Comparison of MRI-based automated segmentation methods and functional neurosurgery targeting with direct visualization of the Ventro-intermediate thalamic nucleus at 7T.

Détails

ID Serval
serval:BIB_B1F0F0F9F61B
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Comparison of MRI-based automated segmentation methods and functional neurosurgery targeting with direct visualization of the Ventro-intermediate thalamic nucleus at 7T.
Périodique
Scientific reports
Auteur(s)
Najdenovska E., Tuleasca C., Jorge J., Maeder P., Marques J.P., Roine T., Gallichan D., Thiran J.P., Levivier M., Bach Cuadra M.
ISSN
2045-2322 (Electronic)
ISSN-L
2045-2322
Statut éditorial
Publié
Date de publication
04/02/2019
Peer-reviewed
Oui
Volume
9
Numéro
1
Pages
1119
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: epublish
Résumé
The ventro-intermediate nucleus (Vim), as part of the motor thalamic nuclei, is a commonly used target in functional stereotactic neurosurgery for treatment of drug-resistant tremor. As it cannot be directly visualized on routinely used magnetic resonance imaging (MRI), its clinical targeting is performed using indirect methods. Recent literature suggests that the Vim can be directly visualized on susceptibility-weighted imaging (SWI) acquired at 7 T. Our work aims to assess the distinguishable Vim on 7 T SWI in both healthy-population and patients and, using it as a reference, to compare it with: (1) The clinical targeting, (2) The automated parcellation of thalamic subparts based on 3 T diffusion MRI (dMRI), and (3) The multi-atlas segmentation techniques. In 95.2% of the data, the manual outline was adjacent to the inferior lateral border of the dMRI-based motor-nuclei group, while in 77.8% of the involved cases, its ventral part enclosed the Guiot points. Moreover, the late MRI signature in the patients was always observed in the anterior part of the manual delineation and it overlapped with the multi-atlas outline. Overall, our study provides new insight on Vim discrimination through MRI and imply novel strategies for its automated segmentation, thereby opening new perspectives for standardizing the clinical targeting.
Mots-clé
Ventro-intermediate thalamic nucleus, magnetic resonance imaging, ultra-high field, 7T, Neurosurgery, image segmentation
Pubmed
Web of science
Open Access
Oui
Création de la notice
13/02/2019 12:34
Dernière modification de la notice
20/08/2019 16:20
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