Clinical study of the relationship between Willis arterial loop variation and intracranial aneurysms / 中国医师杂志

ABSTRACT

Objective To explore the relationship between the changes of the cerebral arterial circle of Willis and the occurrence of intracranial aneurysms in the diagnosis of digital angiography.Methods From December 2014 to January 2014,144 cases of intracranial aneurysms were treated in the First Affiliated Hospital of Luzhou Medical University.According to the location of the aneurysm of all patients,the patients were divided into the anterior communicating artery and the posterior communicating artery aneurysms.The relationship between two groups of patients was compared by the sex,age,and the length of the intracranial aneurysms.The relationship was analyzed between the Willis ring and the intracranial aneurysms.The sensitivity and specificity were compared with the surgical results.Results A total of 144 cases of intracranial aneurysms were detected by digital angiography,68 patients in anterior communicating artery aneurysms,and posterior communicating artery aneurysm in 76 cases.There were no significant differences in sex distribution,age distribution,and length of tumor in the patients with anterior communicating artery aneurysms and the patients with a group of patients with a posterior communicating artery aneurysm.The anterior communicating artery aneurysm group,A1 segment of slender or absence rate was up to 79.41％,and communicating artery aneurysm group A1 segment of slender or absence rate was only 52.63％,two groups were compared with statistical significance (P ＜ 0.05).In the anterior communicating artery,the posterior cerebral artery was 63.24％,and the right and left (unilateral) embryonic cerebral artery was 59.21％ in the middle cerebral artery.There was no significant difference in the sensitivity and specificity of CT angiography (CTA) test results between two groups(P ＞ 0.05).Conclusions Digital angiography can be more accurate in the diagnosis of intracranial aneurysms.Anterior communicating artery aneurysm occurrence is closely related to A1 segment of slender,and absent and bilateral embryo brain artery.Communicating artery aneurysms is more closely related to unilateral embryonic brain artery.