Patent ID: 8019041

Claim:
An X-ray diagnosis apparatus comprising: an X-ray tube which generates X-rays; a detector which detects X-rays generated by the X-ray tube and transmitted through a subject; a C-arm which is equipped with the X-ray tube and the detector; an arm support mechanism which rotatably supports the C-arm; a top on which the subject is placed; a first moving mechanism which supports the C-arm or the top so as to change a relative positional relationship along a horizontal direction between the C-arm and the top; a second moving mechanism which supports the C-arm or the top so as to change a relative positional relationship along a vertical direction between the C-arm and the top; and a control unit which controls the arm support mechanism, the first moving mechanism, and the second moving mechanism so as to a perpendicular extending from a focus of the X-ray tube intersects the top at a predetermined position thereon, and a distance interval between the X-ray tube and the predetermined position is fixed during rotation of the C-arm.