The vascular territory affected will determine the exact symptoms and clinical behavior of the lesion: anterior circulation infarct anterior cerebral artery infarct middle cerebral artery infarct lacunar infarct striatocapsular infarct posterior circulation infarct posterior cerebral artery infarct cerebellar infarct brainstem infarct Pathology Interruption of blood flow through an intracranial artery leads to deprivation of oxygen and glucose in the supplied vascular territory.