[The diagnosis of renal artery stenosis by the data from ultrasonic study methods].

The purpose of the present investigation was to elaborate diagnostic criteria for stenosing of renal arteries according to ultrasonic dopplerography. The investigation included 35 patients suffering from vasorenal hypertension with stenoses of the renal arteries documented by angiography and 63 patients with stage II essential hypertension, who made up the control group. Ultrasonic scanning of the kidneys and dopplerography of the renal arteries were performed with the use of the Acuson-128 ultrasonic system fitted out with a sector transducer operating at a frequency of 3.

[The use of ultrasonic methods for assessing renal blood flow].

A study of possibilities of different ultrasound (US) methods in the estimation of renal blood flow was made in 35 patients with angiographically documented renal artery stenosis. The validity of data obtained with US B-scanning and Doppler technique was estimated by comparison with direct artery diameter and US blood flow measurements made intraoperatively during reconstructive renal artery surgery in 25 patients. It was shown that US Doppler spectral characteristics obtained noninvasively before surgery and intraoperatively were identical.