The contrast medium that is instilled into the rectum to outline the colon and rectum for a radiologic procedure is ________

A) iodine
B) thallium
C) gallium
D) barium


D
Explanation: A) Iodine is only given intravenously.
B) Thallium is only given intravenously.
C) Gallium is only given intravenously.
D) Correct!

Health & Biomechanics

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