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Fast acquisition sequences enable >200Hz 2D cardiac B-mode imaging with little compromise in image quality. Fast imaging minimizes frame to frame decorrelation, enabling RF-based tracking for enhanced signal-to-noise ratio (SNR) in motion and deformation imaging. Our objective was to evaluate the performance and hypothesize on the clinical usefulness of Fast RF-based Tracking (FRFT) in comparison...
Fast acquisition sequences enable >200Hz 2D cardiac B-mode imaging with little compromise in image quality. Fast imaging minimizes frame to frame decorrelation, enabling radiofrequency (RF)-based tracking for enhanced signal-to-noise ratio (SNR) in motion and deformation imaging. Our objective was to compare the performance and clinical usefulness of Fast RF-based Tracking (FRFT) to the established...
Left intraventricular blood vortices could provide important information on cardiovascular health. However they are not explicitly measured in current-day commercial systems. Additionally, the slow frame rates (typically <30Hz) of 2D cardiac Doppler imaging do not enable adequate sampling of the intraventricular blood dynamics. Finally, current imaging modes do not allow simultaneous estimation...
We propose a new algorithm for two-phase, piecewise-smooth segmentation with shape prior. The image is segmented by a binary template that is deformed by a regular geometric transformation. The choice of the template together with the constraint on the transformation introduce the shape prior. The deformation is guided by the maximization of the likelihood of foreground and background intensity models,...
A plethora of techniques for cardiac deformation imaging with 3D ultrasound, typically referred to as 3D speckle tracking techniques, are available from academia and industry. Although the benefits of single methods over alternative ones have been reported in separate publications, the intrinsic differences in the data and definitions used makes it hard to compare the relative performance of different...
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