Physical characteristics of X-rays scattered by phantom in the transmission dose for radiotherapy

WU Aidong LIU Lei

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Physical characteristics of X-rays scattered by phantom in the transmission dose for radiotherapy

更新时间：2021-03-12

- Physical characteristics of X-rays scattered by phantom in the transmission dose for radiotherapy
- NUCLEAR TECHNIQUES Vol. 32, Issue 7, (2009)
- 作者机构：
  
  安徽省立医院放疗科
- 作者简介：
- 基金信息：
  
  安徽省自然科学基金项目(070413081);国家“973”计划项目(2006CB708307)资助
- DOI：
  CLC： R730.5
- Published：01 July 2009
- 稿件说明：
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[1]吴爱东,刘磊.X光透射剂量中模体散射线的物理特性研究[J].核技术,2009,32(07):541-544.

WU Aidong LIU Lei. Physical characteristics of X-rays scattered by phantom in the transmission dose for radiotherapy[J]. Nuclear techniques, 2009, 32(7): 541-544.
[1]吴爱东,刘磊.X光透射剂量中模体散射线的物理特性研究[J].核技术,2009,32(07):541-544. DOI：

WU Aidong LIU Lei. Physical characteristics of X-rays scattered by phantom in the transmission dose for radiotherapy[J]. Nuclear techniques, 2009, 32(7): 541-544. DOI：

摘要

放射治疗的X光透射剂量中含有不同强度的模体散射线

影响其临床应用。本文基于实验方法在不同条件下测量6MVX线射野中心轴及离轴位置的透射剂量分布

从中提取原射线剂量

计算得到相应的散射线剂量

分析透射剂量中原射线和模体散射线的大小

研究不同条件下透射剂量中模体散射线分布的物理特性。

Abstract

In radiotherapy

the transmission dose includes the dose contribution by scattered photons from the body volume of a patient exposed to the X-rays

and this affects clinic applications of the transmission dose method of radiotherapy.In this study

distributions of transmission dose under different conditions of 6 MV X-ray irradiation were measured on the central axis and the off-axis positions.The transmission dose composed of the primary dose and the scattered dose was analyzed.The primary dose was extracted from the transmission dose and the corresponding scattered dose was computed to study physical characteristics of these dose scattered by phantom.

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