彩色多普勒超声检测椎动脉的临床意义

目的探讨彩色多普勒超声对检测椎动脉的临床应用价值。方法选择30例正常成人椎动脉二维及彩色多普勒超声血流动力学检查结果为正常对照组,回顾性总结分析323例经彩色多普勒超声检测诊断椎动脉异常二维声像表现及血流动力学改变,并分别与其MRI或DSA检查结果对照分析。结果323例异常椎动脉中,内径狭窄76例,闭塞伴斑块26例,走行明显扭曲43例,超声与MRI或DSA检查结果一致;彩色多普勒显示峰值流速明显减低216例,Vmax<25cm/s,椎动脉血流方向与颈动脉部分相反、流速曲线显示以收缩期部分反向血流9例,MRI或DSA检查未能做出诊断;彩色多普勒显示血流方向与颈动脉完全相反、流速曲线显示以收缩期完全反向血流11例(SSS),MRI未能做出诊断,DSA确诊11例。结论彩色多普勒超声常规检测椎动脉对临床脑血管疾病诊断有重要意义。

The clinical value of color Doppler flow imaging in the detection of vertebral artery

Objective To discuss the clinical value of color Doppler flow imaging(CDFI) in examining vertebral artery. Methods Totally, 323 abnormal vertebral arteries were analyzed retrospectively on the changes of morphology and hemodynamics on CDFI, and 30 normal vertebral arteries as a control group. Then the results of CDFI were compared with those of magnetic resonance imaging (MRI) and digital subtraction angiography (DSA). Results In the 323 cases, 76 were vertebral arteries stenosis, 26 were occlusion with plaques, and 43 were bended vertebral arteries. the measurements of CDFI were similar with those of MRI and DSA . The systolic peak flow velocity(PSV) of vertebral arteries were obviously reduced in 216 patients(PSV<25cm/s). There were 9 cases with vertebral arteries flow partly in opposite direction with that in carotid, while MRI and DSA were not able to find these problems. There were 11 cases with vertebral arterial flow completely in opposite direction with that in carotid. DSA made the same diagnosis with CDFI, however, MRI were not able to make the correct diagnosis. Conclusion Examination of vertebral arteries with CDFI routinely is important to the diagnosis of cerebrovascular diseases.