期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

人体胸壁厚度对肺部计数器探测效率的影响研究

Research on the Efficiency Deviation of Lung Counter Affected by Human Chest Wall Thickness
下载PDF
导出
摘要 人体胸壁厚度是影响肺部放射性核素测量准确性的重要参数。基于数字体素模型和MC法,计算得到了不同胸壁厚度条件下,肺部计数器对241Am出射光子的探测效率,进而研究了3组不同人群胸壁厚度差异造成的探测效率偏差。结果显示:胸壁厚度对241Am测量结果的影响严重,出射光子能量越低胸壁厚度影响越大;相较平均胸壁厚度时的探测效率,对于17.6keV光子,偏差可达308.0%,对于59.5keV光子,偏差可达50.0%。 Human chest wall thickness （CWT） is a key parameter which will affect the in -vivo lung counting. The lung counter＇s efficiency for the photos emitted by 24, Am under different CWT values is calculated based on the voxel phantom with the help of Monte Carlo method. Then the efficiency deviation caused by the different CWT values of three groups is studied. The result shows that measurement of 241 Am is seriously influenced by CWT and the situation will be worse if the photo energy is lower. The deviation can be as much as 308.0% for the photos of 17.6 keV and 50.0% for the photos of 59.5 keV. So it is essential to measure the real CWT val- ues of the participants while using the lung counter.
作者 盛伟 成智威 马怀成 徐明 冯天成 张洋 黎先利
机构地区 西北核技术研究所
出处 《核电子学与探测技术》 CAS 北大核心 2015年第12期1193-1196,共4页 Nuclear Electronics & Detection Technology
关键词 肺部计数器 体素模型 MCNP 胸壁厚度 探测效率 lung counter voxel phantom MCNP chest wall thickness detection efficiency
分类号 TL86 [核科学技术—核技术及应用]
  • 相关文献

参考文献7

  • 1Ahmed A S, Hauck B,et al. Lung counting : compari-son of detector performance with a four detector arraythat has either metal or carbon fibre end caps,and theeffect on MDA calculation [ J ], Radiation ProtectionDosimetry, 2012,151(2):262-266.
  • 2KramerG H, Lee T Y,Lee J I. Chest wall thicknessmeasurements and the dosimetric implications for maleworkers in the South Korean uranium industry [ J ].Radiation Protection Dosimetry,2001,95 ( 1) : 31 -35.
  • 3Ahmed A S, Kramer G H, Allen S. Calculation ofthe uncertainty in the activity estimate for workers inthe uranium industryf J]. Radiation Protection Dosim-etiy, 2011,143(1) :52-55.
  • 4黎先利,尹国辉,马怀成,冯天成,田言杰,成智威,孙高峰,申茂泉.平板高纯锗探测器几何参数修正的解析方法[J].原子能科学技术,2013,47(10):1883-1887. 被引量：2
  • 5黎先利,马怀成,尹国辉,等.体素模型及其在内照射活体外测量中的应用[C].第十六届全国核电子学与核探测技术学术年会,2012:325 -330.
  • 6VickersL R. The gender specific chest wall thicknessprediction equations for routine measurements of 239 Puand 241 Am within the lungs using HPGe detectors [ J ].Health Physics, 1996,70(3) :346-357.
  • 7Summerling T J, Quant S P. Measurements of the hu-man anterior chest wall by ultrasound and estimates ofchest wall thickness for use in determination of transu-ranic nuclides in the lung [ J ]. Radiation ProtectionDosimetry, 1982,3(4) :203 -210.

二级参考文献7

  • 1SALGADO C M, CONTI C C, BECKER P H B. Determination of HPGe detector response using MCNP5 for 20-150 keV rays[J]. Applied Radia- tion and Isotopes, 2006, 64(6).. 700-705.
  • 2HELMERRG, HARDYJ C, IACOB V E, et al. The use of Monte Carlo calculations in the de- termination of a Ge detector efficiency curve[J]. Nuclear Instruments and Methods in Physics Re search A, 2003, 511(3).. 360-381.
  • 3LUIS R, BENTO J, CARVALHAL G, et al. Parameter optimization of a planar BEGe detector using Monte Carlo simulations[J]. Nuclear In- struments and Methods in Physics Research A, 2010, 623(3).. 1 014-1 019.
  • 4ABBAS M I. Analytical formula for well-type NaI(T1) and HPGe detectors efficiency computa- tion[J]. Applied Radiation and Isotopes, 2001, 559(2) 245-252.
  • 5X-ray and gamma-ray standards for detector cali- bration, IAEA-TECDOC-619 [ R] Vienna: IAEA, 1991.
  • 6HUBBELL J H, SELTZER S M. Tables of X- ray mass attenuation coefficients and mass ener- gy-absorption coefficients from 1 keV to 20 MeV for elements Z= 1 to 92 and 48 additional sub- stances of dosimetric interest, NISTIR 5632[R]. USA: NIST, 1995.
  • 7CAN C, BILGICI S Z. An investigation of X-ray escape for a HPGe detector[J]. X-Ray Spectrom- etry, 2003, 32(4).. 276-279.

共引文献1

核电子学与探测技术
2015年 第12期

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部