Using 3D-SHORE and MAP-MRI to Obtain Both Tractography and Microstructural Constrast from a Clinical DMRI Acquisition - Inria - Institut national de recherche en sciences et technologies du numérique
Communication Dans Un Congrès Année : 2015

Using 3D-SHORE and MAP-MRI to Obtain Both Tractography and Microstructural Constrast from a Clinical DMRI Acquisition

Résumé

Diffusion MRI (dMRI) is used to characterize the directional-ity and microstructural properties of brain white matter (WM) by measuring the diffusivity of water molecules. In clinical practice the number of dMRI samples that can be obtained is limited, and one often uses short scanning protocols that acquire just 32 to 64 different gradient directions using a single gradient strength (b-value). Such 'single shell' scanning protocols restrict one to use methods that have assumptions on the radial decay of the dMRI signal over different b-values, which introduces estimation biases. In this work we show, that by simply spreading the same number of samples over multiple b-values (i.e. multi-shell) we can accurately estimate both the WM directionality using 3D-SHORE and characterize the radially dependent diffusion microstructure measures using MAP-MRI. We validate our approach by undersampling both noisy synthetic and human brain data of the Human Connectome Project, proving this approach is well-suited for clinical applications.
Fichier principal
Vignette du fichier
ISBI2015b.pdf (1.27 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01140011 , version 1 (07-04-2015)

Identifiants

  • HAL Id : hal-01140011 , version 1

Citer

Rutger H.J. Fick, Mauro Zucchelli, Gabriel Girard, Maxime Descoteaux, Gloria Menegaz, et al.. Using 3D-SHORE and MAP-MRI to Obtain Both Tractography and Microstructural Constrast from a Clinical DMRI Acquisition. International Symposium on BIOMEDICAL IMAGING: From Nano to Macro, Apr 2015, Brooklyn, New York City, United States. ⟨hal-01140011⟩
200 Consultations
540 Téléchargements

Partager

More