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| HAL : hal-00349706, version 1 |
| PubMed : 12270226 |
| Fiche détaillée |  Récupérer au format |
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| Medical Image Analysis 6, 3 (2002) 191-8 |
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| Distortion correction and robust tensor estimation for MR diffusion imaging. |
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| J.-F. Mangin 1, 2, 3C. Poupon 4 |
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| (09/2002) |
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| This paper presents a new procedure to estimate the diffusion tensor from a sequence of diffusion-weighted images. The first step of this procedure consists of the correction of the distortions usually induced by eddy-current related to the large diffusion-sensitizing gradients. This correction algorithm relies on the maximization of mutual information to estimate the three parameters of a geometric distortion model inferred from the acquisition principle. The second step of the procedure amounts to replacing the standard least squares-based approach by the Geman-McLure M-estimator, in order to reduce outlier-related artefacts. Several experiments prove that the whole procedure highly improves the quality of the final diffusion maps. |
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| 1 : | Laboratoire de Neuroimagerie Assistée par Ordinateur (LNAO) |
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CEA : DSV/I2BM/NEUROSPIN |
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| 2 : | Service Hospitalier Frédéric Joliot (SHFJ) |
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CEA : DSV/I2BM |
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| 3 : | Center for Neuroscience and Behavioral Medicine |
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Children's National Medical Center |
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| 4 : | Laboratoire d'Imagerie et de Spectroscopie (LRMN) |
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CEA : DSV/I2BM/NEUROSPIN |
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| 5 : | Service NEUROSPIN (NEUROSPIN) |
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CEA : DSV/I2BM |
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| 6 : | IFR de Neuroimagerie Fonctionnelle (IFR 49) |
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CEA |
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| 7 : | Human Brain Research Center [Kyoto] (HBRC) |
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Kyoto University |
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| 8 : | Département Traitement du Signal et des Images (TSI) |
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Télécom ParisTech – CNRS : UMR5141 |
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| 9 : | Laboratoire Traitement et Communication de l'Information [Paris] (LTCI) |
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Télécom ParisTech – CNRS : UMR5141 |
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| 10 : | QUANTUM (QUANTUM) |
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Johannes Gutenberg-Universität Mainz |
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| Domaine | : | Sciences du Vivant/Ingénierie biomédicale/Imagerie |
| hal-00349706, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00349706 | |
| oai:hal.archives-ouvertes.fr:hal-00349706 | |
| Contributeur : Denis Le Bihan | |
| Soumis le : Samedi 3 Janvier 2009, 17:35:48 | |
| Dernière modification le : Samedi 3 Janvier 2009, 17:35:48 | |
