Popis: |
Coherence-based methods have been shown to improve image quality by suppressing spurious lobes. However, when imaging a diffuse medium, such methods lead to a high variance of speckle amplitudes (i.e. granular appearance) which could limit their applicability for direct clinical imaging. The granular pattern may however be beneficial for speckle tracking echocardiography (STE), given the higher contrast inside the matching kernel. Accordingly, this study investigated the use of phase coherence methods as a pre-processing stage for STE, aiming at improving tracking performance and thereby, accuracy of myocardial function quantification. |