中文

基于混合像素化 Dosepix 探测器的主动式个人眼晶状体剂量学

医学物理 2024-10-28 v2 仪器与探测器

摘要

眼晶状体剂量学在过去十年中一直是一个重要的研究领域。本文介绍了使用基于 Dosepix 探测器的主动式个人眼晶状体剂量计原型进行的剂量测量。在高度和直径均为 2020\,cm 的充水圆柱体模中心前方测量了软组织 33\,mm 深度处的个人剂量当量 Hp(3)H_\text{p}(3)。根据 ISO 4037,针对连续参考辐射场(N 系列)在 12.412.4\,keV 至 248248\,keV 的平均光子能量之间研究了归一化响应的能量依赖性。相对于 N-60(E=47.9keV\overline{E}=47.9\,\text{keV})在 00^\circ 照射角度下归一化的响应,在 75-75^\circ+75+75^\circ 的入射角范围内保持在 IEC 61526 的批准限值内。在脉冲光子场中的性能测试针对从 0.1Svh0.1\,\frac{\text{Sv}}{\text{h}}1000Svh1000\,\frac{\text{Sv}}{\text{h}} 变化的剂量率以及从 1ms1\,\text{ms}10s10\,\text{s} 的脉冲持续时间进行。剂量测量在高达 1Svh1\,\frac{\text{Sv}}{\text{h}} 的范围内均良好处于批准限值内(依据 IEC 61526)。未发现脉冲持续时间对测得剂量有显著影响。重复性测量得出的变异系数在两个受测眼晶状体剂量计原型中不超过 11\,

关键词

引用

@article{arxiv.2305.05470,
  title  = {Active Personal Eye Lens Dosimetry with the Hybrid Pixelated Dosepix Detector},
  author = {Florian Beißer and Dennis Haag and Rafael Ballabriga and Rolf Behrens and Michael Campbell and Christian Fuhg and Patrick Hufschmidt and Oliver Hupe and Carolin Kupillas and Xavier Llopart and Jürgen Roth and Sebastian Schmidt and Markus Schneider and Lukas Tlustos and Winnie Wong and Hayo Zutz and Thilo Michel and Erlangen Centre for Astroparticle Physics and CERN and Physikalisch-Technische Bundesantalt and was with the Erlangen Centre for Astroparticle Physics and is now with Helene-Lange-Gymnasium and was with the Erlangen Centre for Astroparticle Physics and is now with CodeCamp and : and N GmbH and Institute of Experimental and Applied Physics and Czech Technical University and was with CERN and is now with Mercury Systems},
  journal= {arXiv preprint arXiv:2305.05470},
  year   = {2024}
}

备注

This work has been submitted to the IEEE for possible publication. 9 pages, 10 figures