The Clinical Research Of Internal Carotid Artery System Atherosclerosis And Cerebral Infarction Types In The Old

ObjectiveTo study the different types and pathogenesis of acute cerebral infarction caused by atherosclerotic internal carotid artery(ICA) and cerebral middle artery(MCA) stenosis or occlusion.MethodsTaken from July 2008-July 2009 hospitalized patients with acute cerebral infarction, thirty-four cases detected stenosis or occlusion of internal carotid artery and/or middle cerebral artery by CTA. Classified the cerebral infarction based on the characteristics of the MRI an DWI, and the existence of the stenosis or occlusion of ICA and MCA as well as the degree of stenosis was analyzed.ResultsThirty-four patients with single-vessel lesions in 9, two vessel lesions in 25 cases. 59 vascular lesions with 29 light-moderate stenosis,30 severe stenosis-occlusion.48 hemisphere cerebral infarction, corresponding to 48 vascular lesions,33 internal carotid artery and 15 middle cerebral artery.ConclusionsIn patients of vascular imaging with ICA stenosis or occlusion, the Territorial Infarction(TI) was the most common, followed by Cerebral Watershed Infarction(CWSI) and Lacunar Infarction(LI). These three types of cerebral infarction was positively correlated with vascular stenosis. The pathogenesis of Territorial Infarction(TI) is mainly through the role of vessel lesions and collateral circulation Willis ring to complete. Both the pathogenesis of Anterior Cerebral Watershed Infarcion and Posterior Cerebral Watershed Infarction is micro-embolism. While the pathogenesis of Internal Cerebral Watershed Infarction is the large antery lesions. Patients with cerebral infarction should further do CTA to examine the vascular stenosis, aneurysms, blood clots and plaque. Early vascular intervention can be done to save the ischemic penumbra, reduce neurological damage and prevent the recurrence of cerebral infarction in the patients with vascular stenosis or occlusion.