Motion Corrected 3D Liver undersampled MRI

Abstract : The emergence of sparse reconstruction methods for undersampled data in Magnetic Resonance Imaging (MRI), such as Compressed Sensing (CS), have been valuable tools to accelerate data acquisition while preserving accurate image reconstruction. However, sparse reconstruction methods, including CS, are not easy to apply when there is intra-frame motion. Such is the case of free-breathing dynamic MRI in the liver. It is difficult to avoid non-rigid motion artifacts, even more so in volumetric acquisitions. To avoid these kind of artifacts, we propose a new reconstruction technique tailored for dynamic liver imaging by estimating the motion between frames to correct inconsistencies in k-space measurements. In this work, we describe how the proposed method addresses an increase in image efficiency for free-breathing dynamic 3D liver MRI, producing gains up to 6 dB with respect of traditional CS framework. Our technique can be readily extended to 3D CINE liver MRI without requiring additional information.
Type de document :
Pré-publication, Document de travail
2014
Liste complète des métadonnées

Littérature citée [28 références]  Voir  Masquer  Télécharger

https://hal.inria.fr/hal-01080892
Contributeur : Felipe Yanez <>
Soumis le : lundi 1 juin 2015 - 09:39:22
Dernière modification le : lundi 1 juin 2015 - 10:47:40
Document(s) archivé(s) le : lundi 24 avril 2017 - 19:42:34

Fichier

3dLiver.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : hal-01080892, version 2

Citation

Felipe Yanez, Pablo Irarrazaval. Motion Corrected 3D Liver undersampled MRI. 2014. 〈hal-01080892v2〉

Partager

Métriques

Consultations de la notice

48

Téléchargements de fichiers

59