椎基底动脉延长扩张症的临床与MRA表现

Clinical and MRA Manifestations of Vertebrobasilar Dolichoectasia

目的探讨椎基底动脉延长扩张症(vertebrobasilar dolichoectasia,VBD)的临床表现与磁共振血管造影(MRA)特点,以提高对VBD的认识。方法对经磁共振成像(MRI)确诊的128例VBD患者的临床资料进行回顾性分析,总结其临床表现与MRA的特点。结果临床表现多样,主要表现为缺血性脑血管疾病85例,脑干脑神经压迫损害症状26例,出血性脑血管疾病11例,脑积水6例。基底动脉平均直径为4.9(4.5～5.4)mm,平均长度为34.5(30～39)mm,横向偏离超过基底动脉的起始点到分叉之间垂直连线的平均长度为11.2(10.5～15.1)mm。结论 VBD的临床表现多样,以脑卒中为主,致残率及致死率高,MRI对早期诊断及早期治疗有重要意义。

Objective To investigate the clinical manifestations and magnetic resonance angiography（MRA） features of vertebrobasilar dolichoectasia（VBD）,and to improve the understanding of VBD.Methods Clinical data of 128 patients with VBD were retrospectively analyzed and clinical manifestations and MRA features of VBD were summarized.Results The clinical manifestations of VBD were diverse and the main symptoms included ischemic cerebrovascular disease（85 cases）,brain stem nerve compression damage（26 cases）,hemorrhagic cerebrovascular disease（11 cases） and hydrocephalus（6 cases）.The mean diameter and length of the basilar artery were 4.9（4.5-5.4） mm and 34.5（30-39） mm,respectively.The mean diameter length of lateral deviation perpendicular to a straight line joining the basilar artery origin to its bifurcation was 11.2（10.5-15.1） mm.Conclusion The stroke is the initial manifestation of VBD,which is a major cause of death and disability.MRI is very important for the early diagnosis and treatment of VBD.