Illustration copyright 2003 Nucleus Communications, Inc. All rights reserved. http://www.nucleusinc.com
A well-lubricated enema tube is inserted gently into the rectum, and then barium contrast material flows slowly into the colon. At certain times, X-ray pictures called spot films will be taken of different areas of the colon.
Jerome B. Simon, MD, FRCPC, FACP - Gastroenterology
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