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High relaxivity contrast at 0.064T. (a) Images from a 27‐year‐old patient treated with ferumoxytol for iron deficiency anemia. Ferumoxytol is a high‐relaxivity contrast agent, which causes venous structures to be hyperintense on T1 and hypointense on T2 and T2‐fluid‐attenuated inversion recovery. (b) The same patient was imaged with a magnetic resonance angiography sequence to visualize arterial structures, including the internal carotid artery (ICA) and middle cerebral artery (MCA).
