These days, medical X-rays come in multiple formats: plain film used in dental exams and doctors» offices; fluoroscopy, which bounces a continuous X-ray beam off contrast
agents you've either injected or ingested, providing a moving real - time image of arteries and intestines; and the computed tomography (CT) scan, which couples a
powerful computer with a circular array of
extremely sensitive detectors to turn X-rays into detailed cross sections of the body.