Quantification of shear modulus in in vitro porcine myocardium using real-time shear wave elastography
10.3760/cma.j.issn.1004-4477.2012.08.023
- VernacularTitle:实时剪切波弹性成像测量猪离体心脏心肌剪切模量
- Author:
Qiaoying TANG
;
Youbin DENG
;
Kun LIU
;
Jun ZHANG
;
Yuan HUANG
;
Jie SUN
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Myocardium;
Shear modulus;
Shear wave elastography
- From:
Chinese Journal of Ultrasonography
2012;21(8):708-710
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate in vitro porcine myocardial shear modulus using real-time shear wave elastography.Methods Shear wave elastography was used on four in vitro porcine hearts.The probe was placed parallel to the long or short-axis of the heart on the anterior wall of the left ventricle,and myocardial shear modulus were measured in subepicardial,middle,subendocardial layers,respectively.Results Shear modulus of subepicardial,middle,subendocardial myocardium were (46.04 ± 17.07)kPa,(87.70 ± 29.67) kPa,( 115.73 ± 30.04) kPa,respectively,when the probe was placed parallel to the long-axis of the heart; whereas those were (78.71 ± 26.48) kPa,(77.08 ± 34.00)kPa,(70.69 ± 41.38) kPa,respectively,when the probe was placed parallel to the short-axis of the heart.Conclusions By using realtime shear wave elastography,the shear modulus values measured in subepicardial,middle,subendocardial myocardium of the left ventricle are different,even myocardium in the same location appears different shear modulus values when the probe orientation are different.
