This document describes the key components of a CT scanner, including the gantry, x-ray tube, detector array, high voltage generator, and patient support couch. The gantry houses the x-ray tube, detector array, and other components and rotates around the patient. The x-ray tube produces x-rays, while the detector array detects the x-rays that pass through the patient and produces images. A high voltage generator supplies power to the x-ray tube. The patient lies on a support couch that positions them for imaging and must be made of material that does not interfere with the x-rays.