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点核积分计算6711型 125I籽粒源剂量参数
Determination of dosimetric characteristics for the model number 6711 125I seed source with the point-kernel method
- 核技术 2017年40卷第7期 文章编号：070501
- 作者机构：
1.中国原子能科学研究院 北京 102413
2.原子高科股份有限公司 北京 102413
3.同方威视技术股份有限公司 北京 100084
4.清华大学 工程物理系 北京 100084
- 作者简介：
[ "孟贝蒂, 女, 1988年出生, 2013年于中国原子能科学研究院获硕士学位, 现为博士研究生, 研究领域为核技术及应用", "MENG Beidi, female, born in 1988, graduated from China Institute of Atomic Energy with a master's degree in 2013, doctoral student, focusing on nuclear technology and applications" ]
崔海平, E-mail:cui-hp@hotmail.com CUI Haiping, E-mail: cui-hp@hotmail.com
- 基金信息：
DOI：10.11889/j.0253-3219.2017.hjs.40.070501
中图分类号： TL929收稿日期：2017-02-20，
修回日期：2017-03-28，
纸质出版日期：2017-07-10
- 稿件说明：
移动端阅览
孟贝蒂, 曹振, 石翠燕, 等. 点核积分计算6711型 125I籽粒源剂量参数[J]. 核技术, 2017,40(7):070501
Beidi MENG, Zhen CAO, Cuiyan SHI, et al. Determination of dosimetric characteristics for the model number 6711 125I seed source with the point-kernel method[J]. Nuclear techniques, 2017, 40(7): 070501
孟贝蒂, 曹振, 石翠燕, 等. 点核积分计算6711型 125I籽粒源剂量参数[J]. 核技术, 2017,40(7):070501 DOI： 10.11889/j.0253-3219.2017.hjs.40.070501.
Beidi MENG, Zhen CAO, Cuiyan SHI, et al. Determination of dosimetric characteristics for the model number 6711 125I seed source with the point-kernel method[J]. Nuclear techniques, 2017, 40(7): 070501 DOI： 10.11889/j.0253-3219.2017.hjs.40.070501.
摘要
使用点核积分方法计算6711型
125
I籽粒源参数，根据美国医学物理学家协会（American Association of Physicists in Medicine
AAPM）TG-43U1号报告推荐的剂量参数计算公式，可以获得6711型
125
I籽粒源各参数。与AAPM TG-43U1推荐值比较，剂量常数相差6.76%，径向剂量函数值（不包括0.1 cm、0.15 cm、0.25 cm）最大相差2.27%，最小相差0.02%；与MCNP5（A General N-Particle Transport Code
Version 5）方法计算结果比较，剂量常数相差6.19%，径向剂量函数值（不包括0.1 cm、0.15 cm、0.25 cm）最大相差6.65%，最小相差0.06%。结果与推荐值符合较好，证明点核积分能够应用于籽粒源剂量参数计算。
Abstract
Background
2
The
125
I brachytherapy source has become a popular treatment option in the treatment various tumors
in order to reduce the risk of surrounding normal tissue
it is important to know the dosimetric characteristics of seed source.
Purpose
2
The aim is to develop a reliable and saving time method for calculating the dosimetric parameters of seed source.
Methods
2
Dosimetric parameters (dose rate constant
radial dose function and anisotropy function) of the model number 6711
125
I seed source are calculated with point-kernel method following American association of physicists in medicine (AAPM) TG-43U1 recommendations.
Results
2
The result was compared with the relative data recommended by AAPM TG-43U1 and Monte-Carlo (M-C) method. Dose rate constant with AAPM was in agreement with 6.76%
and that with M-C is 6.19%; radial dose function (except 0.1 cm
0.15 cm and 0.25 cm) with AAPM is within 0.02%-2.27%
and that with M-C is within 0.06%-6.65%.
Conclusion
2
The point-kernel method can be applicable to calculate the dosimetric characteristics of seed sources.
关键词
Keywords
references
曹 振 , 阮 锡超 , 孟 贝蒂 , . MCNP5与EGSnrc比较计算 125 I种子源剂量参数 . 核技术 , 2014 . 37 ( 2 ): 020201 DOI: 10.11889/j.0253-3219.2014.hjs.37.020201 http://doi.org/10.11889/j.0253-3219.2014.hjs.37.020201 http://www.j.sinap.ac.cn/hejishu/CN/abstract/abstract150.shtml .
Zhen CAO , Xichao RUAN , Beidi MENG , . Determination of dosimetric parameters for 125 I seed source using MCNP5 and EGSnrc MC codes . Nuclear Techniques , 2014 . 37 ( 2 ): 020201 DOI: 10.11889/j.0253-3219.2014.hjs.37.020201 http://doi.org/10.11889/j.0253-3219.2014.hjs.37.020201 http://www.j.sinap.ac.cn/hejishu/CN/abstract/abstract150.shtml .
A E Babaheidari , M Shamsaee , P Ahmadi . Determination of dosimetric characteristics of a new design 125 I brachytherapy source with the Monte Carlo code MCNPX . Radiochemistry , 2014 . 56 ( 3 ): 296 - 301 . DOI: 10.1134/S1066362214030126 http://doi.org/10.1134/S1066362214030126 .
SCALE: a comprehensive modeling and simulation suite for nuclear safety analysis and design (Version 6.1)[R]. ORNL/TM-2005/39, Radiation Safety Information Computational Center, Oak Ridge National Laboratory, 2011.
R Nath , L L Anderson , G Luxton , . Dosimetry of interstitial brachytherapy sources: recommendations of the AAPM radiation therapy committee task group No.43 . Medical Physics , 1995 . 22 ( 2 ): 209 - 234 . DOI: 10.1118/1.597458 http://doi.org/10.1118/1.597458 .
M J Rivard , B M Coursey , L A DeWerd , . Update of AAPM task group No.43 report: a revised AAPM protocol for brachytherapy dose calculations . Medical Physics , 2004 . 31 ( 3 ): 633 - 674 . DOI: 10.1118/1.1646040 http://doi.org/10.1118/1.1646040 .
Hubbell J H, Seltzer S M. Tables of X-ray mass attenuation coefficients and mass energy-absorption coefficients 1 keV to 20 MeV for elements Z=1 to 92 and 48 additional substances of dosimetric interest[R]. Gaithersburg, MD, United States: National Institute of Standards and Technology-PL, Ionizing Radiation Division, 1995.
曹 振 , 李 飒 , 张 文在 , . 6711型 125 I种子源剂量参数的蒙特卡罗研究 . 核技术 , 2012 . 35 ( 5 ): 361 - 364 .
Zhen CAO , Sa LI , Wenzai ZHANG , . M-C simulation of dosimetric characteristics of model 6711 125 I seed source . Nuclear Techniques , 2012 . 35 ( 5 ): 361 - 364 .
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