Fully-sampled and accelerated (GRAPPA R=3 and compressed sensing R=7.6) 4D Flow MRI acquisitions were compared for velocity profiles, flow rates and peak velocities in a rigid cardiovascular phantom under complex pulsatile flow conditions. Compatible CFD simulations were performed under the same flow conditions as a complementary modality. Good agreement was found between the three MR techniques, but discrepancies relative to the principle of mass conservation were noticed. Even though CFD presents some limitations as well, it appears to be a useful tool to investigate these differences.
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