Which of the following diagnostic procedures may include a double-contrast study in which the combination of air and barium provides a clearer view of structures and allows identification of small lesions?
A. Barium swallow
B. Nuclear medicine
C. Barium enema
D. Magnetic resonance imaging
E. Myelography
C. Barium enema
The two types of barium enema are single-contrast, in which only barium is instilled into the colon, and double-contrast, in which air is forced into the colon to distend or inflate the tissue, either while the barium is present or after it has been expelled.
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