Two-Dimensional Intraventricular Flow Mapping by Digital Processing Conventional Color-Doppler Echocardiography Images

Abstract--Doppler echocardiography remains the most extended clinical modality for the evaluation of left ventricular (LV) function. Current Doppler ultrasound methods, however, are limited to the representation of a single flow velocity component. We thus developed a novel technique to construct 2D time-resolved (2D+t) LV velocity fields from conventional transthoracic clinical acquisitions. Combining color-Doppler velocities with LV wall positions, the cross-beam blood velocities were calculated using the continuity equation under a planar flow assumption. To validate the algorithm, 2D Doppler flow mapping and laser particle image velocimetry (PIV) measurements were carried out in an atrio-ventricular duplicator. Phase-contrast magnetic resonance (MR) acquisitions were used to measure in vivo the error due to the 2D flow assumption and to potential scan-plane misalignment. Finally, the applicability of the Doppler technique was tested in the clinical setting. In vitro experiments dem...

• Type: Journal
• Year: 2010
• Where: TMI
• Authors: Damien Garcia, Juan C. del Álamo, David Tanné, Raquel Yotti, Cristina Cortina, Eric Bertrand, José Carlos Antoranz, Esther Pérez-David, Régis Rieu, Francisco Fernandez-Aviles, Javier Bermejo
• Keywords: Flow Assumption, Management, Planar Flow Assumption, TMI 2010, Vortex