Development of a virtual source model for Monte Carlo-based independent dose calculation for varian linac.

ABSTRACT: Monte Carlo (MC) independent dose calculations are often based on phase-space files (PSF), as they can accurately represent particle characteristics. PSF generally are large and create a bottleneck in computation time. In addition, the number of independent particles is limited by the PSF, preventing further reduction of statistical uncertainty. The purpose of this study is to develop and validate a virtual source model (VSM) to address these limitations. Particles from existing PSF for the Varian TrueBeam medical linear accelerator 6X, 6XFFF, 10X, and 10XFFF beam configurations were tallied, analyzed, and used to generate a dual-source photon VSM that includes electron contamination. The particle density distribution, kinetic energy spectrum, particle direction, and the correlations betwe

SUBMITTER: Castle JR 

PROVIDER: S-EPMC9121055 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature