a barium enema, can be used instead of or in addition to colonoscopy. For this test, a liquid called barium is inserted into the colon using a small tube through the anus. X-rays are then taken of the abdomen with the barium inside. This liquid is seen on the X-ray and is used to...
Another method of receiving contrast dye is orally. Patients will be given either barium sulfate or Gastrografin® to drink. The barium sulfate is a thick, chalky substance that does not taste very pleasant. Gastrografin® is more of a yellow color, because it contains iodine, and reportedl...