Study of digital subtraction angiography in patients with ischemic cerebrovascular stroke

Objective To investigate the characterisitics of digital subtraction angiography(DSA)in patients with ischemic cerebrovascular stroke.Methods 243 patients with ischemic cerebrovascular stroke were detected by DSA in order to analyze the distribution and the occurrence of intra-extracranial vascular.Results The 243 cases of ischemic cerebrovascular stroke,the rate of intra-extracranial vascular stenosis was 74.07%(180 cases).45.46%(82 cases)was in anterior circulation and 28.89%(52 cases)was in the posterior circulation and 25.56%(46 cases)was in the anterior-posterior circulation.26.67%(48 cases)was of intracranial stenosis,47.78%(86 cases)was of extracranial stenosis and 25.56%(46 cases)was both.As for incidence of single or dual stenosis among 365 vessels with arteriostenosis,single stenosis amounted to 82 cases and dual to 98 cases.Extracranial stenosis occurred most in extracranial part of internal carotid artery.Intracranial stenosis more occurred in middle cerebral artery.Conclusions DSA can be accurate evaluation the distribution and degree of cranial vessels stenosis.So as to provide basement for the clinical treatment.