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NCI Dictionary of Cancer Terms

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ferumoxytol  listen  (fayr-yoo-MOK-sih-tol)

  A nanoparticle form of iron made in the laboratory that is being studied for use in iron replacement therapy, and as a contrast agent for magnetic resonance imaging. Contrast agents are substances that are injected into the body and taken up by certain tissues, making the tissues easier to see in imaging scans.