LDR 近距离治疗¹⁹²Ir 线材的剂量学研究：蒙特卡罗和 TPS 计算。
Dosimetric investigation of LDR brachytherapy ¹⁹²Ir wires by Monte Carlo and TPS calculations.
机构信息
Department of Physics, Faculty of Arts and Sciences, Harran University, Osmanbey Campus, 63300 Sanliurfa, Turkey.
出版信息
Jpn J Radiol. 2013 Jan;31(1):24-30. doi: 10.1007/s11604-012-0140-1. Epub 2012 Oct 10.
PURPOSE
The aim of this study was to investigate the dose rate distribution around (192)Ir wires used as radioactive sources in low-dose-rate brachytherapy applications.
MATERIALS AND METHODS
Monte Carlo modeling of a 0.3-mm diameter source and its surrounding water medium was performed for five different wire lengths (1-5 cm) using the MCNP software package.
RESULTS
The computed dose rates per unit of air kerma at distances from 0.1 up to 10 cm away from the source were first verified with literature data sets. Then, the simulation results were compared with the calculations from the XiO CMS commercial treatment planning system.
CONCLUSION
The study results were found to be in concordance with the treatment planning system calculations except for the shorter wires at close distances.
目的
本研究旨在调查作为低剂量率近距离放射治疗应用中放射源的（192）Ir 丝周围的剂量率分布。
材料和方法
使用 MCNP 软件包对直径为 0.3 毫米的源及其周围水介质进行了五种不同线长度（1-5 厘米）的蒙特卡罗建模。
结果
首先，用文献数据集验证了从源 0.1 厘米到 10 厘米距离处每单位空气比释动能的计算剂量率。然后，将模拟结果与 XiO CMS 商业治疗计划系统的计算结果进行了比较。
结论
除了近距离的短丝外，研究结果与治疗计划系统的计算结果一致。
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