The x-ray machine broadly includes both of the following. If presented separately, you may be referring to a portable machine, the general type used to take photographs, receiving converted rays of the equipment is photographic film. (Refer to the hospital to take x-ray film)
Real-time imaging to receive converted rays of the equipment is the intensifier + camera. The principle is the same as above, can be understood as a camera into a video camera, (see the station airport security equipment)
Industrial ct is more complex. It is through the object full-angle irradiation of the data obtained through computer processing, re-modeling, to get a three-dimensional image of the object to restore.
Industrial ct is more complicated.