摘要
目的评价彩色多普勒超声对动脉粥样硬化性肾动脉狭窄(ARAS)的诊断准确性。方法对123例患有动脉粥样硬化性疾病的患者共246条肾动脉进行彩色多普勒超声检查。每例患者均测量肾动脉峰值流速(PSV)与腹主动脉峰值流速比值(RAR),叶间动脉加速时间(AT)。在双盲条件下,以肾动脉造影为标准,评价彩色多普勒超声诊断ARAS的准确性。结果对肾动脉狭窄度≥50%的病变,PSV≥150cm/s的敏感性和特异性分别为80.3%和98.2%。RAR>2.2的敏感性和特异性为81.8%和96.5%。两者结合,诊断的敏感性和特异性可达96.4%和94.3%。对≥75%的狭窄,采用叶间动脉AT>0.07s,诊断的敏感性和特异性为90.1%及91.4%。结论彩色多普勒超声是诊断动脉粥样硬化性肾动脉狭窄的一种简便可靠的无创检查手段。
Objective To evaluate the accuracy of color Doppler ultrasonograpy for diagnosing atherosclerotic renal artery stenosis(ARAS).Methods One hundred and twenty-three patients with atherosclerotic diseases totalling 246 renal arteries were examined by color Doppler ultrasonograpy and renal artery angiography.Both examination were double blind.The ratio of peak systolic velocity (PSV) of the renal artery and abdominal aorta(RAR),intrarenal acceleration time (AT) were obtained.Results For patients with renal artery stenosis ≥50%,the sensitivity and specificity of PSV≥150 cm/s were 80.3% and 98.2%.The sensitivity and specificity of RAR> 2.2 were 81.8% and 96.5%.Combined these two criteria,the sensitivity and specificity were up to 96.4% and 94.3%.Intrarenal AT> 0.07 s showed the sensitivity and specificity of 90.1% and 91.4% for those with stenosis ≥75%.Conclusions Color Doppler ultrasonography is a reliable and convenient examination for diagnosing ARAS.
出处
《中华超声影像学杂志》
CSCD
2005年第7期508-511,共4页
Chinese Journal of Ultrasonography
基金
卫生部临床学科重点项目(20010913)
