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Duplex sonography in detection of renal artery stenosis: a simplified approach using new parameters
G Ioannou1, R J Thorpe, S G MacKechnie
1Radiology Department, Greenslopes Repatriation Hospital, Qld, Australia.
Australasian Radiology
|November 1, 1993
Abstract:
A case report illustrating a new investigation for detecting renal artery stenosis (RAS) is reported. Colour Doppler ultrasound evaluation of the readily accessible intrarenal arteries is a fast and accurate technique. Acceleration time and acceleration are the Doppler parameters used for measuring systolic upstroke on the waveforms obtained. Prolonged acceleration time (> or = 0.07s) and diminished acceleration (< or = 3 m/s2) indicate haemodynamically significant stenosis. Intrarenal Doppler ultrasound should provide a safe noninvasive screening examination for the detection of RAS.