Dose distribution around a β-applicator in radiotherapy

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Dose distribution around a β-applicator in radiotherapy

更新时间：2021-04-09

- Dose distribution around a β-applicator in radiotherapy
- NUCLEAR TECHNIQUES Issue 2, (1994)
- 作者机构：
  
  1. 上海医科大学放射医学研究所
  2. 上海医科大学附属肿瘤医院
  3. 上海医科大学放射医学研究所上海医科大学附属肿瘤医院
- 作者简介：
- 基金信息：
- DOI：
  CLC： R811
- Published：01 February 1994
- 稿件说明：
移动端阅览
[1]何志浩,陈正国,周智新,孙振雄.放射治疗中β施用器周围剂量的分布[J].核技术,1994(02):125-128.

Dose distribution around a β-applicator in radiotherapy[J]. Nuclear techniques, 1994, (2).
[1]何志浩,陈正国,周智新,孙振雄.放射治疗中β施用器周围剂量的分布[J].核技术,1994(02):125-128. DOI：

Dose distribution around a β-applicator in radiotherapy[J]. Nuclear techniques, 1994, (2). DOI：

摘要

讨论了放射治疗中确定β源周围剂量分布的方法。在实验上采用１０μｍ厚的ＴＬＤ超薄元件进行测量，理论上采用了Ｂｅｒｇｅｒ方法进行估算，与外推电离室值比较，前者符合较好，后者在离源２—５ｍｍ范围内偏差小于±５％。

Abstract

ethods for determining the dose distribution around a beta applicator are described.Experimentally a TLD dosimeter（about 10μm in thickness） was used to measure the dose and its distribution in a polystyrene phantom.Theoretically Berger’s method was adopted to calculate the dose distribution.An extrapolation ionization chamber was used to check feasibility of the above methods.It was found that the TLD method was in considerable agreement with the chamber method while the calculation was correct in a distance of 2-5mm to the source with an error of less than ±5%.

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