Final answer:
CT x-ray tubes require a rotation mechanism, an array of detectors, and multiple images to produce highly-detailed images.
Step-by-step explanation:
CT x-ray tubes require a rotation mechanism to move around the patient and capture x-ray images from different angles. This allows for the production of highly-detailed images using complex computer image processing.
They also require an array of detectors on the other side of the patient to register the x-rays. These detectors work alongside the x-ray tube to rotate together and capture multiple images of different slices of the patient's body.
Additionally, CT x-ray tubes may require multiple images to be taken as the patient moves through the scanner on a table, in order to produce three-dimensional information.