Fig. 1

A & B: Head and neck CT angiography images showing the left internal carotid artery (LICA) along its course through the neck. The green arrow in both images highlights an area of diffuse narrowing, which may have contributed to reduced cerebral perfusion and subsequent ischemic events.C: Brain MRI using diffusion-weighted imaging (DWI) shows multiple hyperintense areas in the left occipital, parietal, and frontotemporal lobes, consistent with acute cerebral infarction. D: Cerebral angiography image indicating occlusion in the intracranial segment of the left internal carotid artery, with diffuse narrowing in the extracranial segment (green arrow)