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The purpose of this article is to calculate TG-43 dosimetric parameters for high-dose-rate BEBIGTM model of the 60Co after-loading brachytherapy source in several phantoms including, water, polystyrene, PMMA and RW1 using Monte Carlo Fluka code. Cobalt-60 can be used as an alternativeradio-isotopeto iridium-192 for high-dose-rate brachytherapy treatment of a vast majority of cancers such as Lung, Cervix, malignancies. In addition, TG-43 protocol is presented by American Association of Physicists in Medicine (AAPM) to calculate dosimetric parameters of brachytherapy sources. The estimated dose rate constant in water is 1.0936 intensity of air-Kermais 2D anisotropy function is in the range of 0.5 to 10 cm and angels change between 0 to 90 degrees. Consequently, the obtained results by the Fluka code were compared with those that were calculated by using MCNP and GEANT code. The comparison in this article has demonstrated a relatively good and acceptable similarity between these three codes. Overall, the Fluka code can be used to obtain dosimetric parameters in highdose- rate brachytherapy sources.

Investigation of Dosimetric Parameters of HDR Cobalt-60 after-loading Brachytherapy Source using Monte Carlo Fluka Code