MRI
Left occipital cortical and subcortical ill-defined area of abnormal low signal intensity in T1, bright signal intensity on T2 and FLAIR weighted images is noted with predominantly marginal and gyral enhancement in post contrast study (luxury perfusion) and evidence of diffusion restriction. Similar foci of abnormal signal intensity and abnormal diffusion restriction are noted at the left temporo-occipital region. MRA showed complete occlusion of the left internal carotid artery with fetal origin of the left posterior cerebral artery.