Contrast Agents: Cause for Concern?

What to know before you have an imaging test

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If your doctor has referred you for an imaging test like an X-ray, ultrasound, computed tomography (CT) scan, or magnetic resonance imaging (MRI) scan, the order may be for it to be done with a contrast agent (sometimes casually called a contrast dye, though that is inaccurate since it does not actually dye your insides). […]

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