According to one embodiment of an X-ray imaging system, a column, including a first sub column, a second sub column, a third sub column, a first connector, and a second connector, supports an X-ray tube. The first connector connects the second sub column to the first sub column and includes a first rotation axis parallel to a short axis of a tabletop. The second connector connects the third sub column to the second sub column and includes a second rotation axis perpendicular to the first rotation axis and a central axis of the second sub column. The third sub column supports the X-ray tube.
