Upper gastrointestinal series is the X-ray examination of the upper gastrointestinal tract that includes oesophagus, stomach, and the first part of the small intestine called the duodenum. The ...

Barium is a liquid that shows up the outline of your organs when you have an x-ray. You might have this test to check part of your digestive system. Barium is a white liquid that shows up clearly on ...