Assessment of elasticity and viscosity in the human carotid artery using ultrasound shear wave dispersion imaging: a comparison study
10.3760/cma.j.issn.1004-4477.2019.09.004
- VernacularTitle: 超声剪切波频散成像评估颈动脉黏弹性的初步研究
- Author:
Xianghong LUO
1
;
Jianhui ZHANG
2
;
Sihui SHAO
2
;
Min YAN
3
;
Rong WU
2
;
Lianfang DU
2
;
Zhaojun LI
2
Author Information
1. Department of Echocardiography, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China
2. Department of Ultrasound, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China
3. Department of Ultrasound, Fuyang Cancer Hospital, Fuyang 236048, China
- Publication Type:Clinical Trail
- Keywords:
Shear wave dispersion;
Carotid artery;
Pulse wave velocity;
Viscoelasticity
- From:
Chinese Journal of Ultrasonography
2019;28(9):753-758
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To detect the viscoelasticity of carotid artery in healthy volunteers using ultrasonic shear wave dispersion (SWD) technique, and explore the feasibility and influencing factors for SWD parameters.
Methods:Forty-five healthy volunteers were recruited and divided into elder group (≥50 years old) and younger group (<50 years old) according to the age. The carotid arteries were examined by SWD at systole, axial elastic modulus (SWER) and viscous index (SWDR) were obtained. The pulse wave velocity (PWV), a carotid artery circumferential elastic parameter was obtained and considered as the reference indicator. The difference of SWER, SWDR and PWV were compared between two groups; and the correlation between them were analyzed by Pearson analysis, respectively.
Results:①Compared with the younger group, the carotid PWV increased, while SWER and SWDR decreased in the elder group(all P<0.05). ②In all subjects, SWER was negatively correlated with PWV (r=-0.256, P<0.05). In the elder group, SWER was negatively correlated with systolic blood pressure (r=-0.357, P<0.05), and SWDR was negatively correlated with PWV (r=-0.393, P<0.05). In the younger group, SWDR was positively correlated with systolic blood pressure (r=0.366, P<0.05).
Conclusions:Compared with the elder group, the carotid viscoelasticity was higher in young people, and it is correlated with PWV. SWD can evaluate carotid viscoelasticity, and contribute to better understanding of its tissue characteristics.
