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清华大学学报(自然科学版)  2016, Vol. 56 Issue (12): 1284-1289    DOI: 10.16511/j.cnki.qhdxxb.2016.25.020
  物理与工程物理 本期目录 | 过刊浏览 | 高级检索 |
医用加速器场所中子和感生γ光子剂量当量的计算分析
陈宜正1, 李君利1, 邱睿1, 武祯1, 康玺2
1. 清华大学 工程物理系, 粒子技术与辐射成像教育部重点实验室, 北京 100084;
2. 南华大学 核科学技术学院, 衡阳 421001
Dose equivalent of neutron and induced gamma rays near a medical accelerator
CHEN Yizheng1, LI Junli1, QIU Rui1, WU Zhen1, KANG Xi2
1. Key Laboratory of Particle and Radiation Imaging of Ministry of Education, Department of Engineering Physics, Tsinghua University, Beijing 100084, China;
2. School of Nuclear Science & Technology, University of South China, Hengyang 421001, China
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摘要 医用高能加速器在广泛应用的同时,也存在着相关的辐射屏蔽问题,特别是迷宫内剂量的快速估算。该文对当前典型的迷宫内中子及感生γ光子剂量当量的计算方法进行了汇总,将其应用于多折迷宫的计算案例中,并与基于MCNP(Monte Carlo N-particle transport code)的Monte Carlo模拟值进行对比。结果表明:这些计算方法基本能够较为精确的估算迷道内不同点的中子和感生γ光子剂量当量,与Monte Carlo模拟值的偏差在1个数量级以内,但可能会低于模拟值。在实际应用中,可通过乘以安全系数以防止剂量低估。
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陈宜正
李君利
邱睿
武祯
康玺
关键词 剂量当量迷宫中子感生&gamma光子Monte Carlo模拟    
Abstract:High energy accelerators are widely used in medicine, but the related radiation shielding calculations are difficult, especially for rapid assessments of the radiation dose in a maze. This study describes typical estimating methods for the dose equivalent of neutron and induced gamma rays in a maze, and calculates the dose equivalent in a multiple-bend maze. The results were compared with Monte Carlo simulations using the Monte Carlo N-particle transport code (MCNP). The methods can accurately estimate the dose equivalent of the neutron and induced gamma rays in the maze, within an order of magnitude of the Monte Carlo simulation results, with underestimates in some cases. Therefore, a safety factor is suggested for practical applications.
Key wordsdose equivalent    maze    neutron    induced gamma ray    Monte Carlo simulation
收稿日期: 2015-10-26      出版日期: 2016-12-15
ZTFLH:  TL72  
通讯作者: 邱睿,副教授,E-mail:quirui@tsinghua.edu.cn     E-mail: quirui@tsinghua.edu.cn
引用本文:   
陈宜正, 李君利, 邱睿, 武祯, 康玺. 医用加速器场所中子和感生γ光子剂量当量的计算分析[J]. 清华大学学报(自然科学版), 2016, 56(12): 1284-1289.
CHEN Yizheng, LI Junli, QIU Rui, WU Zhen, KANG Xi. Dose equivalent of neutron and induced gamma rays near a medical accelerator. Journal of Tsinghua University(Science and Technology), 2016, 56(12): 1284-1289.
链接本文:  
http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2016.25.020  或          http://jst.tsinghuajournals.com/CN/Y2016/V56/I12/1284
  图1 多折迷宫结构图
  图2 中子剂量当量计算值与MonteCarlo模拟值对比
  图3 第一折迷道中子剂量当量计算值与蒙特卡罗模拟值对比
  图4 第二折迷道中子剂量当量计算值与MonteCarlo模拟值对比
  图5 第三折迷道中子剂量当量计算值与MonteCarlo模拟值对比
  图6 感生γ光子剂量当量计算值与MonteCarlo模拟值对比
[1] 赵广宇, 李捷玮, 刘吉祥. 我国大型医用设备配置现状及利用评价方法简介[J]. 医疗卫生装备, 2003, 24(12):41-43. ZHAO Guangyu, LI Jiewei, LIU Jixiang. Introduction of the configuration situation and the utilization evaluation method of large medical equipment in China[J]. Chinese Medical Equipment Journal, 2003, 24(12):41-43. (in Chinese)
[2] 曹磊, 张贵英, 邓君, 等. 15 MeV医用电子直线加速器治疗室内光核中子辐射场的研究[J]. 辐射防护, 2010(3):131-134. CAO Lei, ZHANG Guiying, DENG Jun, et al. Research on photo neutron radiation field inside therapy room for 15 MeV X-ray medical linear accelerator[J]. Radiation Protection, 2010(3):131-134. (in Chinese)
[3] Mesbahi A, Ghiasi H, Mahdavi S R. Photoneutron and capture gamma dose equivalent for different room and maze layouts in radiation therapy[J]. Radiation Protection Dosimetry, 2010, 140(3):242-249.
