Design of multishell sampling schemes with uniform coverage in diffusion MRI

Abstract : PURPOSE: In diffusion MRI, a technique known as diffusion spectrum imaging reconstructs the propagator with a discrete Fourier transform, from a Cartesian sampling of the diffusion signal. Alternatively, it is possible to directly reconstruct the orientation distribution function in q-ball imaging, providing so-called high angular resolution diffusion imaging. In between these two techniques, acquisitions on several spheres in q-space offer an interesting trade-off between the angular resolution and the radial information gathered in diffusion MRI. A careful design is central in the success of multishell acquisition and reconstruction techniques. METHODS: The design of acquisition in multishell is still an open and active field of research, however. In this work, we provide a general method to design multishell acquisition with uniform angular coverage. This method is based on a generalization of electrostatic repulsion to multishell. RESULTS: We evaluate the impact of our method using simulations, on the angular resolution in one and two bundles of fiber configurations. Compared to more commonly used radial sampling, we show that our method improves the angular resolution, as well as fiber crossing discrimination. DISCUSSION: We propose a novel method to design sampling schemes with optimal angular coverage and show the positive impact on angular resolution in diffusion MRI.
Type de document :
Article dans une revue
Magnetic Resonance in Medicine, Wiley, 2013, 69 (6), pp.1534-1540. 〈10.1002/mrm.24736〉
Liste complète des métadonnées

Littérature citée [39 références]  Voir  Masquer  Télécharger

https://hal.inria.fr/hal-00821688
Contributeur : Emmanuel Caruyer <>
Soumis le : samedi 11 mai 2013 - 19:19:31
Dernière modification le : samedi 2 décembre 2017 - 01:27:36
Document(s) archivé(s) le : lundi 12 août 2013 - 05:00:40

Fichier

article.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

Citation

Emmanuel Caruyer, Christophe Lenglet, Guillermo Sapiro, Rachid Deriche. Design of multishell sampling schemes with uniform coverage in diffusion MRI. Magnetic Resonance in Medicine, Wiley, 2013, 69 (6), pp.1534-1540. 〈10.1002/mrm.24736〉. 〈hal-00821688〉

Partager

Métriques

Consultations de la notice

898

Téléchargements de fichiers

937