William gaskin is scheduled for a procedure tomorrow at the diagnostic center. he will receive an infusion of a radiopaque contrast medium, barium sulfate, into the rectum. the contrast medium will remain in the lower intestinal tract while x-ray films are obtained of the lower gi tract. this procedure is called.

The correct answer is: barium enema.

Barium enema is technique used for detection of changes or abnormalities in the large intestine-colon via X-rays so it is often called colon X-ray. Barium envelops the lining of the colon so it is clear to see silhouette of the colon. This type of diagnosis is used in the case of abdominal pain, rectal bleeding, chronic diarrhea ...