[4] 李文茜, 李君利, 李鹏宇, 等. 迷宫屏蔽剂量计算方法的比较研究[J]. 辐射防护, 2009(1):1-7. LI Wenqian, LI Junli, LI Pengyu, et al. A comparison of the calculation methods of the maze shielding dose[J]. Radiation Protection, 2009(1):1-7. (in Chinese)
[5] 陈敬忠. 医用电子加速器迷宫内的X射线剂量当量率的测量和估算[J]. 核技术, 1998, 21(3):183-187. CHEN Jingzhong. Measurement and evaluation of X ray dose equivalent rates in mazes of medical electron accelerator facilities[J]. Nuclear Techniques, 1998, 21(3):183-187. (in Chinese)
[6] National Council on Radiation Protection and Measurements. NCRP Report No.151. Structural Shielding Design and Evaluation for Megavoltage X- and Gamma-Ray Radiotherapy Facilities[R]. Bethesda, USA:National Council on Radiation Protection and Measurements, 2005.
[7] Wang X, Esquivel C, Nes E, et al. The neutron dose equivalent evaluation and shielding at the maze entrance of a Varian Clinac 23EX treatment room[J]. Medical Physics, 2011, 38(3):1141-1149.
[8] 陈荣民. 高能X射线探伤机房屏蔽计算[J]. 辐射防护通讯, 2014, 4:4. CHEN Rongmin. A shielding calculation study for high energy industrial X-ray flaw detector rooms[J]. Radiation Protection Bulletin, 2014, 4:4. (in Chinese)
[9] Mesbahi A, Ghiasi H, Mahdavi S R. Photoneutron and capture gamma dose calculations for a radio therapy room made of high density concrete[J]. Nuclear Technology and Radiation Protection, 2011, 26(2):147-152.
[10] 段宗锦, 陈裕凯, 任广益, 等. 10 MeV辐照型电子直线加速器迷道出口处的设计优化[J]. 核技术, 2013, 36(11):110203-1-5. DUAN Zongjin, CHEN Yukai, REN Guangyi, et al. Optimizing design for the maze exit of a 10 MeV electron irradiation accelerator[J]. Nuclear Techniques, 2013, 36(11):110203-1-5. (in Chinese)
[11] 马永忠, 娄云, 王时进, 等. 医用加速器治疗室防护门的屏蔽估算与分析[J]. 中国自然医学杂志, 2007, 9(4):297-301. MA Yongzhong, LOU Yun, WANG Shijin, et al. Calculation and analysis on the shielding of protective door of the room of medical accelerator[J]. Chinese Journal of Natural Medicine, 2007, 9(4):297-301. (in Chinese)
[12] Falcao R C, Facure A, Silva A X. Neutron dose calculation at the maze entrance of medical linear accelerator rooms[J]. Radiation Protection Dosimetry, 2007, 123(3):283-287.
[13] Kim H S. New empirical formula for neutron dose level at the maze entrance of 15 MeV medical accelerator facilities[J]. Medical Physics, 2009, 36(5):1512-1520.
[14] Wu R K, McGinley P H. Neutron and capture gamma along the mazes of linear accelerator vaults[J]. Journal of Applied Clinical Medical Physics, 2003, 4(2):162-171.
[15] Goebel K, Stevenson G R, Routti J T, et al. Evaluating Dose Rates Due to Neutron Leakage Through the Access Tunnels of the SPS[R]. Geneva, Switzerland:European Center for Nuclear Research Report CERN LABⅡ-RA/Note/75-10, 1975.
[16] National Council on Radiation Protection and Measurements. NCRP Report No.79. Neutron Contamination from Medical for 0.1-100 MeV Particle Accelerators[R]. Bethesda, USA:National Council on Radiation Protection and Measurements, 1984.
[17] IAEA. Safety Reports Series No.47. Radiation Protection in the Design of Radiotherapy Facilities[R]. Vienna:IAEA, 2006.
[18] GBZ/T220.2-2009. 建设项目职业病危害放射防护评价规范第2部分:放射治疗装置[S]. 北京:人民卫生出版社,2009.GBZ/T220.2-2009. The Specification of Radiological Protection Assessment for Occupational Hazard in Construction Project Part 2:Radiotherapy Facility[S]. Beijing:People's Medical Publishing House, 2009. (in Chinese)
[19] 陈荣民, 田凯, 景丽艳, 等. 12 MeV工业探伤用直线加速器机房屏蔽计算[C]//第二十届海峡两岸及香港, 澳门地区职业安全健康学术研讨会暨中国职业安全健康协会2012学术年会. 成都:中国职业安全健康学会, 2012.CHEN Rongmin, TIAN Kai, JING Liyan, et al. Shielding calculation of the room of a 12 MeV linear accelerator using in industrial inspection[C]//Proceedings of the Twentieth Symposium of Occupational Safety and Health Occupational Safety and Health Association of China Across the Taiwan Strait and Hong Kong, Macao, 2012. Chengdu:China Occupational Safety and Health Association, 2012. (in Chinese)
[20] National Council on Radiation Protection and Measurements. NCRP Report No.144. Radiation Protection for Particle Accelerator Facilities[R]. Bethesda, USA:National Council on Radiation Protection and Measurements, 2003.
[21] Ghassoun J, Senhou N, Jehouani A. Neutron and photon doses in high energy radiotherapy facilities and evaluation of shielding performance by Monte Carlo method[J]. Annals of Nuclear Energy, 2011, 38(10):2163-2167.
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