Self-gated free-running 5D whole-heart MRI using blind source separation for automated cardiac motion extraction.

Détails

Ressource 1Télécharger: MontónQuesada_BlindSourceSepCardiacMotion_MRM2024.pdf (5221.44 [Ko])
Etat: Public
Version: Final published version
Licence: CC BY 4.0
ID Serval
serval:BIB_1881335098A1
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Self-gated free-running 5D whole-heart MRI using blind source separation for automated cardiac motion extraction.
Périodique
Magnetic resonance in medicine
Auteur⸱e⸱s
Montón Quesada I., Ogier A.C., Ishida M., Takafuji M., Ito H., Sakuma H., Romanin L., Roy C.W., Prša M., Richiardi J., Yerly J., Stuber M., van Heeswijk R.B.
ISSN
1522-2594 (Electronic)
ISSN-L
0740-3194
Statut éditorial
In Press
Peer-reviewed
Oui
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: aheadofprint
Résumé
To compare two blind source separation (BSS) techniques to principal component analysis and the electrocardiogram for the identification of cardiac triggers in self-gated free-running 5D whole-heart MRI. To ascertain the precision and robustness of the techniques, they were compared in three different noise and contrast regimes.
The repeated superior-inferior (SI) projections of a 3D radial trajectory were used to extract the physiological signals in three cardiac MRI cohorts: (1) 9 healthy volunteers without contrast agent injection at 1.5T, (2) 30 ferumoxytol-injected congenital heart disease patients at 1.5T, and (3) 12 gadobutrol-injected patients with suspected coronary artery disease at 3T. Self-gated cardiac triggers were extracted with the three algorithms (principal component analysis [PCA], second-order blind identification [SOBI], and independent component analysis [ICA]) and the difference with the electrocardiogram triggers was calculated. PCA and SOBI triggers were retained for image reconstruction. The image sharpness was ascertained on whole-heart 5D images obtained with PCA and SOBI and compared among the three cohorts.
SOBI resulted in smaller trigger differences in Cohorts 1 and 3 compared to PCA (p < 0.01) and in all cohorts compared to ICA (p < 0.04). In Cohorts 1 and 3, the sharpness increased significantly in the reconstructed images when using SOBI instead of PCA (p < 0.03), but not in Cohort 2 (p = 0.4).
We have shown that SOBI results in more precisely extracted self-gated triggers than PCA and ICA. The validation across three diverse cohorts demonstrates the robustness of the method against acquisition variability.
Mots-clé
5D whole‐heart cardiovascular MRI, blind source separation, cardiac motion extraction, free‐running, self‐gating
Pubmed
Web of science
Open Access
Oui
Financement(s)
Fonds national suisse / Projets / 310030_215604
Fonds national suisse / Projets / 32003B_201292
Fonds national suisse / Projets / 32003B_182615
Fonds national suisse / Carrières / PZ00P3_202140
Création de la notice
25/10/2024 14:51
Dernière modification de la notice
02/11/2024 7:10
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