椎基底动脉扩张延长症的MR表现及诊断价值  

MR findings and diagnostic value of vertebrobasilar dolichoectasia

作　　者：姜雪琴 顾伟 徐朱烽 JIANG Xueqin;GU Wei;XU Zhufeng(Department of Medical Imaging,Nanjing Lishui District People's Hospital,Nanjing,Jiangsu 211299,China)

机构地区：[1]南京市溧水区人民医院影像科,江苏南京211299

出　　处：《影像研究与医学应用》2024年第2期21-23,27,共4页Journal of Imaging Research and Medical Applications

摘　　要：目的:探讨椎基底动脉延长扩张症患者临床表现,分析磁共振成像(MRI)及磁共振血管成像(MRA)在椎基底动脉延长扩张症(VBD)中的诊断价值。方法:回顾性分析2018年1月—2022年4月于南京市溧水区人民医院确诊为VBD的36例患者资料,所有患者均行头颅MRI平扫及MRA检查,根据有无血管性临床表现分为有症状组和无症状组,对两组病例基本资料及MRI、MRA影像特点进行比较分析。结果:MRI序列清晰显示椎基底动脉不同程度的迂曲、扩张、延长,图像上呈流空低信号,部分显示高信号。三维时间飞跃法MRA(3D-TOF-MRA)图能够完整显示迂曲扩张,原始图像结合最大信号强度投影图像可清晰显示迂曲血管与周围组织关系;两组患者基底动脉(BA)直径、长度、高度、位置评分以及椎动脉(VA)直径差异均具有统计学意义(P<0.05);两组患者的VA长度差异无统计学意义(P>0.05)。结论:MRI及MRA可清晰显示椎基底动脉扩张形态及与周围组织关系,为VBD诊断提供可靠影像依据。Objective To explore the clinical manifestations of patients with vertebrobasilar dolichoectasia(VBD),and to analyze the diagnostic value of magnetic resonance imaging(MRI)and magnetic resonance angiography(MRA)in VBD.Methods 36 patients data with VBD diagnosed in Nanjing Lishui District People's Hospital from January 2018 to April 2022 were analyzed retrospectively.all patients underwent plain MRI scan and MRA examination.They were divided into symptomatic group and asymptomatic group according to their vascular clinical manifestations.The basic data and the characteristics of MRI and MRA images of the two groups were compared and analyzed.Results MRI sequence clearly showed different degrees of tortuosity,dilatation and prolongation of vertebrobasilar artery,with flow void low signal and partial high signal on the image.three-dimensional time-of-flight MRA(3D-TOF-MRA)map could show tortuous dilatation completely,and the original image combined with maximum signal intensity projection image could clearly show the relationship between tortuous vessels and surrounding tissues,and there were significant differences in basilar artery(BA)diameter,length,height,position score and vertebral artery(VA)diameter between the two groups(P<0.05);There was no significant difference in VA length between the two groups(P>0.05).Conclusion MRI and MRA can clearly show the shape of vertebrobasilar artery dilatation and its relationship with surrounding tissues,and provide reliable imaging basis for the diagnosis of VBD.

关 键 词：椎动脉 基底动脉 磁共振成像 椎基底动脉延长扩张症 

分 类 号：R445.2[医药卫生—影像医学与核医学]