Investigation of spectral characteristics of electron backscattering effect in radiotherapy with Monte Carlo code

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Investigation of spectral characteristics of electron backscattering effect in radiotherapy with Monte Carlo code

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- Investigation of spectral characteristics of electron backscattering effect in radiotherapy with Monte Carlo code
- NUCLEAR TECHNIQUES Issue 1, (2007)
- 作者机构：
  
  1. 中国科学院等离子体物理研究所
  2. 中国科学院等离子体物理研究所合肥 230031 合肥工业大学理学院
  3. ,合肥,230009
- 作者简介：
- 基金信息：
  
  安徽省自然科学基金项目(01043601);中国科学院知识创新工程项目;中国科学院百人计划项目;国家“973”计划项目(2006CB708307);合肥工业大学科学研究发展基金项目共同资助
- DOI：
  CLC： R730.5
- Published：01 January 2007
- 稿件说明：
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[1]林辉,宋钢,吴宜灿.Monte Carlo模拟对放疗中电子反散射谱的研究[J].核技术,2007(01):17-20.

Investigation of spectral characteristics of electron backscattering effect in radiotherapy with Monte Carlo code[J]. Nuclear techniques, 2007, (1): 17-20.
[1]林辉,宋钢,吴宜灿.Monte Carlo模拟对放疗中电子反散射谱的研究[J].核技术,2007(01):17-20. DOI：

Investigation of spectral characteristics of electron backscattering effect in radiotherapy with Monte Carlo code[J]. Nuclear techniques, 2007, (1): 17-20. DOI：

摘要

电子束治疗腮、耳垂等敏感处肿瘤时

经常需要挡铅以保护正常组织

由此产生电子的反散射效应。本文用蒙特卡罗程序模拟了10MeV临床电子束谱随深度的变化;给出了多种散射体的反散射谱平均能量与基本电子谱平均能量的比值随平均束能量的变化曲线。并从能谱的观点

对反散射效应强弱随深度的变化关系作了定性分析

得到与文献一致的结论。

Abstract

The Pb slab is often used to protect normal tissues against beam damage in electron beam treatment of sensitive tumors.The spectral characteristics of a 10 MeV clinic electron beam as a function of the depth are simulated using Monte Carlo code MCNP4C.The simulation results show the relationship between the mean beam energy and the ratio of the mean energy of the backscattered spectra to that of the primary spectra.The similar characteristics are obtained for several scattering materials.The variation in the backscattering effect intensity with the depth is also qualitatively analyzed in viewpoint of the energy spectrum

and the consistent conclusions with the published literature are deduced.

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