Intraventricular Vector Flow Imaging

Echocardiographic imaging tools are developed to construct intracardiac velocity vector fields from conventional color Doppler. The original algorithm [IEEE TMI, 2010] has been implemented in Hitachi scanners. We recently introduced a new algorithm based on a robust regularization approach with automatic model selection [PMB, 2017].

intraventricular Vector Flow Mapping

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Ultrafast Echocardiography

We introduced duplex (B-mode + tissue Doppler) 90o-wide echocardiography at >400 frames/s using diverging beams. Motion compensation (MoCo) was integrated in the coherent compounding process to cope with phase delays due to myocardial motion [IEEE TMI, 2016].

ultrafast echocardiography with motion compensation

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Biomechanical modeling

Biomechanical models and/or in vitro experiments are designed in technical and/or clinical studies to develop and validate new imaging tools or diagnostic parameters.

Smoothed Particle Hydrodynamics in a carotid bifurcation

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Clinical studies

Based on hemodynamics principles or new imaging tools, new clinical parameters are proposed for better diagnosis in patients with heart disease (e.g. aortic stenosis, diastolic dysfunction, coronary stenosis).

Pressure loss in aortic stenosis

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