Open AccessSimulation of the 6 MV Elekta Synergy Platform linac photon beam using Geant4 Application for Tomographic Emission
Author(s) -
Samir Didi,
A. Moussa,
Yahya Tayalati,
Mustapha Zerfaoui
Publication year - 2015
Publication title -
journal of medical physics/journal of medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.292
H-Index - 24
eISSN - 1998-3913
pISSN - 0971-6203
DOI - 10.4103/0971-6203.165077
Subject(s) - linear particle accelerator , collimator , imaging phantom , monte carlo method , physics , photon , beam (structure) , quality assurance , nuclear medicine , optics , computational physics , medical physics , mathematics , statistics , engineering , medicine , external quality assessment , operations management
The present work validates the Geant4 Application for Tomographic Emission Monte Carlo software for the simulation of a 6 MV photon beam given by Elekta Synergy Platform medical linear accelerator treatment head. The simulation includes the major components of the linear accelerator (LINAC) with multi-leaf collimator and a homogeneous water phantom. Calculations were performed for the photon beam with several treatment field sizes ranging from 5 cm × 5 cm to 30 cm × 30 cm at 100 cm distance from the source. The simulation was successfully validated by comparison with experimental distributions. Good agreement between simulations and measurements was observed, with dose differences of about 0.02% and 2.5% for depth doses and lateral dose profiles, respectively. This agreement was also emphasized by the Kolmogorov-Smirnov goodness-of-fit test and by the gamma-index comparisons where more than 99% of the points for all simulations fulfill the quality assurance criteria of 2 mm/2%.