椎动脉颅外段狭窄的螺旋CT血管成像分析  

Analysis of spiral CT angiography in extracranial vertebral artery stenosis spiral

作　　者：关德增 昌杰 关浩增 刘波 

机构地区：[1]广西江滨医院放射科,530021 [2]广西江滨医院心内科,530021

出　　处：《医学影像学杂志》2011年第2期190-193,共4页Journal of Medical Imaging

基　　金：广西壮族自治区卫生厅科研课题(编号:Z2009411)

摘　　要：目的：探讨椎动脉颅外段狭窄的特点及相关因素。方法：128例患者均行螺旋CT椎动脉造影,原始数据经CT工作站后处理,应用横断面、多平面及曲面重建方式观察图像,分析椎动脉狭窄的病因类型、节段分布、狭窄率及相关因素。结果：128例中,动脉硬化性狭窄23例,占18.0%,共有32处狭窄,V1段24处,其中18处位于椎动脉起始部;骨质增生性狭窄55例,占43.0%,共有狭窄95处,86.3%分布于C4-C6水平。中度以上狭窄,动脉硬化性占53.1%,骨质增生性占30.5%,动脉硬化性狭窄的中度以上狭窄率较高（P〈0.05）。结论：动脉硬化和骨质增生是老年人椎动脉颅外段狭窄的主要病因,椎动脉起始部和C4-C6水平是狭窄的好发部位,狭窄程度与狭窄部位、病因类型及骨质增生类型相关。Objective：To explore the characteristics and factors of extracranial vertebral artery stenosis.Methods：128 patients underwent spiral CT angiography of vertebral artery.Raw data were procesed by the CT workstation and reconstructed with the mode of cross-sectional,multiplanar and curveplane,Cause of the stenosis,distribution,narrowly rate and relevant factors were analyzed.Results：Among all of 128 cases,23 cases were atherosclerotic stenosis,represented 18.0%.There were 32 narrow in which 24 were in V1 segment and 18 in the start of vertebral artery;55 cases bone hyperplasia stenosis,representing 43.0%,95 narrow,86.3% of the narrows were distributed in the C4-C6 segment.As for moderate and severe stenosis rate,atherosclerosis accountsed for 53.1%,bone hyperplasia for 30.5%,atherosclerosis was higher than bone hyperplasia（P〈0.05）.Conclusion： Arteriosclerosis and bone hyperplasia are the major cause of extracranial vertebral artery stenosis in the elderly.The beginning and the segment of C4-C6 are the narrow predilection sites,and the degree of stenosis is related to stenosis location,cause and hyperostosis type.

关 键 词：椎动脉狭窄 血管成像 体层摄影术 X线计算机 

分 类 号：R543.4[医药卫生—心血管疾病] R814.42[医药卫生—内科学]