FLASH in the Clinic Track (Oral Presentations) DOSIMETRIC EVALUATION OF A NOVEL COLLIMATOR DESIGN FOR CONCURRENT MURINE HEMITHORAX IRRADIATIONS USING PROTON FLASH-RT. (February 2022) - Mossahebi, S.; Poirier, Y.; Gerry, A.; Repetto, C.; Vujaskovic, Z.; Jackson, I.; Sawant, A.