Barium sulphate is the contrast agent of choice in diagnosing obstruction of the small intestine.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001466:Barium Sulfate; D002648:Child; D002675:Child, Preschool; D003287:Contrast Media; D005260:Female; D006801:Humans; D007415:Intestinal Obstruction / Q000000981:diagnostic imaging*; D007421:Intestine, Small; D008297:Male; D008875:Middle Aged; D011859:Radiography
D003287:Contrast Media; D001466:Barium Sulfate