A CT colonography requires the use of ________ as a contrast medium.

Name: A CT colonography requires the use of ________ as a contrast medium.
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A CT colonography does not require the use of a contrast medium, but instead relies on the insufflation of air into the colon to achieve distention for imaging. Barium sulfate and iodinated rectal contrast are used in other types of colorectal imaging exams, such as barium enemas or CT enterography, but not in CT colonography.

A CT Colonography Requires the Use of ________ as a Contrast