【摘要】 应用双功能超声多普勒对35例患者70支肾动脉进行诊断性研究，所有患者都做过DSA。结果5支肾动脉二维未显示且没有取得血流信号。在检查成功的65支肾动脉中，23支DSA证实其管径狭窄超过50％，以肾动脉内径≤3．5mm或最大血流速度＞150cm／sec为诊断标准，超声检出其中21支，另有1支假阳性。诊断敏感性为91．3％，特异性97．6％，诊断总符合率95．4％。结果表明双功能超声多普勒为一种可靠的无创性诊断肾动脉狭窄方法。更多还原

【Abstract】 Thirty-five patients’ 70 renal arteries were investigated with both duplex scanning and DSA. The major criterion for diagnosing renal artery stenosis (diameter reduction>50% DSA) was either the renal artery diameter≤3. mmor a peak velocity greater than 150cm/sec. Five vessels were not visible and nor were Doppler signals recordable. Of the remaining 65 arteries, 23 stenosed. Twenty-one of the stenosed were detected by duplex scanning and one false positive diagnosis. The sensitivity of duplex scanning was 91. 3 %,the specificity was 97. 6% and the overall diagnostic accuracy rate was 95. 4%. The results show that duplex scanning is a reliable noninvasive examination method for renal artery stenosis.更多还原