The application of Lynx-2D in proton spot scanning system commissioning

Tao CHEN; Xiufang LI; Mengya GUO; Haiyun KONG; Zhiling CHEN; Minghua ZHAO

doi:10.11889/j.0253-3219.2018.hjs.41.050201

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The application of Lynx-2D in proton spot scanning system commissioning

LOW ENERGY ACCELERATOR, RAY AND APPLICATIONS | 更新时间：2021-05-19

- The application of Lynx-2D in proton spot scanning system commissioning
- NUCLEAR TECHNIQUES Vol. 41, Issue 5, Article number: 050201(2018)
- 作者机构：
  
  1.中国科学院上海应用物理研究所嘉定园区上海 201800
  2.中国科学院大学北京 100049
  3.上海艾普强粒子设备有限公司上海 201800
- 作者简介：
- 基金信息：
  
  Independent Innovation and Development of High-tech Industry Project of Shanghai
- DOI：10.11889/j.0253-3219.2018.hjs.41.050201
  CLC： TL99
- Received：14 December 2017，
  
  Revised：18 January 2018，
  
  Published：10 May 2018
- 稿件说明：
移动端阅览
Tao CHEN, Xiufang LI, Mengya GUO, et al. The application of Lynx-2D in proton spot scanning system commissioning[J]. Nuclear techniques, 2018, 41(5): 050201
DOI：

Tao CHEN, Xiufang LI, Mengya GUO, et al. The application of Lynx-2D in proton spot scanning system commissioning[J]. Nuclear techniques, 2018, 41(5): 050201 DOI： 10.11889/j.0253-3219.2018.hjs.41.050201.

摘要

束斑的位置及其特性的快速测量，是质子笔型束扫描系统调试与质检中的关键问题。本文主要介绍了比利时IBA公司商用Lynx-2D在国内首台质子放疗示范装置点扫描系统中的使用情况。在点扫描照射系统调试中，Lynx-2D最主要的功能就是获得束斑信息，相比胶片其在线测量的优势极大提高测量效率。由于Lynx-2D自身软件无法对测量所得数据分析和获取照射束斑的位置信息，我们基于MATLAB开发了相应的分析工具，分别采用高斯分布拟合法和灰度重心法定义照射图像束斑的位置点，并测试了两种方法的有效性。

Abstract

Background

The rapid measurement of the location of beam spot and its characteristics is a key issue in the commissioning and quality control of proton pencil beam scanning system.

Purpose

This article introduces the IBA commercial Lynx-2D in the spot scanning system of the first domestic proton therapy facility. In the spot scanning system commissioning

Lynx-2D is mainly used to measure the beam spot.

Methods

The analysis tools based on MATLAB is developed because the beam position can not be obtained by Lynx-2D software through the measurement data

the beam spot location is identified in the image with the Grayscale gravity center method and the Gaussian fitting method.

Results

The two methods are satisfied with the measurement.

Conclusion

The measurement efficiency can be improved with these two methods to find the beam position

and it is convenient to handle the data with the software developed by ourselves.

关键词

Keywords

references

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