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What does an upper GI test do, and how does it work?

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Upper GI tests use X-rays to examine the esophagus, stomach, and first part of the small intestine (the duodenum).

For these tests, you need to drink a chalky liquid called barium. As the barium passes through the digestive tract, it fills and coats the esophagus, stomach, and first part of the small intestine, making them more visible with X-rays. Then a fluoroscope machine is held over the part of the body being examined and transmits continuous images to a video monitor.

From: Imaging Tests for Digestive Diseases WebMD Medical Reference

SOURCES: 

Radiological Society of North America (RSNA). 

National Institute of Diabetes and Digestive and Kidney Diseases Clearinghouse (part of National Institutes of Health).

Johns Hopkins Medicine. 

 

Reviewed by Minesh Khatri on August 30, 2019

SOURCES: 

Radiological Society of North America (RSNA). 

National Institute of Diabetes and Digestive and Kidney Diseases Clearinghouse (part of National Institutes of Health).

Johns Hopkins Medicine. 

 

Reviewed by Minesh Khatri on August 30, 2019

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What do upper GI tests diagnose?

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