Abstract: A patient support table utilized when a target such as the circulatory organs of a patient is radiographed with an X-ray camera includes a hydraulic multi-stage piston-cylinder unit of which the top piston is driven in the vertical direction by at least two stages for supporting the patient for a sufficient distal mounted upright on the base of the table; a drive unit for driving the pistons in the axial direction; a multi-stage supporting device of which top moves together with the top of the piston-cylinder unit by at least two stages for supporting an overhanging load exerted by the patient, mounted upright on the base beside the piston-cylinder unit; and, a table top supported by the piston-cylinder unit and the support device, for supporting a patient lying on its surface.

Abstract: As mat is used in an X-ray diagnostic apparatus such as an X-ray CT apparatus. This mat comprises: a foaming plastic plate having at least major surfaces and edge portions, a biological body under medical examination being positioned above one of the major surfaces; and a waterproof sheet having an X-ray absorption coefficient higher than that of the foaming plastic plate, for covering the foaming plastic plate in such a manner that planes of the waterproof sheet at said edge portions of the foaming plastic plate are not positioned in parallel with parallel planes of the major surfaces.