Wall Shear Stress Measurements Based on Ultrasound Vector Flow Imaging: Theoretical Studies and Clinical Examples. (3rd March 2020)

• Record Type: Journal Article
• Authors: Du, Yigang; Goddi, Alfredo; Bortolotto, Chandra; Shen, Yingying; Dell'Era, Alex; Calliada, Fabrizio; Zhu, Lei
• Is Part Of: Journal of ultrasound in medicine. Volume 39:Number 8(2020)
• Page Start: 1649
• Page End: 1664
• Publication Date: 2020-03-03
• Subjects: Doppler ultrasound -- nonlaminar flow -- turbulence -- vector flow imaging -- wall shear stress; Ultrasonics in medicine -- Periodicals; Ultrasonics; Ultrasonography; Ultrasonics in medicine; Electronic journals; Periodicals; Periodicals; 616.07543
• DOI: 10.1002/jum.15253
• Languages: English
• ISSNs: 0278-4297

Abstract

Abstract : 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.