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Monte Carlo dosimetry of the IRAsource high dose rate 192Ir brachytherapy source

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An Erratum to this article was published on 26 April 2016

Abstract

High-dose-rate (HDR) brachytherapy is a common method for cancer treatment in clinical brachytherapy. Because of the different source designs, there is a need for specific dosimetry data set for each HDR model. The purpose of this study is to obtain detailed dose rate distributions in water phantom for a first prototype HDR 192Ir brachytherapy source model, IRAsource, and compare with the other published works. In this study, Monte Carlo N-particle (MCNP version 4C) code was used to simulate the dose rate distributions around the HDR source. A full set of dosimetry parameters reported by the American Association of Physicists in Medicine Task Group No. 43U1 was evaluated. Also, the absorbed dose rate distributions in water, were obtained in an along-away look-up table. The dose rate constant, Λ, of the IRAsource was evaluated to be equal to 1.112 ± 0.005 cGy h−1 U−1. The results of dosimetry parameters are presented in tabulated and graphical formats and compared with those reported from other commercially available HDR 192Ir sources, which are in good agreement. This justifies the use of specific data sets for this new source. The results obtained in this study can be used as input data in the conventional treatment planning systems.

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Acknowledgments

The constructive criticism from the referees is greatly acknowledged.

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Authors and Affiliations

  1. Department of Nuclear Engineering, Faculty of Advanced Science & Technologies, University of Isfahan, Postal Code: 81756-73441, Isfahan, Iran

    Akbar Sarabiasl, Navid Ayoobian & Iraj Jabbari

  2. Nuclear Science Research School, Nuclear Science and Technology Research Institute NSTRI, Tehran, Iran

    Hossein Poorbaygi & Mohammad Reza Javanshir

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  1. Akbar Sarabiasl
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  2. Navid Ayoobian
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Correspondence to Akbar Sarabiasl.

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Sarabiasl, A., Ayoobian, N., Jabbari, I. et al. Monte Carlo dosimetry of the IRAsource high dose rate 192Ir brachytherapy source. Australas Phys Eng Sci Med 39, 413–422 (2016). https://doi.org/10.1007/s13246-016-0429-y

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  • DOI: https://doi.org/10.1007/s13246-016-0429-y

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