Fig. 1.

Ischemic stroke after COVID-19 vaccination. Brain MRI demonstrates an acute ischemic stroke in the left basal ganglia region, with hyperintense signal on FLAIR (arrow in a), associated with restricted diffusion, seen on diffusion-weighted imaging (arrow in b), with reduced signal on apparent diffusion coefficient, without gadolinium-enhancement (c), affecting the posterior limb of the internal capsule, in the territory of the left anterior choroidal artery, which is a small-caliber artery not usually seen on MR-angiography. The magnetic resonance angiography is normal (not shown).