Evaluation of Ischemic Cerebrovascular Disease with CT Angiography of Head and Neck

Objective:To study the character of extra-and intracranial artery stenosis in patients with ischemic cerebrovascular disease and the application of CT angiography of head and neck.Methods:172 cases of ischemic cerebrovascular disease including 79 patients with infarction,93 patients with transient ischemic attack were analysed the findings of stenosis and occlusion of extra-and intracranial artery and it′s relationship with the type of infarction.Results:CT angiography of 164 cases (95%) were satisfied with diagnosis.Artery stenosis was found in 125 cases.Among them,there were 74 cases of stenosis of cerebral artery,32 cases of carotid stenosis,19 cases of co-occurrence of carotid and cerebral artery stenosis.The frequency of cerebral artery stenosis and co-occurrence of carotid and cerebral artery stenosis was higher in infarction group than TIA group,there was significant difference between the two group for the frequency of co-occurrence of carotid and cerebral artery stenosis.The position and degree of artery stenosis was correlated to the large area cerebral infarction and watershed infarction,but it was of no significant correlation with the lacuna infarction within the region of basal ganglia,centrum semiovale and cortex.Conclusion:The frequency of both extra-and intracranial artery stenosis are high in patients with ischemic cerebrovascular disease.Cerebral artery stenosis and co-occurrence of carotid and cerebral artery stenosis are important risk factors for cerebral infarction.The position and degree of extra-and intracranial artery stenosis and circle of Willis are correlated to the type of cerebral infarction in a certain extent.CT angiography of head and neck can be useful in detection of extra-and intracranial artery stenosis simultaneously.