A Monte Carlo Dosimetric Parameters of the 60 Co High Dose Rate Brachytherapy and Investigation of TG43 Dose Accuracy in Different Media Using GATE v8.2 Code

The determination of the dose distribution is the key step for accurate dose delivery in brachytherapy as well as radiotherapy application. This research study contributes on the characterization of the 60 Co high dose rate brachytherapy source model Co0.A86. We followed the recommendations of the American Association of Physicists in Medicine (AAPM) and European Society for Radiotherapy and Oncology (ESTRO) on dose calculation. In addition, this study aims also to investigate the accuracy of TG-43 algorithms dose calculations in different mediums relevant to high dose rate brachytherapy. For algorithm implementation, we have used the GEANT4 Application for Emission Tomography Monte Carlo code to reach our goal. Furthermore, we compared the obtained results with the previous published results. The obtained dosimetric data sets are in good agreement with the quoted values in the previous studies, where the authors used different Monte Carlo codes.