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Wall Shear Stress Measurements Based on Ultrasound Vector Flow Imaging
Author(s) -
Du Yigang,
Goddi Alfredo,
Bortolotto Chandra,
Shen Yingying,
Dell'Era Alex,
Calliada Fabrizio,
Zhu Lei
Publication year - 2020
Publication title -
journal of ultrasound in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 91
eISSN - 1550-9613
pISSN - 0278-4297
DOI - 10.1002/jum.15253
Subject(s) - laminar flow , shear stress , turbulence , medicine , ultrasound , flow (mathematics) , mechanics , shear (geology) , biomedical engineering , acoustics , radiology , physics , composite material , materials science
Wall shear stress (WSS) is considered as a key factor for atherosclerosis development. Previous WSS research based on pulsed wave Doppler (PWD) showed limitations in complex flows. To improve accuracy for nonlaminar flow, a commercial ultrasound vector flow imaging (UVFI)‐based WSS calculation is proposed. Errors for PWD are presented theoretically when flow is not laminar. Based on this, simulations of WSS calculations between PWD and UVFI were set up for different turbulent flows. Our simulations show that UVFI has obviously better performance than PWD in WSS calculations. Wall shear stress results in different flow conditions at carotid bifurcations are described.