A radiation imaging apparatus adds a compression force to the subject and a belt 31 separated from the surface of a table 13 moves to a lifting position by providing the belt 31 with tension and rotation of a wind-up roller 34 wherein in use belt 31 lifts from the surface of the table 13 and compresses the abdomen of the subject M and, after rotation of the wind-up roller 34 ends X-ray imaging occurs.