Geant4-based Monte Carlo Simulation of a linear ...
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Geant4-based Monte Carlo Simulation of a linear ...
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4rd African Regional Congress of IRPA on Radiation Protection (AFRIRPA04), Faculty of Medicine and Pharmacy of Rabat, Morocco 13-17 September 2014
Geant4-based Monte Carlo Simulation of a linear accelerator used in radiotherapy Samir Didi a,b, Yahya Tayalatia, Mustafa Zerfaouia,b and Abdellilah Moussa a a b
LPMR, University Mohammed First, PO. Box 717, Oujda 60000, Morocco Regional Hassan II Oncology Center , km 8, Jerada Street, P.O. Box. 2013, Oujda 60000, Morocco
Abstract The present study was designed to simulate the head of a linear accelerator Elekta Synergy Platform type the radiotherapy department of the Regional Centre of Oncology Oujda by using the Monte Carlo platform Geant4. For this purpose, The simulation
includes the major
components of the Multileaf accelerator head and a homogeneous water phantom. Calculations were performed for a photon beam with several treatment fields size ranging from 5×5 cm2 to 20×20 cm2 at 100 cm distance from source (SSD). The results obtained such as percentage depth-dose curves and beam profiles for different field sizes in a water phantom, show excellent agreement with the measured dose data for 6-MV photons produced by the LINAC. The gamma index comparisons were also performed where more than 99% of the points for all simulations passed the standard quality assurance criteria of 3mm/3%.
Keywords: Monte Carlo; Geant4, Radiotherapy, Grid computing.
