Assembly of a carrier (3) for supporting a patient, an immobilisation mask (2) and connection means (13, 21, 22) for connecting the carrier (3) with the immobilisation mask (2), wherein the connection means (13, 21, 22) contain a profile (1) that is provided on a first side to be connected to the immobilisation mask (2) and on a second side contains first connection means (21) for connecting the immobilisation mask (2) to the carrier (3), the connection means (13, 21, 22) comprising carrier connection means (13) on the carrier (3), the first connection means (21) being provided to engage the corresponding carrier connection means (13), wherein a swivel and a swivel anchor point (36) are provided to cooperate such that when swivelling the swivel arm (34) around the swivel anchor point (36) towards the carrier (3), the first connection means (21) are guided to the connected state.
