Accelerated MR imaging with spread spectrum encoding
Détails
Etat: Public
Version: de l'auteur⸱e
ID Serval
serval:BIB_4671A46C2DFF
Type
Actes de conférence (partie): contribution originale à la littérature scientifique, publiée à l'occasion de conférences scientifiques, dans un ouvrage de compte-rendu (proceedings), ou dans l'édition spéciale d'un journal reconnu (conference proceedings).
Sous-type
Abstract (résumé de présentation): article court qui reprend les éléments essentiels présentés à l'occasion d'une conférence scientifique dans un poster ou lors d'une intervention orale.
Collection
Publications
Institution
Titre
Accelerated MR imaging with spread spectrum encoding
Titre de la conférence
ISMRM 2011, 19th Annual Meeting of the International Society for Magnetic Resonance in Medicine
Adresse
Montreal, Quebec, Canada, May 7-13, 2011
ISBN
1524-6965
Statut éditorial
Publié
Date de publication
2011
Volume
19
Série
Proceedings of the International Society for Magnetic Resonance in Medicine
Pages
2808
Langue
anglais
Résumé
We advocate the use of a novel compressed sensing
technique for accelerating the magnetic resonance image
acquisition process, coined spread spectrum MR imaging or
simply s2MRI. The method resides in pre-modulating the
signal of interest by a linear chirp, resulting from the
application of quadratic phase profiles, before random
k-space under-sampling with uniform average density. The
effectiveness of the procedure is theoretically
underpinned by the optimization of the coherence between
the sparsity and sensing bases. The application of the
technique for single coil acquisitions is thoroughly
studied by means of numerical simulations as well as
phantom and in vivo experiments on a 7T scanner. The
corresponding results suggest a favorable comparison with
state-of-the-art variable density k-space under-sampling
approaches.
technique for accelerating the magnetic resonance image
acquisition process, coined spread spectrum MR imaging or
simply s2MRI. The method resides in pre-modulating the
signal of interest by a linear chirp, resulting from the
application of quadratic phase profiles, before random
k-space under-sampling with uniform average density. The
effectiveness of the procedure is theoretically
underpinned by the optimization of the coherence between
the sparsity and sensing bases. The application of the
technique for single coil acquisitions is thoroughly
studied by means of numerical simulations as well as
phantom and in vivo experiments on a 7T scanner. The
corresponding results suggest a favorable comparison with
state-of-the-art variable density k-space under-sampling
approaches.
Mots-clé
Compressed sensing, Magnetic resonance imaging, Spread, spectrum, LTS5, CIBM-SPC, CIBM-AIT
Création de la notice
07/01/2014 9:11
Dernière modification de la notice
20/08/2019 14:51
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