Vade A, Dudiak C, McCarthy P, Hatch D A, Subbaiah P
Department of Radiology, Loyola University Medical Center, Maywood, IL 60153, USA.
J Ultrasound Med. 1999 May;18(5):357-61. doi: 10.7863/jum.1999.18.5.357.
Diagnosing obstructive uropathy by renal resistive indices calculated from duplex Doppler sonographic waveforms has been supported as well as challenged in the radiology literature relating to adults. Despite reports of normally higher resistive indices in children as compared to adults, two studies have documented high sensitivity and specificity of renal Doppler sonography in the diagnosis of obstructive uropathy in children, using the same discriminatory criterion of a resistive index of 0.7 or greater as used in adults. We evaluated 43 infants with significant or bilateral pyelocaliectasis secondary to both obstructive and unobstructive uropathy and found no significant difference in the mean resistive indices or the mean difference in resistive indices of two kidneys in one patient. We conclude that Doppler sonography in infants has no value in differentiating obstructive from nonobstructive pyelocaliectasis.
通过双功多普勒超声波形计算肾阻力指数来诊断梗阻性尿路病，在有关成人的放射学文献中既有支持的观点，也有受到挑战的观点。尽管有报道称儿童的阻力指数通常比成人高，但有两项研究记录了肾多普勒超声在诊断儿童梗阻性尿路病方面具有较高的敏感性和特异性，采用的判别标准与成人相同，即阻力指数为0.7或更高。我们评估了43例因梗阻性和非梗阻性尿路病继发显著或双侧肾盂肾盏扩张的婴儿，发现一名患者的两个肾脏的平均阻力指数或阻力指数的平均差值没有显著差异。我们得出结论，婴儿的多普勒超声在区分梗阻性与非梗阻性肾盂肾盏扩张方面没有价值。
