NDLI: Monte Carlo simulation of an Ir-192 brachytherapy source spectra, geometry and anysotropy factors using GEANT4 code

Content Provider	IEEE Xplore Digital Library
Author	Rodrigues, Sane Simone Oliveira Fonseca Begalli, Marcia Filho, Pedro Pacheco de Queiroz de Souza Santos, Denison
Copyright Year	2008
Description	Author affiliation: Instituto de Radioproteção e Dosimetria (IRD / CNEN - RJ), Av. Salvador Allende, s/n, 22780-160 Rio de Janeiro, Brazil (Rodrigues, Sane Simone Oliveira Fonseca; Filho, Pedro Pacheco de Queiroz; de Souza Santos, Denison) \|\| Instituto de Física, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, 20550-013, Brazil (Begalli, Marcia)
Abstract	In brachytherapy cancer treatments, methods for calculation of dose delivered to tumours and organs have been continuously improved. The goal of those calculations is the maximization of dose deposition in the target volume, while minimizing the deposition in the healthy tissues. The use of interstitial brachytherapy sources follows the recommendations of AAPM REPORT N° 51. The present work is based on Monte Carlo simulations with GEANT4. An Iridium-192 MicroSelectron HDR source was simulated and the geometry of dose deposition in media and primary spectra were obtained. Calculations also include photon-fluence distributions at two radial distances and accumulated air Kerma. A matrix of radial and angular coordinates was constructed, obtaining the Geometry Factor G(r, θ), the Anisotropy Function F(r, θ) and the Radial Dose Function g(r, θ) needed for dosimetry calculations, adopting the AAPM REPORT N° 51 recommendations. A cubic arrangement of sources was simulated as an example of multisource isodose calculation.
Starting Page	860
Ending Page	863
File Size	4767871
Page Count	4
File Format	PDF
ISBN	9781424427147
ISSN	10957863
DOI	10.1109/NSSMIC.2008.4774530
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-19
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Brachytherapy Geometry Solid modeling Medical simulation Steel Anisotropic magnetoresistance Monte Carlo methods Physics Brazil Council Encapsulation
Content Type	Text
Resource Type	Article

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Monte Carlo simulation of an Ir-192 brachytherapy source spectra, geometry and anysotropy factors using Geant4 Code

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