Fig 1.
Topographical Distribution of Acute Ischemic Stroke in Internal Carotid Artery (ICA) or Middle Cerebral Artery (MCA) Territory.
A. Single acute infarct in left lenticulostriate artery of MCA territory, without obvious stenosis of left MCA. Small artery occlusion was the most possible etiologic subtype. B. A single acute infarct in right lenticulostriate artery territory, with obvious stenosis in M1 segment of RMCA. Large artery atherosclerosis (LAA) and parent artery occluding penetrating artery was the etiologic subtype and most possible stroke mechanism. C. Multiple acute infarcts (including internal watershed infarcts, cortical watershed infarcts, and small cortical infarct) in right MCA territory, with obvious stenosis in M1 segment of right MCA. The etiologic subtype was considered LAA. D. Single acute infarct in left anterior choroidal artery of ICA territory, with obvious stenosis in C7 segment of left ICA. LAA and parent artery occluding penetrating artery was considered as the etiologic subtype and most possible stroke mechanism. E. Multiple acute infarcts (including territorial infarct and penetrating artery infarct) in left ICA territory with occlusion of left ICA. The etiologic subtype was considered LAA.
Fig 2.
Flow chart of patients enrollment.
Table 1.
Demographic Features of 1172 patients with acute ischemic stroke in ICA versus MCA territory.
Table 2.
Admission symptoms and signs of 1172 patients with acute ischemic stroke in ICA versus MCA territory.
Table 3.
Clinical, imaging features and outcome of 1172 patients with acute ischemic stroke in ICA versus MCA territory.
Table 4.
Multivariable logistic regression for relative factors associated with acute ischemic stroke in ICA rather than MCA territory.