Representation and illustration of the initial parameters in GATE 8.1 monte carlo simulation of an Elekta Versa-HD linear accelerator

Abstract

The purpose of this study is to validate GATE 8.1 Radiotherapy Monte Carlo (MC) simulation of a 6 MV Elekta Versa-HD linear accelerator at King Abdulaziz University Hospital (KAUH). The simulation data using GATE 8.1 was benchmarked against measured data at KAUH. The simulation comprises treatment head, Multi-Leaf Collimators (MLCs), and homogeneous water phantom, whereas the measured data was performed using MP3 phantom and PTW 31,010, 0.125 cm 3 Semiflex Chamber. Dose depth distribution and dose profiles were carried out at three different field sizes 10x10, 20x20, and 30 × 30 cm 2. The calculated TPR 20,10 for the simulated data was found to be 0.658, 1.1% less than the measured TPR 20,10 which was found to be 0.666. The obtained results indicate good agreement between the simulated and measured data, where Gamma Index 3%/3 mm criteria reached values of 97% and 90% for relative dose and dose profiles, respectively.

Geant4 Simulation of Scatter Radiation Removal: Comparison and Validation of Anti-scatter Grid and Air Gap for X-ray Mammography

“…In this research, a Monte Carlo Simulation via vGATE (virtual Geant4 Application for Tomographic Emission) using the physics electromagnetic standard-option-3 model was exploited to simulate an X-ray mammography scanner based on its main components, basic geometry, effective energy source, and standard phantoms [8][9][12][13][14][15][16]. The simulations ran on several low-end personal computers.…”

“…The Monte Carlo simulation is a valuable tool for accurately simulating the production of Xrays in many imaging and therapeutic applications [7][8][9][10][11]. Geant4 Application for Tomographic Emission (GATE) made the simulation even more accessible to many enduser researchers, eliminating the need for sophisticated software development [12][13][14][15][16]. Simulating X-ray mammography with Geant4 application is of great interest to many researchers who don't have access to clinical machines.…”

A Monte Carlo study on the effect of nanoparticle shapes on dose enhancement and distribution using 197Au and 195Pt

“…The linear accelerator, VERSA HD, 6 MV beam was successfully modeled in simulation in an earlier study (Abolaban & Taha, 2020). The 6 MV beam parameters obtained from the modeling process was stored in a phase-space file.…”