@inproceedings{447f606fb9f645b1aa11918730ae7d04,
title = "Nonlinear Least-Squares Estimation of Shear Wave Speeds in Viscoelastic Media",
abstract = "Rapid simulations of three-dimensional (3D) shear wave propagation in viscoelastic media with a Kelvin-Voigt model are enabled by Green's functions accelerated with graphics processing unit (GPU) parallelization using high performance computing (HPC) resources. From \mathbf{3D} waveforms, shear wave speed estimates are obtained through cross-correlations, where previous efforts have demonstrated that errors in the estimated shear wave speed increase with rising viscosity. To reduce the error in the shear wave speed estimate, a nonlinear least-squares approach accounting for propagation, attenuation, and waveform spreading is proposed for viscoelastic materials. The nonlinear least-squares approach yields an estimate of shear elasticity and shear viscosity.",
keywords = "Nonlinear least-squares, shear elasticity, shear viscosity, viscoelasticity",
author = "Bannon, {Nicholas A.} and Urban, {Matthew W.} and McGough, {Robert J.}",
note = "Funding Information: ACKNOWLEGMENTS Support from NIH grant R01 EB012079 is gratefully acknowledged. Publisher Copyright: {\textcopyright} 2022 IEEE.; 2022 IEEE International Ultrasonics Symposium, IUS 2022 ; Conference date: 10-10-2022 Through 13-10-2022",
year = "2022",
doi = "10.1109/IUS54386.2022.9957963",
language = "English (US)",
series = "IEEE International Ultrasonics Symposium, IUS",
publisher = "IEEE Computer Society",
booktitle = "IUS 2022 - IEEE International Ultrasonics Symposium",
}