 |
|
 |
|
|
|
|
|
| HAL: hal-00349706, version 1 |
| PubMed: 12270226 |
| Detailed view |  Export this paper |
|
|
| Medical Image Analysis 6, 3 (2002) 191-8 |
|
|
|
|
| Distortion correction and robust tensor estimation for MR diffusion imaging. |
|
|
| J.-F. Mangin 1, 2, 3C. Poupon 4 |
|
|
| (2002-09) |
|
|
|
| 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. |
|
|
|
|
|
|
|
|
|
|
|
| 1: | Laboratoire de Neuroimagerie Assistée par Ordinateur (LNAO) |
|
|
|
CEA : DSV/I2BM/NEUROSPIN |
|
|
| 2: | Service Hospitalier Frédéric Joliot (SHFJ) |
|
|
|
CEA : DSV/I2BM |
|
|
| 3: | Center for Neuroscience and Behavioral Medicine |
|
|
|
Children's National Medical Center |
|
|
| 4: | Laboratoire d'Imagerie et de Spectroscopie (LRMN) |
|
|
|
CEA : DSV/I2BM/NEUROSPIN |
|
|
| 5: | Service NEUROSPIN (NEUROSPIN) |
|
|
|
CEA : DSV/I2BM |
|
|
| 6: | IFR de Neuroimagerie Fonctionnelle (IFR 49) |
|
|
|
CEA |
|
|
| 7: | Human Brain Research Center [Kyoto] (HBRC) |
|
|
|
Kyoto University |
|
|
| 8: | Département Traitement du Signal et des Images (TSI) |
|
|
|
Télécom ParisTech – CNRS : UMR5141 |
|
|
| 9: | Laboratoire Traitement et Communication de l'Information [Paris] (LTCI) |
|
|
|
Télécom ParisTech – CNRS : UMR5141 |
|
|
| 10: | QUANTUM (QUANTUM) |
|
|
|
Johannes Gutenberg-Universität Mainz |
|
|
|
|
|
|
|
|
|
| Subject | : | Life Sciences/Bioengineering/Imaging |
| hal-00349706, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00349706 | |
| oai:hal.archives-ouvertes.fr:hal-00349706 | |
| From: Denis Le Bihan | |
| Submitted on: Saturday, 3 January 2009 17:35:48 | |
| Updated on: Saturday, 3 January 2009 17:35:48 | |
