女性蹲姿曲面模型光子外照射剂量研究

辐射防护 ›› 2016, Vol. 36 ›› Issue (3): 135-141.

女性蹲姿曲面模型光子外照射剂量研究

马兰¹, 刘春雨², 梁潇², 葛亚雄¹, 颜彬¹

1.哈尔滨工程大学核安全与仿真技术国防重点学科实验室,哈尔滨 150001;
2.中广核研究院有限公司,广东深圳 518108

收稿日期:2015-07-30 出版日期:2016-05-20 发布日期:2021-11-12
通讯作者: 刘春雨。E-mail:chunyu1976@163.com
作者简介:马兰(1990—),女, 2013年毕业于西南科技大学辐射防护与环境工程专业,现为哈尔滨工程大学辐射防护及环境保护专业在读硕士研究生。E-mail:1069574011@qq.com
基金资助:
中央高校基本科研业务费专项基金资助项目(HEUCF141505);哈尔滨市科技创新人才研究专项资金资助项目(2013RFQXJ093)。

Research on photon external irradiation dosimetry for female squatting posture BREP phantom

Ma Lan, Liu Chunyu, Liang Xiao, Ge Yaxiong, Yan Bin

Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University,Harbin 150001

Received:2015-07-30 Online:2016-05-20 Published:2021-11-12

摘要/Abstract

摘要： 基于中国女性参考人曲面模型建立女性蹲姿曲面模型,采用蒙特卡罗方法,针对6种标准光子外照射几何,计算光子能量0.01～10 MeV范围内21个能量点的器官吸收剂量转换系数和有效剂量转换系数,并与直立姿势的剂量数据进行了对比。结果表明:两种姿势中某些器官的吸收剂量转换系数在前后、后前以及侧向照射方式下差异较大。其中,后前照射方式下,光子能量为0.03 MeV时,乳腺的吸收剂量转换系数比直立姿势高115.1%。在不同照射方式下,大部分能量点的有效剂量转换系数的差异在10%范围内。转换系数的差异主要是由于胳膊和腿位置的改变,以及蹲姿时因身体前倾造成器官在照射方向上厚度发生改变而产生的。

关键词: 蹲姿, 曲面模型, 蒙特卡罗方法, 剂量转换系数

Abstract: By establishing female squatting posture BREP phantom based on Chinese reference female BREP phantom,this paper researched the effects of posture change to photon dose conversion coefficients. Using Monte Carlo methods, the organ dose conversion coefficients and the effective dose conversion coefficients of 21 monoenergetic photon beams from 0.01 to 10 MeV under six standard irradiation geometries were calculated. Furthermore,the differences were compared between squatting and standing postures. It is found that there were greater differences among the organ absorbed dose conversion coefficients in anterior-posterior,posterior-anterior,left and right lateral irradiation geometries. For example,the absorbed dose conversion coefficient of breast is 115.1% higher than standing position under posterior-anterior irradiation geometry at 0.03 MeV. However, the differences of the effective dose conversion coefficients are within 10% in most energy points. The differences in conversion coefficients are due to the position of arms,legs and the thickness changes in irradiation direction of rays for squatting position.

Key words: squatting posture, boundary representation phantom, Monte Carlo methods, dose conversion coefficients

中图分类号:

TL72

马兰, 刘春雨, 梁潇, 葛亚雄, 颜彬. 女性蹲姿曲面模型光子外照射剂量研究[J]. 辐射防护, 2016, 36(3): 135-141.

Ma Lan, Liu Chunyu, Liang Xiao, Ge Yaxiong, Yan Bin. Research on photon external irradiation dosimetry for female squatting posture BREP phantom[J]. RADIATION PROTECTION, 2016, 36(3): 135-141.

参考文献

[1] George XX, Eckerman KF. Handbook of anatomical models for radiation dosimetry[M]. USA: Taylor and Francis Group, 2010: 5-7.
[2] Stabin M,Xu XG. Basic principles in the radiation dosimetry of nuclear medicine[J]. Seminars in Nuclear Medicine, 2014, 44(3):162-171.
[3] 范佳锦. 核医学显像所致患者内照射辐射剂量估算方法研究[D]. 北京:清华大学工程物理系, 2002.
[4] 曾志,李君利,邱睿. 质子剂量微分谱预估空间辐射剂量[J]. 清华大学学报,2006,46(3):374-376.
[5] 刘立业. 中国成年男性参考人体素模型及在剂量测量评价中的应用[D]. 北京: 清华大学工程物理系, 2010:53-55.
[6] 梁潇,刘春雨,董良,等. 中国女性参考人曲面模型的光子有效剂量转换系数计算[J]. 原子能科学技术,2014,48(增刊):780-785.
[7] 孙文娟,谢添武,贾向红,等. 基于非均匀有理B样条的中国数字人女性可变3D模型的构建[J]. 航天医学与医学工程,2012,25(3): 197-201.
[8] Su Lin,Han Bin,Xu XG. Calculated organ equivalent doses for individuals in a sitting posture above a contaminated ground and a pet imaging room[J]. Radiation Protection Dosimetry, 2012, 148(4):439-443.
[9] Han Bin,Zhang Juying,Na Yong Hum,et al. Modeling and Monte Carlo organ dose calculations for workers walking on ground contaminated with Cs-137 and Co-60 gamma sources[J]. Radiation Protection Dosimetry, 2010, 141(3): 299-304.
[10] Olsher RH,Van Riper KA. Application of a sitting MIRD phantom for effective dose calculations[J]. Radiation Protection Dosimetry, 2005, 116(1-4): 392-395.
[11] 中国医学科学院放射医学研究所. GBZ/T 200.1—2007 辐射防护用参考人第1部分:体格数据[S].北京:人民卫生出版社,2008.
[12] 中国医学科学院放射医学研究所. GBZ/T 200.2—2007 辐射防护用参考人第2部分:主要组织器官质量[S]. 北京:人民卫生出版社,2008.
[13] ICRP. Conversion coefficients for use in radiological protection against external radiation[R]. ICRP Publication 74. 1996.
[14] ICRP. The 2007 recommendations of the International Commission on Radiological Protection[R]. ICRP Publication 103. 2007.
[15] 刘芳芳. 成年女性参考人体素辐射剂量模型的研究[D]. 哈尔滨:哈尔滨工程大学, 2013.