Perivascular and Subarachnoid Fluid-Attenuated Inversion Recovery Hyperintensities Related to Delayed Gadolinium Leakage After Stroke

A 74-year-old man presented with right watershed infarction (initial gadolinium-injected MRI, Figure). Renal function was normal. MRI 4 hours later showed ipsilateral perivascular spaces (PVS) and subarachnoid fluid-attenuated inversion recovery (FLAIR) hyperintensities, probably related to stroke-associated delayed gadolinium leakage (Figure). MRI after 10 days showed complete resolution of subarachnoid/perivascular abnormalities (Figure).

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