Diversified Assessment Of Manifestation Of Anterior Circulation Artery Stenosis Or Occlusion Imaging

Objective: To explore and assess the manifestation of the occlusive cerebrovascular disease imaging. By analysing certain cases of different occlusive cerebrovascular diseases imaging a variety of imaging performance were described and assessed in clinical value to evaluate and guide the clinical treatment and reduce the further development of cerebral infarction. To achieve the full understanding of occlusive cerebrovascular disease and improve clinical quality and patient prognosis by assessing the evolution of occlusive cerebrovascular disease according to medical record, symptoms, signs and image changes.Methods: CT, MRI manifestation of 224 cases of cerebral infarction caused by anterior circulation stenosis or occlusion was analysed and compared.①cerebral infarction location, size, number,shape,edge,signal strength, and artery conditions and so on were observed and concluded, all the clinical data of the cases including patient age, sex, symptoms, signs and past medical history were recorded; relation between infarction site and the clinical symptoms, signs was analysed and concluded;②risk factors for cerebral infarction including hypertension, diabetes, hyperlipidemia, coronary heart disease, smoking history, drinking history and family history were recorded and Logistic regression analysis was applied;③the MRA combined with CTA to measure and record: (1) mean diameter (mm) of internal carotid artery, anterior cerebral artery and middle cerebral artery; (2) diameter (mm) of carotid artery, anterior cerebral artery and middle cerebral artery diameter stenosis, both the left and right; (3) the rate of stenosis was calculated first and then the result determined the degree of vascular stenosis; (4) the infarct size depending on the carotid artery, anterior cerebral, middle cerebral artery occlusion or stenosis was measured, and the infracted heart, and stenosis rate of linear regression and correlation were recorded; (5) whether occlusion or stenosis lead to cerebral sulci, gyrus swelling was recorded.All data was processed with statistical software SPSS 13.0. P<0.05 considered it significant difference.Results:①the risk factors of infarction caused by anterior circulation occlusion or stenosis: comparing 224 cases in infarction group with 108 cases in non-infarction group, there are obvious differences(P<0.05) in infarction group in hypertension, diabetes, hyperlipidemia. Therefore, the patients of high blood pressure, diabetes and hyperlipidemia were prone to anterior circulation infarct.②distribution of infarction for the patients with occlusion or stenosis of carotid artery, anterior cerebral, middle cerebral artery : The 214 cases with single-shot, single lesion were picked out of which the incidence of the middle cerebral artery infarction was the highest, 105 cases, accounting for 49.1% of the total, while the most common site was basal ganglia, for the 79 cases, accounting for 36.9%.There were 47 cases in the middle cerebral artery infarction of basal ganglia group, the incidence was 44.8%. There was statistically significant difference in three groups of vessels(P<0.05); C values were close to 0,including the independence of three vessels, no correlation.③The relation betwwen stenosis rates and blood vessels: the incidence of middle cerebral artery was the highest, positive 66.1%;Middle cerebral artery in the moderate stenosis (55%-75%) was most common, accounting for 46.4%.④Correlation between infarct size and vascular stenosis rate: the infarct<5cm concentrated in the vascular stenosis rate was (55%-75%) , the maximum: followd by 10-15cm infarct, focusing on complete occlusion of blood vessels P<0.0001,meaningful ,r=0.451, there is a significant positive correlation.⑤Correnlation between internal carotid artery,anterior cerebral artery ,middle cerebral artery occlusion or stenosis and the sulci,gyrus swelling P=0.8757,P>0.05,there was no statisitical significance,which showed that there was no significant difference between stenosis and cerebral sulci,gyri.⑥Correlation between intracranial artery ,anterior cerebral artery ang middle cerebral artery occlusion or stenosis and the left,right side:P=0.4706,P>0.05,there was no statistical significance.That also showed there was no significant difference in vascular stenosis and the left and right side.Conclusions:①hypertension,diabetes,hyperlipemia is one of the main dangerous factors of anterior circulation cerbral infarction ,so it is necessary to perform brain CT or MRI on the patient with non-typical symptom early in order to get timely treatment.②The incidence of the middle cerebral artery stenosis or occlusion in anterior circulatory system is the highest and because of the stenosis or occlusion ,the incidence of basal ganglia area of infarction is also higer.③After stenosis or occlusion of arterior circulatory system,so there is no nencessary connection with cerebral sulcus and gyri swelling.But it may be secondery to some patients.In addition,occlusion or stenosis in anterior circulatory system has no significant correlation to the left and right side.④Through the combination of MRA and CTA diagnosis ,not only vascular stenosis of the anterior circulatory system can be classified precisely ,you can also dig out a close relation betwwen infart artery lesion area and degree of stenosis.