Studies are performed with a machine called a fluoroscope. This is a device that has a tilting table connected to an x-ray machine and a television screen. The fluoroscope produces a real-time x-ray image on the TV screen. The images on the screen can then be turned into permanent images, which are used for diagnosis. Many fluoroscopic procedures use a liquid contrast. This liquid comes in different forms, which make it much easier for x-rays to show internal parts of the body such as the stomach, esophogus, or colon. Images are taken on the fluoroscope as the contrast material passes through these parts of your body.