Patient-specific quality assurance for SBRT treatments using Gafchromic EBT3 and FILM QA software.
Stella G., Cavalli N., Bonanno E., Amico A., Gueli A.M., Girlando A., Pascoli F., Scotti L., Marino C.
V - Biofisica e fisica medica
Aula 32C-2 - Venerdì 21 h 15:30 - 18:30
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In order to optimize the procedures for VMAT patient-specific quality assurance for SBRT treatments, different plans were verified by two different methods: a routinely pre-treatment verification system, based on EPID images and EPIQA software and dose map measurements using EBT3 Gafchromic film dosimetry digitized with Epson 10000 XL and analyzed with FILM QA software. Pre-treatment verifications were quantified using the global gamma index approach with 3%/3mm criteria and 95% passing rate. Under particular experimental conditions, the use of EBT3 film dosimetry analyzed with FILM QA software represents an accurate QA method for VMAT-SBRT treatment plans.