A method to estimate wall shear rate with a clinical ultrasound scanner

James R Blake, Siobhan Meagher, Katharine H Fraser, William J Easson, Peter R Hoskins

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

A simple technique to estimate the wall shear rate in healthy arteries using a clinical ultrasound scanner has been developed. This method uses the theory of fully developed oscillatory flow together with a spectral Doppler trace and an estimate of mean arterial diameter. A method using color flow imaging was compared with the spectral Doppler method in vascular phantoms and found to have errors that were on average 35% greater. Differences from the theoretic value for the time averaged wall shear rate using the spectral Doppler method varied by artery: brachial −9 (1) %; carotid −7 (1) %; femoral −22 (4) %; and fetal aorta −17 (10) %. Test measurements obtained from one healthy volunteer demonstrated the feasibility of the technique in vivo
Original languageEnglish
Pages (from-to)760-774
Number of pages15
JournalUltrasound in Medicine & Biology
Volume34
Issue number5
DOIs
Publication statusPublished - May 2008

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