PO-1609 Clinical validation of a GPU-based MC dose engine of a commercial TPS for PBS proton therapy. (August 2021) - Fracchiolla, F.; Engwall, E.; Janson, M.; Tamm, F.; Lorentini, S.; Fellin, F.; Bertolini, M.; Algranati, C.; Righetto, R.; Farace, P.; Amichetti, M.; Schwarz, M.