Fig. 3

Matched areas of decreased CBF (a) and CBV (b) in the right pons (arrows) indicating an irreversible infraction in a 72 year old man. CTA (c) is negative for arterial filling defects, indicating its lacunar nature. NCCT (d) is equivocal. A right hemipontine acute infarction was confirmed on MRI that was obtained 4 days later as shown on DWI/ADC (e) and corresponding FLAIR (f)