Fluoroscopy is a medical imaging technique that employs intermittent bursts of X-ray beams to display internal organs and tissues in motion on a computer screen in real time. Unlike standard X-rays, which provide static images like photographs, fluoroscopy offers dynamic, continuous images similar to a video (Keat, 2001)

Gastrointestinal (GIT) imaging is a procedure that examines the gastrointestinal tract using fluoroscopy. The GIT encompasses the pharynx (throat), esophagus (the tube connecting the throat to the stomach), stomach, and both the small and large intestines. Barium, a naturally occurring element that appears white on X-rays, is used in these tests. Administered as a flavored drink (similar to a milkshake), barium coats the walls of the digestive tract when swallowed, making the shape of the upper digestive tract clearly visible on an X-ray. Without barium, the upper digestive tract would be nearly invisible on the X-ray image (Keat, 2001)