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Head magnetic resonance imaging after onset. A: Diffusion-weighted image (DWI) showing a high-intensity area extending from the basal ganglia to the corona radiata of the left cerebrum and multiple small high-intensity areas at bilateral cerebral cortices. B: Fluid-attenuated inversion recovery showing several small high-intensity areas in the same locations detected on DWI (arrowheads). C: Magnetic resonance angiography demonstrating no steno-occlusive changes.
