THE POTENTIAL FOR ORGAN-AT-RISK SPARING WITH NON-COPLANAR DYNAMIC-COLLIMATOR TRAJECTORY RADIOTHERAPY (COLLI-DTRT) FOR HEAD AND NECK CANCER. (December 2022) - Bertholet, Jenny; Zhu, Chengchen; Mackeprang, Paul-Henry; Loebner, Hannes A; Guyer, Gian; Volken, Werner; Elicin, Olgun; Aebersold, Daniel M; Stampanoni, Marco FM; Mueller, Silvan; Fix, Michael K; Manser, Peter