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Fluoroscopy is a procedure that combines x-ray imaging with a fluorescent screen, an image intensifier, and a TV-like camera and monitor to provide real-time, live images. It is particularly helpful in diagnosing problems of the digestive tract, kidneys and gallbladder. A contrast agent, such as barium, is often used to highlight the area and enable the physician to see the movement of the intestines as the barium moves through them.