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Communication Dans Un Congrès Année : 2022

MORE-SPARKLING: non-cartesian trajectories with minimized off-resonance effects

Résumé

We augment the recently introduced SPARKLING algorithm and propose an improved mathematical formulation that takes the temporal dependence of the MR signal into account. This prevents the trajectories from sampling similar portions of k-space at different times, thereby reducing distortions and blurring induced by $B_0$ inhomogenieties. Overall, these trajectories present a smooth distribution over time in k-space and Minimized Off-Resonance Effects (MORE-SPARKLING), verified both retrospectively and prospectively with scans performed in vivo at 3T on a healthy volunteer.
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Dates et versions

hal-03923706 , version 1 (04-01-2023)

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  • HAL Id : hal-03923706 , version 1

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Chaithya Giliyar Radhakrishna, Guillaume Daval-Frérot, Aurélien Massire, Boris Mailhé, Mariappan Nadar, et al.. MORE-SPARKLING: non-cartesian trajectories with minimized off-resonance effects. Joint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting, May 2022, London, United Kingdom. ⟨hal-03923706⟩
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