3D Ultrasound Shear Wave Imaging Simulation of Heterogeneous Tissue

被引：1
|
作者：
Park, Dae Woo [1 ]
机构：
[1] Univ Michigan, Dept Mech Engn, Ann Arbor, MI 48109 USA
来源：
JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY | 2016年 / 11卷 / 05期
关键词：
Ultrasound shear wave imaging; Algebraic Helmholtz inversion equation; Heterogeneous tissue; ACOUSTIC RADIATION FORCE; MAGNETIC-RESONANCE ELASTOGRAPHY; IN-VIVO; HELMHOLTZ INVERSION; VISCOELASTICITY; ELASTICITY; FIBROSIS;
D O I：
10.5370/JEET.2016.11.5.1486
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Shear wave imaging can quantitatively measure tissue elasticity in vivo using a 2D algebraic Helmholtz inversion (AHI) equation. The 2D AHI equation reconstructs tissue elasticity by assuming that the shear wave diffraction in the elevational direction (out-of-plane direction) is not substantial. However, the application of 2D AHI equation is limited in assessing heterogeneous tissues, as the shear wave diffraction in the elevational direction critically affects the shear modulus reconstruction. A 3D AHI equation can improve the accuracy of shear modulus reconstruction for heterogeneous tissues. In this study, a finite element (FE) based shear wave simulation was performed on an early stage of cancer and an advanced cancer tissue model. The shear modulus of FE model computed by the proposed 3D AHI equation was compared to the 2D AHI equation. The 3D AM equation substantially improved accuracy of shear modulus computation especially for the early stage of cancer model. The results from the shear modulus of inclusion by the 3D AHI equation produced the same as the input value of 150 kPa and two times lower variation than the shear modulus obtained by the 2D AHI equation.
引用
收藏
页码：1486 / 1491
页数：6
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