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Connectivity-Based Parcellation of the Cortical Mantle Using q-Ball Diffusion Imaging
Joint Authors
Perrin, Muriel
Cointepas, Yann
Cachia, Arnaud
Poupon, Cyril
Thirion, Bertrand
Rivière, Denis
Cathier, Pascal
El Kouby, Vincent
Constantinesco, André
Le Bihan, Denis
Mangin, Jean-François
Source
International Journal of Biomedical Imaging
Issue
Vol. 2008, Issue 2008 (31 Dec. 2008), pp.1-18, 18 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2008-01-22
Country of Publication
Egypt
No. of Pages
18
Main Subjects
Abstract EN
This paper exploits the idea that each individual brain region has a specific connection profile to create parcellations of the cortical mantle using MR diffusion imaging.
The parcellation is performed in two steps.
First, the cortical mantle is split at a macroscopic level into 36 large gyri using a sulcus recognition system.
Then, for each voxel of the cortex, a connection profile is computed using a probabilistic tractography framework.
The tractography is performed from q-ball fields using regularized particle trajectories.
Fiber ODF are inferred from the q-balls using a sharpening process focusing the weight around the q-ball local maxima.
A sophisticated mask of propagation computed from a T1-weighted image perfectly aligned with the diffusion data prevents the particles from crossing the cortical folds.
During propagation, the particles father child particles in order to improve the sampling of the long fascicles.
For each voxel, intersection of the particle trajectories with the gyri lead to a connectivity profile made up of only 36 connection strengths.
These profiles are clustered on a gyrus by gyrus basis using a K-means approach including spatial regularization.
The reproducibility of the results is studied for three subjects using spatial normalization.
American Psychological Association (APA)
Perrin, Muriel& Cointepas, Yann& Cachia, Arnaud& Poupon, Cyril& Thirion, Bertrand& Rivière, Denis…[et al.]. 2008. Connectivity-Based Parcellation of the Cortical Mantle Using q-Ball Diffusion Imaging. International Journal of Biomedical Imaging،Vol. 2008, no. 2008, pp.1-18.
https://search.emarefa.net/detail/BIM-987845
Modern Language Association (MLA)
Perrin, Muriel…[et al.]. Connectivity-Based Parcellation of the Cortical Mantle Using q-Ball Diffusion Imaging. International Journal of Biomedical Imaging No. 2008 (2008), pp.1-18.
https://search.emarefa.net/detail/BIM-987845
American Medical Association (AMA)
Perrin, Muriel& Cointepas, Yann& Cachia, Arnaud& Poupon, Cyril& Thirion, Bertrand& Rivière, Denis…[et al.]. Connectivity-Based Parcellation of the Cortical Mantle Using q-Ball Diffusion Imaging. International Journal of Biomedical Imaging. 2008. Vol. 2008, no. 2008, pp.1-18.
https://search.emarefa.net/detail/BIM-987845
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-987845