Analysis of anteroposterior aneurysms on communicating branches to the hemodynamic changes of Willis circle

Objective:To research the relationship between anteroposterior aneurysms on communicating branches and the hemodynamic changes in Willis circle.Methods:Cerebral DSA findings in 208 cases were retrospectively analyzed.Results:A1 dominant signs in aneurysms group of the anterior communicating atery was more common than those in the control group( P 0.01).In aneurysms on the junction of internal carotid and posterior communicating artery,no difference was seen between aneurysms getting blood supply from basilar artery and those getting blood supply from other artery( P 0.05).Conclusion:The development of cerebral aneurysms on anterior communicating segment is related with the hemodynamic changes in the anterior circle of Willis,while hemodynamic changes in the posterior circle of Willis has no relation to the aneurysms on the ipsilateral internal carotid-posterior communicating artery junction.