Feasibility Study of Combining Wall Shear Stress and Elastography to Assess the Vascular Status of Carotid Artery

Author:

Xu Jinfeng1,Gao Wenjing1ORCID,Dong Yinghui1ORCID,Hong Shaofu1,Song Di1,Liu Mengmeng1,Wei Zhanghong1,Du Yigang2,Li Shuangshuang2,Dong Fajin1

Affiliation:

1. Department of Ultrasound, Shenzhen People’s Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, Guangdong, China

2. Shenzhen Mindray Bio-Medical Electronics Co., Ltd., Shenzhen 518057, Guangdong, China

Abstract

Introduction: At present, early detection of the potential risk of atherosclerosis and prevention is of great significance to reduce the occurrence of stroke. Aim: This study aims to explore the value of combining the wall shear stress measured by ultrasound vector flow imaging technique and sound touch elastography of common carotid artery in normal adults using the Mindray Resona 7 ultrasound system. Methods: Forty volunteers (mean age 39.5 y, 23 females, 17 males) were divided into four groups according to their age. All volunteers underwent ultrasound carotid artery examination, and the values of wall shear stress and elasticity on the posterior wall of the common carotid artery were measured using advanced imaging functions, vector flow imaging technique, and sound touch elastography. Results: Different cut-off values of wall shear stress were used to investigate the significance between two groups with corresponding sound touch elastography values. It can be seen that the statistical difference could be found when the mean wall shear stress was larger than 1.5 Pa approximately (statistical significance was defined when P < 0.05), and the sound touch elastography value was positively correlated with the wall shear stress value. Conclusion: This study reveals that the combination of wall shear stress and sound touch elastography is an effective and feasible method for assessing carotid artery health. When the mean wall shear stress value is over 1.5 Pa, the corresponding sound touch elastography value increases significantly. The risk of atherosclerosis increases with the stiffness of blood vessel walls.

Funder

Commission of Science and Technology of Shenzhen

Publisher

Bentham Science Publishers Ltd.

Subject

Radiology, Nuclear Medicine and imaging

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