Fluoroscopy   Fluoroscopy is an imaging process that is generally used to evaluate the upper and lower gastrointestinal (GI) tract. The process of viewing the lower GI tract is called a Barium Enema. During this exam, a radiologist will be present to view the images while they're being taken. This examination will require some preparation. Your physician's office may schedule your appointment Monday - Friday at Maplewood Imaging Center or Central Triad Imaging Center or Greystone Imaging Center Preparing for Your Barium Enema. What is an Upper GI?