upper GI series
Pronunciation: (UH-per ... SEER-eez)
A series of x-ray pictures of the esophagus, stomach, and duodenum (the first part of the small intestine). The x-ray pictures are taken after the patient drinks a liquid containing barium sulfate (a form of the silver-white metallic element barium). The barium sulfate coats and outlines the inner walls of the upper gastrointestinal tract so that they can be seen on the x-ray pictures. Also called upper gastrointestinal series.
Source: NCI Dictionary of Cancer Terms
Caption: Barium swallow. The patient swallows barium liquid and it flows through the esophagus and into the stomach. X-rays are taken to look for abnormal areas.Date last modified: 2009-07-21