According to one embodiment, a CT scanning tabletop includes a tabletop body and an aid. The tabletop body has a placement surface where a subject is to be placed, and is formed in a manner that an X-ray transmission loss by one end portion in a longitudinal direction thereof is smaller than an X-ray transmission loss by a portion of the tabletop body other than the one end portion. The aid is provided on the one end portion in a manner that the aid is attachable and detachable by moving in advancing and retreating directions toward and away from the placement surface, the aid is configured to hold a part of the subject.