Spatio-temporal filtering of blood flow in 4D Phase-Contrast MRI

Sébastien Levilly (1, 2) , Jérôme Idier (1, 2) , David Le Touzé (3) , Perrine Paul-Gilloteaux (4) , Félicien Bonnefoy (3) , Saïd Moussaoui (1, 2) , Jean Michel Serfaty (5)

1 LS2N - Laboratoire des Sciences du Numérique de Nantes
2 LS2N - équipe SIMS - Signal, IMage et Son
3 LHEEA - Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique
4 SFR François Bonamy - Structure fédérative de recherche François Bonamy
5 UF Imagerie Cardiaque et Vasculaire Diagnostique

4D PC-MRI provides the spatio-temporal imaging of the blood-flow velocity in a region of interest such as the aortic system during a cardiac cycle. However, the resolution and the signal-to-noise ratio (SNR) are limited by acquisition constraints. In order to improve the SNR, we propose to regularize the blood-flow velocity field by introducing a physical constraint, incompressibility, and a temporal quadratic penalization. The advantage of the developed solution is its simple implementation.

Domaines: Traitement du signal et de l'image [eess.SP]

Sébastien Levilly, Jérôme Idier, David Le Touzé, Perrine Paul-Gilloteaux, Félicien Bonnefoy, et al.. Spatio-temporal filtering of blood flow in 4D Phase-Contrast MRI. Society for Magnetic Resonance Angiography, 29th Annual International Conference (SMRA 2017), Oct 2017, Stellenbosch, South Africa. 61, pp.3163 - 3178, 2015. ⟨hal-01720378⟩