Validation of Monte Carlo dose calculation algorithm for CyberKnife multileaf collimator.

ABSTRACT:

Purpose

To commission and evaluate the Monte Carlo (MC) dose calculation algorithm for the CyberKnife equipped with a multileaf collimator (MLC).

Methods

We created a MC model for the MLC using an integrated module of the CyberKnife treatment planning software (TPS). Two parameters could be optimized: the maximum energy and the source full width at half-maximum (FWHM). The optimization was performed by minimizing the differences between the measured and the MC calculated tissue phantom ratios and profiles. MLC plans were calculated in the TPS with the MC algorithm and irradiated on different phantoms. The dose was measured using an A1SL ionization chamber and EBT3 Gafchromic films, and then compared to the TPS dose to obtain dose differences (ΔD). Finally, patient-specific q

SUBMITTER: Gondre M 

PROVIDER: S-EPMC8833269 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature