Dosimetric investigation of LDR brachytherapy 192Ir wires by Monte Carlo and TPS calculations期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Dosimetric investigation of LDR brachytherapy 192Ir wires by Monte Carlo and TPS calculations

Authors:	Ahmet Bozkurt Hediye Acun Gonul Kemikler

Institution:	1. Department of Physics, Faculty of Arts and Sciences, Harran University, Osmanbey Campus, 63300, Sanliurfa, Turkey 2. Department of Biophysics, Faculty of Medicine, Harran University, Yenisehir Campus, 63300, Sanliurfa, Turkey 3. Department of Medical Physics, Institute of Oncology, Istanbul University, 34390, Capa, Istanbul, Turkey

Abstract:	Purpose The aim of this study was to investigate the dose rate distribution around ¹⁹²Ir 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.

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