Computational Modeling and Simulation of Linear Accelerator Performance for General Radiotherapy

Authors

  • Andelson L. Berondo Cancer Center, Davao Doctor’s Hospital Author
  • Lilian V. Rodriguez Radiotherapy Department, Jose R. Reyes Memorial Medical Center Author
  • Alwielland Q. Bello Natural Sciences Department, Bukidnon State University Author

DOI:

https://doi.org/10.52751/xeor9349

Keywords:

linear accelerator, depth-dose, geant4, monte carlo

Abstract

In radiation therapy, Monte Carlo method was a standard procedure for absorbed dose calculations; yet it was often frustrating due to long computation requirements and complex programming. Monte Carlo method was soon revitalized since the introduction of Geant4 framework purely written in C++ object-oriented language. This study utilized opensource Geant4 codes for modeling and simulation purposes. These codes were executed to simulate the performance of an Elekta Compact linear accelerator based on available manufacturer’s specifications. A 6-MV photon beam spectrum was modeled by transporting 2 billion 6-MeV primary electrons to hit a tungsten target from a 0.5 mm gun filament radius with spatial energy of 0.127 MeV and angular distribution of ±30o. Depth-doses were computed at 1.04 to 30 cm along the central axis of a voxelized water phantom. Validity of simulated data was verified by comparison with experimental measurement. There was close agreement between simulated and measured beam data. Normalization errors were equal to 4.6% for 10 x 10 cm2; and 3.9% for 15 x 15 cm2 field sizes. Computing efficiency has improved when using condensed-history technique. Therefore, the Geant4 framework can create model and simulate complex geometries of a linear accelerator facility with improved reliability, accuracy, and efficiency.

Downloads

Download data is not yet available.
Vol23.2

Downloads

Published

2024-02-15

Issue

Section

Research Articles

Categories

How to Cite

Berondo, A. L., Rodriguez, L. V., & Bello, A. Q. (2024). Computational Modeling and Simulation of Linear Accelerator Performance for General Radiotherapy. CMU Journal of Science, 23(2), 33-37. https://doi.org/10.52751/xeor9349

Most read articles by the same author(s)

Similar Articles

1-10 of 14

You may also start an advanced similarity search for this article.