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Fig. 3D. —Focal nodular hyperplasia in 38-year-old woman with atypical features on unenhanced T1-weighted image and typical enhancement after administration of mangafodipir trisodium. Note usefulness of gadolinium chelates to reveal additional lesions. Gadolinium-enhanced dynamic T1-weighted gradient-recalled echo MR images obtained during delayed phase. Note that strong enhancement seen during arterial dominant phase has faded and that lesion located in segment IV is no longer visible. Note delayed accumulation of gadolinium chelate in scar of lesion in left lobe (arrow).