Research on Comparison of Imaging Parameters in Intravascular Ultrasound Elastography
- VernacularTitle:血管内超声弹性成像中成像参数的比较研究
- Author:
Ke LIU
;
Xinjian ZHU
;
Jinhua SHAO
;
Jing BAI
;
Pengfei ZHANG
;
Yun ZHANG
- Publication Type:Journal Article
- Keywords:
intravascular ultrasound;
elastography;
displacement;
strain;
elastic modulus
- From:Space Medicine & Medical Engineering
2006;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To make the validation of intravascular ultrasound elastography (IVUSE) for detecting the plaque.Methods A plain strain model of vascular plaque was established and then the RF signals of IVUS were produced.The radial displacement distribution and strain distribution were calculated through 1D numerical optimization based on the RF signals.Then the elastic moduli distribution was reconstructed by finite element method (FEM) and iteration method.Results The three elastic parameters,displacement/strain/moduli,all could detect the plaque.Elastic moduli presented the information of the shape and size of the plaque,meanwhile,the displacement and strain distributions could not give the information clearly.Conclusion Elastic modulus is proved to be superior to the other two parameters in detecting the plaque,whereas it is subject to the accuracy of the strain's estimation.
