Fast Local Phase Velocity-Based Imaging: Shear Wave Particle Velocity and Displacement Motion Study.

ABSTRACT: Fast and precise noninvasive evaluation of tissue mechanical properties is of high importance in ultrasound shear wave elastography. In this study, we present an updated, faster version of the local phase velocity-based imaging (LPVI) method used to create images of local phase velocity in soft tissues. The updated LPVI implementation uses 1-D Fourier transforms in spatial dimensions separately in comparison to its original implementation. A directional filter is applied upon the shear wave field to extract the left-to-right (LR) and right-to-left (RL) propagating shear waves. A local shear wave phase velocity map is recovered based on both LR and RL waves. Finally, a 2-D shear wave velocity map is reconstructed by combining the LR and RL phase velocity maps. LPVI performance for shear wav

SUBMITTER: Kijanka P 

PROVIDER: S-EPMC7123440 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature