生命科学仪器2024，Vol.22Issue(3)：1-4,4.DOI:10.11967/2024220601
笔形束质子放疗系统质控中束斑大小测量方法对比研究
Methods for Quality Assurance of Spot size in Pencil Beam scanning Proton Therapy
鲍小静 1郑多林 1张晓强 1苏祝平1
作者信息
- 1. 中国科学技术大学附属第一医院离子医学中心·合肥离子医学中心,安徽合肥 230088
- 折叠
摘要
Abstract
Objective:This study aimed to compare different methods for measuring spot size for quality assurance in pencil beam scanning proton therapy system.Methods:Three different types of detectors,including Matrixx One two-dimensional plane ionization chamber array,Lynx-PT planar scintillator detector,and XRV-124 conical scintillator detector,were employed to measure spot sizes with different energies in the proton therapy system.The measured results were compared with the spot sizes obtained during commissioning and acceptance testing(CAT).Results:The spot size measurement results using Matrixx One showed significant deviations compared to CAT,with a maximum deviation of 230 MeV spot size at 41.25%.The maximum deviations for Lynx-PT and XRV-124 spot size measurements compared to CAT were-7.35%and 3.69%,respectively.Lynx-PT measurements consistently resulted in smaller spot sizes compared to CAT.Conclusion:Both Lynx-PT and XRV-124 are effective in measur-ing spot size in proton therapy systems,with Matrixx One optimized for larger spot sizes.In contrast,XRV-124,compared to Lynx-PT and Matrixx One,has an advantage in spot size measurement for rotational treatment rooms.关键词
笔形束质子放疗/质控/探测器/束斑大小Key words
Pencil beam scanning proton therapy/Quality assurance/Detector/Spot size分类
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鲍小静,郑多林,张晓强,苏祝平..笔形束质子放疗系统质控中束斑大小测量方法对比研究[J].生命科学仪器,2024,22(3):1-4,4.
