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contrast agent

KON-trast AY-jent

ˈkɒntræst ˈeɪdʒənt

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Syllable breakdown

contrastagent

Dictionary meaning

a substance administered before or during a medical imaging examination to enhance the visibility of internal structures; iodine-based agents are used in CT and X-ray, gadolinium in MRI, and microbubbles in ultrasound; enhances differentiation between normal and abnormal tissues

Synonyms: contrast medium, contrast dye

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