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Dose distribution verification in intraoperative radiation therapy using an N-isopropyl acrylamide-based polymer gel dosimeter

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Abstract

The purpose of the current study was to verify the dose distribution of an Intrabeam-50 kV IORT system using polymer gel dosimetry technique. Results of dose distribution evaluation using NIPAM polymer gel dosimetry were compared with those measured using an ionization chamber and simulated using MCNPX code. Results showed the calculated gamma index was less than 1 with 2% dose-difference/2 mm distance-to-agreement for comparison between NIPAM and ionization chamber as well as between NIPAM and MCNPX simulation. It was concluded that the NIPAM polymer gel dosimetry is useful for verifying the dose distribution of low energy X-ray IORT technique.

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Acknowledgements

This study was supported as a research project under Grant No. IKIU-10372 by Imam Khomeini International University, Qazvin, Iran. The assistance of Mr. Seyed Mohsen Hoseini Daghigh is greatly appreciated. The authors acknowledge the Radiotherapy Department of Shohadae-Tajrish Hospital for their kind contribution to gel irradiation. The authors also acknowledge the Radiology Departments of Shohadae-Tajrish hospital, for their kind efforts in gel imaging.

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Authors and Affiliations

  1. Department of Physics, Imam Khomeini International University, Qazvin, 34149-16818, Iran

    Seyed Mohammad Mahdi Abtahi & Roghayeh Kargar Shaker Langaroodi

  2. Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran

    Mohammad Esmail Akbari

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  1. Seyed Mohammad Mahdi Abtahi
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  2. Roghayeh Kargar Shaker Langaroodi
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Correspondence to Seyed Mohammad Mahdi Abtahi.

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Abtahi, S.M.M., Kargar Shaker Langaroodi, R. & Akbari, M.E. Dose distribution verification in intraoperative radiation therapy using an N-isopropyl acrylamide-based polymer gel dosimeter. J Radioanal Nucl Chem 324, 481–488 (2020). https://doi.org/10.1007/s10967-020-07110-y

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