0000000000868838
AUTHOR
Kevin Tse-ve-koon
MRI phase control with Optimal Control Theory
International audience
Constant gradient magnetic resonance elastography experiments on phantom and bovine liver
International audience; SynopsisMagnetic Resonance Elastography (MRE) is performed by the application of motion-sensitive gradients. In this study, RF pulses are designed with an optimal control algorithm to obtain a desired magnetization phase distribution. Such pulse, in presence of a constant gradient, allows tosimultaneously perform spatially selective excitation and motion encoding. This offers some advantages when compared to standard MRE encoding strategy. Simulations, phantom and ex vivo experiments show that phase-to-noise ratios are improved. These results demonstrate that optimal control-based pulses can be used to encode motion in the MRE excitation phase with relevant advantage…
Magnetic resonance elastography without oscillating gradients
International audience
A Simplified Framework for Contrast Optimization in MRI
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Contrôle optimal appliqué à l’Elastographie par Résonance Magnétique avec un gradient constant: expériences ex vivo et in vitro
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Contrast Preparation Pulses Robust to B1 and B0 inhomogeneities: an Optimal Control Approach
International audience