Figure 4.

(Illustrative case 1): (a) Magnetic resonance imaging brain, diffusion-weighted image of the case showing subacute infarct in the left occipital region (b) Magnetic resonance angiography image showing complete occlusion of the right supraclinoid internal carotid artery and severe narrowing of the left supraclinoid internal carotid artery with collateral formation (c and d) Intraoperative images of the same patient depicting encephalo-duro-arterio-synangiosis (posterior branch of superficial temporal artery based) and multiple bilateral fronto-parietal burr holes