摘要
目的探讨彩色多普勒二维灰阶血流成像技术(B-flow)对椎动脉型颈椎病的诊断价值。方法对97例颈椎病患者应用彩色多普勒二维灰阶血流成像技术对椎动脉从形态、结构、血流显像及动力学方面观测分析,确诊53例椎动脉型颈椎病患者,对单侧椎动脉内径<2.7mm的患者(28例),测定其椎动脉血流动力学参数、收缩期最高流速(PSV)、舒张末期流速(EDV)、平均流速(Vm)、阻力指数(RI)、搏动指数(PI),并与健侧对比分析。结果 B-flow能同时清晰显示血流、血管壁结构及周围软组织等。椎动脉型颈椎病超声表现为椎动脉普遍狭窄,内径<3mm,椎动脉中段走行弯曲,血流束在管腔狭窄处变细,RI、PI增高,颈段PI>1.48、RI>0.75,椎骨段RI>0.71、PI>1.23,椎动脉供血不足时,在狭窄的基础上,流速降低,中段PSV<35cm/s、Vm<20cm/s、EDV<10cm/s,椎动脉频谱形态异常。结论 B-flow以其高频和高分辨率,能直接显示血流动力学变化、血管壁及其周围组织的解剖结构,无血流外溢,不依赖扫描角度、没有彩色取样框,全屏显示血管的分布和血流状态,因而对诊断椎动脉型颈椎病有很大的优越性。
Objective To investigate the diagnostic value of color Doppler and imaging technology of B-flow in vertebral artery type of cervical spondylopathy.Methods The vertebral artery of 93 cases with cervical spondylopathy was observed and analyzed by color Doppler and imaging technology of B-flow from the aspects of shape,structure,flow imaging and dynamics.53 cases were diagnosed as vertebral artery type of cervical spondylopathy,and the patients （28 cases） whose diameter of unilateral vertebral artery 2.7 mm were taken the determination of hemodynamic index of vertebral artery,peak of shrinkage velocity （PSV）,end diastolic velocity （EDV）,mean velocity （Vm）,resistance index （RI）,pulsatility index （PI）,and analyzed and compared with the contralateral vertebral artery.Results B-flow could reveal the blood flow,vascular wall structure,surrounding soft organization,and others clearly at the same time.The ultrasound of vertebral artery type of cervical spondylopathy showed that the general vertebral artery was of stenosis,inner diameter 3 mm,the ways of middle piece of vertebra artery were bent,blood flow existed got slender at stenosis of lumen,RI and PI were increased,PI of cervical segment 1.48,RI of cervical segment0.75,RI of vertebral section0.71,PI of vertebral section1.23.When vertebral artery was of insufficiency and on the basis of stenosis,the velocity got low,the middle piece of PSV35 cm/s,Vm20 cm/s,EDV10 cm/s,and vertebra artery spectrum morphology was abnormal.Conclusion Because B-flow has high frequency and resolution,can directly reveal the hemodynamic changes,the anatomical structure of vascular wall and the surrounding organization,has no flow spillover,does not depend on scan angle,has no color sampling frame,reveal the vascular distribution and flow state in full screen,so it has great advantages in diagnosis of vertebral artery type of cervical spondylopathy.
出处
《中国当代医药》
2012年第30期105-107,共3页
China Modern Medicine
关键词
椎动脉型颈椎病
二维灰阶血流成像技术
血流动力学
诊断
Vertebral artery type of cervical spondylopathy
Imaging technology of B-flow
Hemodynamics
Diagnosis
