Traceability of absorbed dose to water in high-energy photon beams in medical electron accelerators

Xun LU; Guoping SUI; Xuelian HANG; Pengde WANG; Rongrong SUN; Yao XIAO; Jianxin CHEN; Jun HUANG

doi:10.11889/j.1000-3436.2017.rrj.35.060701

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Traceability of absorbed dose to water in high-energy photon beams in medical electron accelerators

RADIATION INTERDISCIPLINARY RESEARCH | 更新时间：2021-12-10

- Traceability of absorbed dose to water in high-energy photon beams in medical electron accelerators
- Journal of Radiation Research and Radiation Processing Vol. 35, Issue 6, (2017)
- 作者机构：
  
  1.上海市计量测试技术研究院上海 201203
- 作者简介：
- 基金信息：
  
  Quality Inspection Public Welfare Industry Research Special: Medical Accelerator Photon Absorption Dose Traceability Technology and Standard Device Research(201510001-03)
- DOI：10.11889/j.1000-3436.2017.rrj.35.060701
  CLC：
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Xun LU, Guoping SUI, Xuelian HANG, et al. Traceability of absorbed dose to water in high-energy photon beams in medical electron accelerators. [J]. Journal of Radiation Research and Radiation Processing 35(6):060701-4(2017)
DOI：

Xun LU, Guoping SUI, Xuelian HANG, et al. Traceability of absorbed dose to water in high-energy photon beams in medical electron accelerators. [J]. Journal of Radiation Research and Radiation Processing 35(6):060701-4(2017) DOI： 10.11889/j.1000-3436.2017.rrj.35.060701.

摘要

采用直接法测量医用电子加速器高能光子水吸收剂量，与我国现行的从空气比释动能转化为水吸收剂量间接法测量的结果进行比较。结果表明，两种方法测量结果相差1%以内，同时用传递比较法进行了验证。证明我国基于加速器光子水吸收剂量基准而建设的水吸收剂量溯源体系是可行的，为我国水吸收剂量直接测量提供依据。

Abstract

Results obtained by direct measurement of absorbed dose to water for medical electron accelerators were compared with that by indirect measurements (through converting the measured air kerma into absorbed dose to water). Experiments results demonstrate that the difference between two methods is within 1%, it is validated by the transfer comparison method meanwhile. It is demonstrated that the absorbed dose to water traceability system based on the photon absorbed dose to water for the accelerator is feasible. This provides the basis for direct measurement of absorbed dose to water for accelerators.

关键词

高能光子水吸收剂量辐射质修正因子量值传递量值溯源

Keywords

High energy photonAbsorbed dose to waterCorrection factor for beam qualityDissemination of the value of quantityTraceability of value of quantity

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