PD-0893 Enhancing patient safety with log file analysis : perFRACTION® optimal gamma criteria for VMAT QA. (May 2022) - itta, F.; Mistretta, G.M.; Ceroni, P.; Gutierrez, V.; Campanaro, F.; Morini, L.; Marino, F.; Koubegnery, S.; D'Angelo, E.; Guidi, G.