Certain exemplary method and/or apparatus embodiments herein can include—a support frame, —a movable gantry that supports an x-ray source and an x-ray sensor in correspondence with the x-ray source and that is movable relative to the support frame, —a patient positioning accessory support member configured to support a patient positioning accessory of a specific type that is adapted to be used in the apparatus for conducting a specific examination on a patient, where the patient positioning accessory comprises at least one passive identification element that identifies the specific type of the patient positioning accessory, and the apparatus further comprises an active identification system that is configured to cooperate with the at least one passive identification element of the patient positioning accessory in order to identify the specific type of the patient positioning accessory.