[1]陈昭,雷琴,杨鹏,等. Geant4中不同物理列表对硼中子俘获治疗剂量分布的影响[J].中国医学物理学杂志,2019,36(1):1-5.[doi:DOI:10.3969/j.issn.1005-202X.2019.01.001]
 CHEN Zhao,LEI Qin,YANG Peng,et al. Effects of different Geant4 physics lists on boron neutron capture therapy dose calculation[J].Chinese Journal of Medical Physics,2019,36(1):1-5.[doi:DOI:10.3969/j.issn.1005-202X.2019.01.001]
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 Geant4中不同物理列表对硼中子俘获治疗剂量分布的影响()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
36卷
期数:
2019年第1期
页码:
1-5
栏目:
医学放射物理
出版日期:
2019-01-25

文章信息/Info

Title:
 Effects of different Geant4 physics lists on boron neutron capture therapy dose calculation
文章编号:
1005-202X(2019)01-0001-05
作者:
 陈昭雷琴杨鹏文玉梅何冬林吴章文勾成俊
 辐射物理及技术教育部重点实验室/四川大学原子核科学技术研究所, 四川 成都 610064
Author(s):
 CHEN Zhao LEI Qin YANG Peng WEN Yumei HE Donglin WU Zhangwen GOU Chengjun
 Key Laboratory for Radiation Physics and Technology of Ministry of Education/Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
关键词:
 硼中子俘获治疗硼剂量非硼剂量剂量深度分布Geant4FLUKA
Keywords:
 boron neutron capture therapy boron dose non-boron dose dose depth distribution Geant4 FLUKA
分类号:
R811;R312
DOI:
DOI:10.3969/j.issn.1005-202X.2019.01.001
文献标志码:
A
摘要:
 Geant4是基于C++编写的开源蒙特卡洛模拟软件,提供多种包含中子与物质相互作用的物理列表。本研究采用Geant4提供的几种物理列表,对沿中子束方向的总吸收剂量、硼剂量和非硼剂量深度分布进行计算,并与FLUKA进行比较,模拟中子能量从0.025 3 eV到10 MeV。对于整个模拟中子能段,结果显示添加S(α, β)热模型的高精度中子物理列表(Geant4_HP_T)在总吸收剂量、硼剂量和非硼剂量深度分布上均与FLUKA符合很好,初步验证了Genat4能应用于硼中子俘获治疗(BNCT)相关研究。对于低能中子(<1 MeV),S(α, β)热模型对BNCT剂量深度分布的影响较大,QBBC和QGSP_BERT不适用于BNCT剂量分布计算。
Abstract:
 Abstract: Geant4 is an open source Monte Carlo simulation toolkit written in C++, and it provides a variety of physical lists including neutron interactions with matter. Herein several physical lists given by Geant4 are used to calculate the depth distributions of total absorption dose, boron dose and non-Boron dose along the direction of the neutron beam, and the obtained results were compared with FLUKA. The simulation neutron energy is from 0.025 3 eV to 10 MeV. In the studied energy range, the results show that the high-precision neutron physics list (Geant4_HP_T) with S(α,β) thermal model agrees well with FLUKA in the depth distributions of total absorbed dose, boron dose and non-boron dose, which preliminarily verifies that Geant4 can be used in the researches on boron neutron capture therapy (BNCT). For low energy neutrons (<1 MeV), the S(α,β) thermal model has remarkable effects on the depth distribution of BNCT dose, and both QBBC and QGSP_BERT aren’t suitable for the calculation of BNCT dose distributions.

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备注/Memo

备注/Memo:
 【收稿日期】2018-07-26
【基金项目】国家重点研发计划(2016YFC0105103)
【作者简介】陈昭,硕士研究生,主要研究方向:辐射物理与医学物理,E-mail: 1479130624@qq.com
【通信作者】勾成俊,研究员,主要研究方向:辐射物理与医学物理,E-mail: GOUCJSCU720@scu.edu.cn
更新日期/Last Update: 2019-01-24