(Upper GI Series; Barium Swallow; Barium Meal)
Upper gastrointestinal series – Definition
This is a series of x-rays of the esophagus, stomach, and duodenum (the first part of the small intestine). Together, the esophagus, stomach, and duodenum are called the upper gastrointestinal (GI) tract, or upper digestive system. The x-rays are taken during and after drinking a chemical called barium. The barium solution is a thick, white, chalky, milkshake-like liquid. It coats the inside lining of your GI tract. This makes the GI tract show up better on the x-ray.