An X-ray fluoroscopic imaging apparatus is capable of easily setting a region of interest and maintaining a source object distance, such as in cases where a mechanism for moving a top board upward and downward is not provided or even in cases where it is desired to perform control without moving the top board upward and downward. In some examples, a C-arm supports an X-ray tube and a flat panel detector to face each other. An examination table equipped with a movable top board is movable in a longitudinal direction and inclinable. The movable top board may be moved in the longitudinal direction in a state in a which an inclination angle is maintained until a position in a perpendicular direction with respect to the movable top board after inclination changed matches a position in the perpendicular direction with respect to the movable top board before the inclination with respect to a height in the vertical direction and move a C-arm by a distance moved in parallel to a horizontal plane.
