Efficient Two-Pass 3-D Speckle Tracking for Ultrasound Imaging.

ABSTRACT: Speckle tracking based on block matching is the most common method for multi-dimensional motion estimation in ultrasound elasticity imaging. Extension of two-dimensional (2-D) methods to three dimensions (3-D) has been problematic because of the large computational load of 3-D tracking, as well as performance issues related to the low frame (volume) rates of 3-D images. To address both of these problems, we have developed an efficient two-pass tracking method suited to cardiac elasticity imaging. PatchMatch, originally developed for image editing, has been adapted for ultrasound to provide first-pass displacement estimates. Second-pass estimation uses conventional block matching within a much smaller search region. 3-D displacements are then obtained using correlation filtering previously

SUBMITTER: Jeng GS 

PROVIDER: S-EPMC6365000 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature