Titre
Robust thalamic nuclei segmentation from T1-weighted MRI using polynomial intensity transformation.
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Vidal, J.P.
Auteure/Auteur
Danet, L.
Auteure/Auteur
Péran, P.
Auteure/Auteur
Pariente, J.
Auteure/Auteur
Bach Cuadra, M.
Auteure/Auteur
Zahr, N.M.
Auteure/Auteur
Barbeau, E.J.
Auteure/Auteur
Saranathan, M.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
1863-2661
Statut éditorial
Publié
Date de publication
2024-06
Volume
229
Numéro
5
Première page
1087
Dernière page/numéro d’article
1101
Peer-reviewed
Oui
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Publication Status: ppublish
Résumé
Accurate segmentation of thalamic nuclei, crucial for understanding their role in healthy cognition and in pathologies, is challenging to achieve on standard T1-weighted (T1w) magnetic resonance imaging (MRI) due to poor image contrast. White-matter-nulled (WMn) MRI sequences improve intrathalamic contrast but are not part of clinical protocols or extant databases. In this study, we introduce histogram-based polynomial synthesis (HIPS), a fast preprocessing transform step that synthesizes WMn-like image contrast from standard T1w MRI using a polynomial approximation for intensity transformation. HIPS was incorporated into THalamus Optimized Multi-Atlas Segmentation (THOMAS) pipeline, a method developed and optimized for WMn MRI. HIPS-THOMAS was compared to a convolutional neural network (CNN)-based segmentation method and THOMAS modified for the use of T1w images (T1w-THOMAS). The robustness and accuracy of the three methods were tested across different image contrasts (MPRAGE, SPGR, and MP2RAGE), scanner manufacturers (PHILIPS, GE, and Siemens), and field strengths (3 T and 7 T). HIPS-transformed images improved intra-thalamic contrast and thalamic boundaries, and HIPS-THOMAS yielded significantly higher mean Dice coefficients and reduced volume errors compared to both the CNN method and T1w-THOMAS. Finally, all three methods were compared using the frequently travelling human phantom MRI dataset for inter- and intra-scanner variability, with HIPS displaying the least inter-scanner variability and performing comparably with T1w-THOMAS for intra-scanner variability. In conclusion, our findings highlight the efficacy and robustness of HIPS in enhancing thalamic nuclei segmentation from standard T1w MRI.
PID Serval
serval:BIB_9604D6F4D5B0
PMID
Date de création
2024-04-02T08:19:11.565Z
Date de création dans IRIS
2025-05-21T03:15:24Z