Lesion patterns and mechanism of cerebral infarction caused by severe atherosclerotic intracranial internal carotid artery stenosis

Lesion patterns in patients with severe IICA stenosis were different from those with severe EICA stenosis. The hypoperfusion mechanism leading to BZI was more important for patients with severe IICA stenosis than for those with severe EICA stenosis. Embolisms leading to PI and/or PAI were more important for patients with severe EICA stenosis.