Static IMRT and VMAT planning on 6 MV Flattened and Flattening-Filter-Free Beams of a TrueBeam VirtuaLinac System

TL;DR

This study evaluates the accuracy of Monte Carlo simulations for clinical IMRT and VMAT plans on a TrueBeam system using flattened and FFF beams, aiding in treatment verification.

Contribution

It provides a comprehensive assessment of phase space file accuracy for TrueBeam beams, comparing MC simulations with clinical data to support treatment verification.

Findings

Good agreement between MC and clinical data for both beam types

Quantified dose deviations to assist physicists in verification

Supports use of MC for treatment plan validation

Abstract

In this manuscript, we investigated the accuracy of the entire chain of phase space files generated by the TrueBeam VirtuaLinac system in clinical treatment plans. Good agreement was obtained between the MC simulation and the clinical golden data for both flattened and FFF beams. The relative magnitude of agreement between MC and golden beam data presented in this research may assist a physicist in terms of the percent dose deviation that one may expect when using MC data for verification purposes.