Fig. 6.

A 34-year-old male with a history of two transient ischemic attacks and normal neurological examination. Standard MRI was normal. a DWI (b = 1,000). b PASL sequence shows hypoperfusion in the distribution of the right MCA. c Contrast perfusion is concordant with PASL. DSA shows obliteration of the right MCA with very good collateral flow from the d ipsilateral and also e contralateral vascular territories. DWI, diffusion-weighted imaging; PASL, pulsed arterial spin labeling; MCA, middle cerebral artery; DSA, digital subtraction angiography