When a Nonionic Contrast Agent Is Injected into an Artery

question 24

Multiple Choice

When a nonionic contrast agent is injected into an artery such as the carotid,visualization of the artery occurs because

• A)blood in the artery chemically changes into iodine.
• B)iodine in the contrast agent mixes with blood and makes the artery radiopaque.
• C)the contrast medium turns the vessel radiolucent.
• D)the contrast agent changes into a radiopharmaceutical.

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