算算法已被普遍认为是可以在放射治疗中使用的最精确的计算工具。放射治疗中的MC模拟可分成两个部分,即对源的模拟和对实际患者的模拟。本文使用测量数据驱动的虚源模型建立了模拟直线加速器治疗头的虚拟源,通过与三维水箱中的测量数据比较,研究了虚拟源各种参数选择与计算精度之间的关系,表明考虑了初始光子源和次级光子源的综合影响,并选择合适的各种参数,由虚拟源出发的水模中的MC剂量分布可以与测量结果相一致,从而满足临床MC模拟的建模要求。
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| 关 键 词： | 蒙特卡罗模拟 虚拟源 测量数据驱动 参数选择 |
The specification of parameters driven by measurement data in the construction of virtual sources in Monte Carlo simulation |
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| Tang Bin,Gou Chengjun,Fu Yuchuan. The specification of parameters driven by measurement data in the construction of virtual sources in Monte Carlo simulation[J]. Journal of biomedical engineering, 2011, 28(5): 932-5, 945 |
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| Authors: | Tang Bin Gou Chengjun Fu Yuchuan |
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| Affiliation: | Tang Bin1 Gou Chengjun2 Fu Yuchuan11(Radiation Physics Center,West China Hospital,Sichuan University,Chengdu 610041,China)2(Key Lab for Radiation Physics and Technology of Ministry of Education,Institute of Nuclear Science and Technology,Chengdu 610064,China) |
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| Abstract: | Dose calculation algorithms based on the Monte Carlo(MC) method are widely regarded as the most accurate tool available in radiotherapy.The MC simulation in radiotherapy has been split into two parts: the radiation source simulation and patient simulation.In this research,a virtual source for simulating the linear accelerator head was constructed with measurement-driven models.The dependence between the calculation accuracy and the specification of various parameters was studied by comparison between the me... |
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| Keywords: | Monte Carlo(MC) simulation Virtual source Measurement-driven model Parameter specification |
| 本文献已被 CNKI PubMed 等数据库收录！ |
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