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目的评价彩色多普勒超声诊断肾动脉狭窄的准确性。方法采用彩色多普勒超声对31例可疑肾动脉狭窄的高血压患者的62条肾动脉进行测量,并与肾动脉造影结果相比较。分别计算肾动脉狭窄≥50%和≥60%的准确度、敏感度和特异度。结果超声诊断肾动脉狭窄≥50%的准确度为74.2%、敏感度为84.8%、特异度为62.1%。诊断肾动脉狭窄≥60%的准确度为91.9%、敏感度为85.7%、特异度为93.8%。结论彩色多普勒超声诊断肾动脉狭窄≥60%的准确度高于诊断肾动脉狭窄≥50%的准确度。
Objective To evaluate the accuracy of color Doppler ultrasound in the diagnosis of renal artery stenosis. Methods Twenty-two renal arteries of 31 hypertensive patients with suspected renal artery stenosis were measured by color Doppler sonography and compared with those of renal artery angiography. The accuracy, sensitivity and specificity of renal artery stenosis ≥50% and ≥60% were calculated respectively. Results The accuracy of ultrasonography in diagnosing renal artery stenosis≥50% was 74.2%, the sensitivity was 84.8% and the specificity was 62.1%. The accuracy of diagnosing renal artery stenosis≥60% was 91.9%, the sensitivity was 85.7% and the specificity was 93.8%. Conclusion The accuracy of color Doppler ultrasound in diagnosing renal artery stenosis≥60% is higher than that of diagnosing renal artery stenosis≥50%.