Background: The cauk of cerebral infarction mainly due to atherosclerosis. There are the racial differences between the principles pathology of intracranial and extracranial stenosis in patients with cerebral infarction. In Europe and North America, the rate of extracranial carotid: atherosclerotic stenois occupy majority, while in Asia the proportion of intracranial stenosis in the brain was significantly higher (in studies in Japan, China Nations, Singapore). In Vietnam still little research on this issue. Object: 110 ischemic stroke patients exduded cardioembolie. Methods: The patients studied by magnetic resonance artery (MRA) 3 Tesla or computerized tomography brain blood vessels (CTA) 16 sequence to determine the vascular lesions inside and outside the skull. Investigation of risk factors as recommended by the World Health Organization in 1996 from which to consider the relationship between a number of risk factors to the state of intracranial stenosis, ocdusion. Rerults: Athroslerosis was 72,8 percent (patient with intracranial stenosis was 65,5 percent, patients with ECA stenosis was 7,3 percent and patient had both intracranial and extracranial stenosis was 5,5 percent). In the intracranial stenosis patients, there are 21,9 percent internal carotid artery, 34,5 percent middle cerebral artery, 2,2 percent anterior cerebral artery, 2,2 percent posterior cerebral artery, 27,6 percent vertebral artery and basilar artery. There are 16,88 percent moderate stenosis, 46,75 percent serious stenosis, 36,36 percent occlusion. Multiple stenosis was 37,7 percent. Diabetes [OR: 4,29 (CI: 1,16-15,77)] and metabolic syndrome [OR: 3,53 (CI: 1,09 - 11,44)] were a higher risk for intracranial stenosis.
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