Influence of stopping power tables on carbon-ion range simulations in Geant4

IF 0.9 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY
Sung Hyun Lee, Yoshiyuki Hirano, Jaeman Son, Sung Young Lee, Bitbyeol Kim, Jong Min Park, Kyung Su Kim, Seonghee Kang, Chang Heon Choi, Hyeongmin Jin
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Abstract

This study investigated the impact of different stopping power (SP) tables on the range of therapeutic energy of carbon ions in water. Four SP tables were considered: those provided by ICRU reports 73 and 90, the stopping and range of ions in matter (SRIM) software, and the MSTAR program. The theoretical range calculations were performed based on a continuous slowing-down approximation for each SP table. Range calculations were performed using the Geant4 Monte Carlo simulation toolkit. In the Geant4 simulations, the Bragg curve was generated solely by varying the input SP table while keeping the other simulation parameters constant. The results demonstrate a significant variation in the range of carbon ions across different SP tables within the therapeutic energy range, with differences of up to 6 mm in both the theoretical and simulated calculations. Therefore, when simulating the Bragg curve of therapeutic energy carbon ions using Monte Carlo simulations, it is crucial to acknowledge the potential for several millimeters of variation in the Bragg peak position, depending on the chosen SP table. Furthermore, a careful comparison of the simulated Bragg peak positions with experimentally measured data across the entire therapeutic energy range is recommended.

停止功率表对Geant4中碳离子范围模拟的影响
本研究考察了不同停止功率表对水中碳离子治疗能范围的影响。考虑了四个SP表:ICRU报告73和90提供的SP表,物质中离子(SRIM)软件的停止和范围,以及MSTAR程序。理论范围计算是基于对每个SP表的连续减速近似进行的。使用Geant4蒙特卡罗仿真工具包进行距离计算。在Geant4仿真中,在保持其他仿真参数不变的情况下,仅通过改变输入SP表生成Bragg曲线。结果表明,在治疗能量范围内,不同SP表的碳离子范围存在显著差异,理论和模拟计算的差异均达6毫米。因此,当使用蒙特卡罗模拟模拟治疗能量碳离子的布拉格曲线时,重要的是要认识到布拉格峰位置可能有几毫米的变化,这取决于所选择的SP表。此外,建议在整个治疗能量范围内对模拟布拉格峰位置与实验测量数据进行仔细比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of the Korean Physical Society
Journal of the Korean Physical Society PHYSICS, MULTIDISCIPLINARY-
CiteScore
1.20
自引率
16.70%
发文量
276
审稿时长
5.5 months
期刊介绍: The Journal of the Korean Physical Society (JKPS) covers all fields of physics spanning from statistical physics and condensed matter physics to particle physics. The manuscript to be published in JKPS is required to hold the originality, significance, and recent completeness. The journal is composed of Full paper, Letters, and Brief sections. In addition, featured articles with outstanding results are selected by the Editorial board and introduced in the online version. For emphasis on aspect of international journal, several world-distinguished researchers join the Editorial board. High quality of papers may be express-published when it is recommended or requested.
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