[en] An X-ray apparatus is described that includes a floor mounted enclosure, a patient supporting table on the enclosure, an X-ray tube casing mounted for angulating in the enclosure, X-ray imaging devices unitarily supported for angulating on a cantilever arm located above the table, and an extensible and contractible and optionally removable link arm for coupling the tube casing and image devices, respectively, to enable their coordinate longitudinal angulation or selectively to enable maintaining the X-ray tube and imaging devices in a fixed vertical relationship