应用MRA评价基底动脉迂曲与椎动脉优势间的关系

目的探讨基底动脉迂曲与椎动脉颅内段优势动脉之间的关系。方法回顾性分析110例1.5T磁共振血管成像(MRA)检查者。测量椎动脉颅内段管径及基底动脉的长度与管径,观察双侧椎动脉是否存在椎动脉优势及基底动脉有无迂曲,并对二者进行关联性分析。结果①左侧椎动脉优势占19.09%(21/110),右侧椎动脉优势占7.27%(8/110)。②基底动脉无迂曲者占75.45%(83/110),有迂曲者占24.55%(27/110),其中向左凸型6.36%(7/110),向右凸型占18.18%(20/110)。③椎动脉颅内段优势动脉与基底动脉迂曲相关(r=0.61,P=0.000)。结论椎动脉颅内段存在优势动脉可引起基底动脉迂曲。

Magnetic resonance angiographic study of the relationship between basilar artery bending and vertebral artery dominance

Objective To investigate the relationship between basilar artery bending and vertebral artery dominance.Methods A total of 110 subjects underwent 1.5T magnetic resonance angiographic(MRA) were involved in this study.The diameter of intracranial segment of vertebral artery,the diameter and length of basilar artery were measured.The morphology of the intracranial segment of vertebral artery and basilar artery.Correlation between them were analyzed.Results ①Vertebral artery left and right dominance were in 19.09%(21/110) and 7.27%(8/110).②The number of the basilar artery running straight and tortuous were in 75.45%(83/110)and 25.54%(27/110)respectively.The basilar artery bending to the left and right were respectively 6.36%(7/110) and 18.18%(20/110).③A significant correlation was found between basilar artery bending and dominance of intracranial segment of vertebral artery(r=0.61,P=0.000).Conclusion The intracranial segment of vertebral artery dominance leads to basilar artery tortuous.