The Willis Ring Form Of Patients With Cerebral Infarction, Infarct Area And The Relationship Between The Syndrome

Objective:To analyze the MRA morphology of the cycle of Willis of patients with cerebral infarction, and discuss its correlation to the location of infarcts and stroke syndrome.Methods:This study is a retrospective analysis which is based on130patients of cerebral infarction who had hospitalized in encephalopathy department of Dongfang Hospital between September2011and September2012. According to the morphology of circle of Willis on MRA, divid the patients into4teams, analyze their characteristics. To explore the relationship between the morphology of circle of Willis and cerebral infarction site,we divid all the patients into three groups:anterior circulation infarction, posterior circulation infarction and mixed infarction, analyze the relationship between exact morphological characteristics, integrity, each artery of Willis and the location of infarcts. Diagnose the syndrome according to the Syndrome of Stroke quantitative diagnostic standard. We deal with all the data with SPSS19.0statistics.Results:1.The incidence of four types of the circle of Willis is15.4%、28.5%、20%and36.2%. The rate of completeness of anterior circle is43.8%, the rate of complete posterior circle is35.4%, and completeness of the whole circle of Willis is15.4%.2. In the three cerebral infarction sites, there is no statistical difererce in specific type and integrity of the circle of Willis.3. There is no statistical diference in the shortage of ACA-A1and ACOA among the three locations. The rate of PCA-P1shortage in patients who are posterior circulation and mixed infarction is statistically higher than that of anterior circulation infarction, and the rate of PCOA shortage in patients of mixed infarction is abviously higher than those of anterior circulation infarction.4. The stroke syndromes among the four types, the integrity and the lack of artery of the circle of Willis have no statistically significant difference, and the most syndrome of each classification is Phegm.Conclusions:1. Occurrence of the fully complete circle of Willis is low in patients with cerebral infarction.2. Specific sub-type and integrity of the circle of Willis has no significant impact on the cerebral infarction site.3. There are significant differences in the lack of composed arteries of the cycle of Willis among the three locations of infarcts.Shortage of PCA-P1may be able to cause posterior circulation and mixed infarction much more easily, and the shortage of PCOA may lead to mixed infarction.4. The morphology of the circle of Willis has no significant effect on the distribution of stroke syndrome.