彩色多普勒超声对颈动脉狭窄的诊断价值

Diagnostic value of color doppler echocardiography in detecting carotid artery stenosls

目的探讨彩色多普勒超声对颈动脉狭窄的诊断价值。方法对21例有症状性缺血性脑血管疾病患者行颈总动脉和颈内动脉颅外段超声检查，测量其血流动力学参数，计算狭窄率。结果以64层螺旋CT血管造影（CTA）作为标准对照，彩色多普勒超声对颈动脉狭窄的敏感度为95．8％，特异度为83．3％。对轻．中度狭窄的敏感度为90．4％，特异度为93．6％，对重度狭窄的敏感度为94．6％，特异度为93．6％。与CTA结果比较，对颈动脉狭窄的诊断无显著性差异（P〉0．05）。结论彩色多普勒超声可作为诊断颈动脉狭窄的首选方法，为早期预防和治疗提供依据，具有重要的临床价值。

Objective To evaluate the diagnostic value of color Doppler echocardiography in detecting carotid artery stenosis. Methods Blood flow dynamic parameters of CCA and ICA of 21 patients with symptomatic and ischemia of cerebrovascular disease were obtained by ultrasound. The ratio of stenosis was calculated. Results The results of CTA was regarded as gold standard in this study. Comparing with CTA,the general sensitivity and specificity of color Doppler ecbocardiograpby in detecting carotid artery stenosis was 95.8% and 83.3% ,respectively. For mild to moderate stenosis, the sensitivity and specificity of color Doppler echocardiograpby was 90. 8% and 85% , respectively. For serious stenosis, the sensitivity and specificity of color Doppler echocardiography was 94.6% and 93.6% , respectively. No significant difference was found between the diagnostic value of CTA and color Doppler echocardiography in detecting carotid artery stenosis（ P 〉 0. 05）. Conclusion Color Doppler echocardiography can be used as a first-choice method in the diagnosis of carotid artery stenosis, and can provide evidence for early diagnosis ,early treatment and early decision of prevention design.