3D Intraventricular Flow Mapping from Colour Doppler Images and Wall Motion

Alberto Gómez¹, Adelaide de Vecchi¹, Kuberan Pushparajah^{1, 2}, John Simpson^{1, 2}, Daniel Giese¹, Tobias Schaeffter¹, and Graeme Penney¹

¹King’s College London, Division of Imaging Sciences, London, UK

²NHS Trust, Guy and St Thomas’ Hospital, London, UK

Abstract. We propose a new method to recover 3D time-resolved velocity vectors within the left ventricle (LV) using a combination of multiple registered 3D colour Doppler images and LV wall motion. Incorporation of wall motion, calculated from 3D B-Mode images, and the use of a multi-scale reconstruction framework allow recovery of 3D velocity over the entire ventricle, even in regions where there is little or no Doppler data.

Our method is tested on the LV of a paediatric patient and is compared to 2D and 3D flow Magnetic Resonance Imaging (MRI). Use of wall motion information increased stroke volume accuracy by 14%, and enabled full 3D velocity mapping within the ventricle. Velocity distribution showed good agreement with respect to MRI, and vortex formation during diastole was successfully reconstructed.

Keywords: Colour Doppler Echocardiography, 3D Velocity Reconstruction, Flow Patterns, Cardiac Motion, Multiple Views, Registration

LNCS 8150, p. 476 ff.

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