Which is an example of a negative contrast agent?
A)Barium
B)Iodine
C)Air
D)None of the above

Name: Which is an example of a negative contrast agent? A)Barium B)Iodine C)Air D)None of the above
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An example of a negative contrast agent is air. Nitrous oxide and carbon dioxide are also negative contrast agents. Negative contrast agents do not absorb radiation and produce a decreased radiographic density.

Which Is an Example of a Negative Contrast Agent