文献类型：期刊文献

英文题名：INVESTIGATION OF ULTRASOUND-MEASURED FLOW RATE AND WALL SHEAR RATE IN WRIST ARTERIES USING FLOW PHANTOMS

作者：Zhou, Xiaowei[1];Xia, Chunming[2];Khan, Faisel[3];Corner, George A.[1];Huang, Zhihong[1];Hoskins, Peter R.[4]

机构：[1]Univ Dundee, Sch Engn Phys & Math, Dundee DD1 4HN, Scotland;[2]E China Univ Sci & Technol, Sch Mech & Power Engn, Room 435,Bldg 17, Shanghai 2000237, Peoples R China;[3]Univ Dundee, Ninewells Hosp & Med Sch, Cardiovasc & Diabet Med, Dundee DD1 4HN, Scotland;[4]Univ Edinburgh, Ctr Cardiovasc Sci, Edinburgh, Midlothian, Scotland

年份：2016

卷号：42

期号：3

起止页码：815

外文期刊名：ULTRASOUND IN MEDICINE AND BIOLOGY

收录：;EI(收录号：20160101744282);WOS:【SCI-EXPANDED(收录号:WOS:000373383400018)】；

基金：This work is supported by the China Scholarship Council (CSC) and University of Dundee. The authors gratefully acknowledge Dr. David Kenwright and Dr. Efstratios Kokkalis for their great assistance in constructing the flow phantom.

语种：英文

外文关键词：Radial artery; Ulnar artery; Flow rate; Wall shear rate; Womersley; Doppler ultrasound; Flow phantoms

摘要：The aim of this study was to evaluate the errors in measurement of volumetric flow rate and wall shear rate measured in radial and ulnar arteries using a commercial ultrasound scanning system. The Womersley equations were used to estimate the flow rate and wall shear rate waveforms, based on the measured vessel diameter and centerline velocity waveform. In the experiments, each variable (vessel depth, diameter, flow rate, beam-vessel angle and different waveform) in the phantom was investigated in turn, and its value was varied within a normal range while others were fixed at their typical values. The outcomes revealed that flow rate and wall shear rate were overestimated in all cases, from around 13% to nearly 50%. It is concluded that measurements of flow rate and wall shear rate in radial and ulnar arteries with a clinical ultrasound scanner are vulnerable to overestimation. (E-mail: z.y.huang@dundee.ac.uk and cmxia@ecust.edu.cn) (C) 2016 World Federation for Ultrasound in Medicine & Biology.