title: Duplex sonography in detection of renal artery stenosis: a simplified approach using new parameters.
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.
authors.affiliation: Radiology Department, Greenslopes Repatriation Hospital, Qld, Australia.
authors.forename: G
authors.initials: G
authors.lastname: Ioannou
authors.forename: R J
authors.initials: RJ
authors.lastname: Thorpe
authors.forename: S G
authors.initials: SG
authors.lastname: MacKechnie
authors.forename: J M
authors.initials: JM
authors.lastname: Hobbs
authors.forename: K M
authors.initials: KM
authors.lastname: Williams
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008722:Methods; D012078:Renal Artery Obstruction / Q000000981:diagnostic imaging*; D014463:Ultrasonography