Effect of marker material on the dosimetric parameters of I-125 source (model 6711): Monte Carlo simulation

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Taherparvar Payvand; AziziGanjgah Ali

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ISSN: 2588-4824

Journal Paper

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Journal: Radiation Physics and Engineering Year:621 | Volume: | Issue: Page(s): 19-24

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Title

Effect of marker material on the dosimetric parameters of I-125 source (model 6711): Monte Carlo simulation

Author(s)

Taherparvar Payvand | AziziGanjgah Ali | Issue Writer Certificate

Keywords

BrachytherapyQ4

Dosimetric parametersQ4

I-125Q4

GEANT4Q4

Abstract

Low energy I-125- seeds are considered as a common source in different Brachytherapy techniques for treatment of different cancers. In this study, at first, we simulated and validated I-125 (model 6711) seed according to the TG-43U1 recommendation, by GEANT4 Monte Carlo toolkit. Moreover, we simulated new seeds containing cylindrical Ag+Al2O3 markers with different ratio of Ag and Al2O3 in the final composition of the marker and compared the radial dose functions and anisotropy functions of the sources. For validation and evaluation purposes, the radial dose function and anisotropy function were calculated at various distances from the center of the different simulated sources. The source validation results show that GEANT4 Monte Carlo toolkit produces accurate results for Dosimetric parameters of the I-125 seed by choosing the appropriate physics list. On the other hand, results show a similarity between calculated Dosimetric parameters of the I-125 seed (6711) and other sources, with a percentage difference of about 5%.

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