Which of the following involves the oral administration of barium and is also called an upper GI series?
A. Barium swallow
B. Cholangiography
C. Barium enema
D. Retrograde pyelogram
E. Myelography
A. Barium swallow
A barium swallow, also called an upper GI series, involves the oral administration of a barium sulfate drink to help diagnose and evaluate obstructions, ulcers, polyps, diverticulosis, tumors, or motility problems of the esophagus, stomach, duodenum, and small intestine.
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