2409: Investigation of center-of-axis offsets in ion chamber-based profile measurements in 1.5T MR-Linacs. - Episkopakis, Anastasios; Margaroni, Vasiliki; Karaiskos, Pantelis; Marinos, Nikolas; Pappas, Eleftherios P. (Radiotherapy & Oncology, 2024)