What is GI angiography primarily used to diagnose?

GI angiography is primarily utilized to diagnose hemorrhage of unknown cause. This procedure uses contrast dye and X-ray imaging to visualize blood vessels in the gastrointestinal tract. When a patient presents with gastrointestinal bleeding and the source is unclear, GI angiography can help identify where the bleeding is occurring by highlighting any active bleeding sites or vascular anomalies.

While it may assist in examining conditions like cholelithiasis (gallstones), uncontrolled bleeding, or bleeding related to peripheral vascular disease, these are not the primary indications for this specific imaging study. The primary strength of GI angiography lies in its capability to pinpoint bleeding sources, making the diagnosis of hemorrhage its main focus. This specificity is crucial in guiding subsequent management and treatment options for patients.