Distribution of Intracranial Artery Stenosis and Carotid Artery Stenosis in Patients with Cerebral Infarction

Aim:To explore the characteristics of distribution of intracranial artery stenosis and carotid artery stenosis in patients with cerebral infarction.Methods:3.0T MRA was used to assess intracranial artery stenosis and carotid artery stenosis in 186 patients with cerebral infarction and 121controls.Results:The 164 subjects with intracranial artery stenosis or carotid artery stenosis were found in 186 patients with cerebral infarction, the intracranial artery stenosis was 83.54%,the carotid artery stenosis was 51.83%,among them,there were 60 subjects with simplex anterior circulation artery stenosis(60/164,36.59%) including 50 intracranial artery stenosis and 10 carotid artery stenosis,38 subjects with simplex posterior circulation artery stenosis(38/164, 23.71%) including 21 intracranial artery stenosis and 17 carotid artery stenosis,and 66 subjects with complex artery stenosis coexisting in intracranial artery and carotid artery(66/164,40.24%).In the patients aged 46 to 60 years,the proportion of simplex anterior circulation artery stenosis was high(54.05%),and middle cerebral artery was affected frequently.In contrast,the proportion of simplex anterior circulation artery stenosis was lower(30.08%),and the proportions of simplex posterior circulation artery stenosis(26.02%) and complex artery stenosis(43.90%) was higher respectively in the patients aged 60 years and over(P0.05).Conclusion: In the patients aged 46 to 60 years,the prevalence of simplex anterior circulation artery stenosis was higher than that of other location.The prevalence of simplex posterior circulation artery stenosis and complex artery stenosis increased with the ages significantly.