The present invention provides an X-ray imaging apparatus and X-ray controlling method which allows appropriate X-ray control irrespective of the type and position of a subject. The colostomy bag belt may include a liquid permeable layer fixed against a liquid impermeable layer to form a waste channel. 51P cladding layer, an undoped or n-type Inx1Ga1-x1As1-y1Py1 optical waveguide layer, an Inx3Ga1-x3As1-y3Py3 compressive-strain quantum-well active layer, an undoped or p-type Inx1Ga1-x1As1-y1Py1 optical waveguide layer, a p-type In0. The apparatus defines a rig assembly comprising a top drive mechanism, a rotary drive mechanism, and a fluid circulating device.