Upper Gastrointestinal Series

**Semantic type:** Diagnostic Procedure

**Definition:** An x-ray examination of the esophagus, stomach and first part of the small intestine following coating with barium solution via ingestion.

**Synonyms:** - Barium-Swallow X-ray - Upper GI - Upper GI Series - Upper Gastrointestinal Tract Radiography - upper GI series - upper gastrointestinal series