Chemical shift encoding (CSE) for sensitive fluorine-19 MRI of perfluorocarbons with complex spectra.

Détails

Ressource 1Télécharger: vanHeeswijk_19FCSE_forServal_wCover.pdf (1150.63 [Ko])
Etat: Public
Version: de l'auteur
Licence: Non spécifiée
ID Serval
serval:BIB_F962A7DFE573
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Chemical shift encoding (CSE) for sensitive fluorine-19 MRI of perfluorocarbons with complex spectra.
Périodique
Magnetic resonance in medicine
Auteur(s)
van Heeswijk R.B., Colotti R., Darçot E., Delacoste J., Pellegrin M., Piccini D., Hernando D.
ISSN
1522-2594 (Electronic)
ISSN-L
0740-3194
Statut éditorial
Publié
Date de publication
05/2018
Peer-reviewed
Oui
Volume
79
Numéro
5
Pages
2724-2730
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
To implement a fluorine-19 ( <sup>19</sup> F) chemical shift encoding (CSE) approach for the sensitive imaging of molecules with multi-resonance spectra to remove their chemical shift displacement (CSD) artifacts, and to characterize its sensitivity versus established pulse sequences.
The feasibility of CSE spoiled gradient echo (GRE) and balanced steady-state free precession (bSSFP) was first demonstrated in a phantom study. The dependence of the sensitivity of CSE-bSSFP on several pulse sequence parameters was then established, after which the occurrence of out-of-plane excitation was assessed for 2D and 3D techniques. Next, the sensitivity (in mm <sup>-3</sup> s <sup>-0.5</sup> ) of both CSE techniques was compared to bSSFP ultrashort echo time (bSSFP-UTE) imaging and multi-chemical-shift-selective turbo spin echo (MCSS-TSE) in a second phantom study. Finally, the sensitivity of the CSE-bSSFP, bSSFP-UTE, and MCSS-TSE pulse sequences was compared in a preliminary in vivo mouse study.
Both CSE approaches were successfully implemented and resulted in negligible residual CSD artifacts, while large-volume 3D acquisitions should be considered to reduce problems related to out-of-plane excitation. CSE-bSSFP was shown to have a higher sensitivity than the bSSFP-UTE and MCSS-TSE pulse sequences (15.8 ± 1.3 vs. 11.7 ± 1.0 vs. 13.3 ± 0.9 mm <sup>-3</sup> s <sup>-0.5</sup> , respectively, P < 0.001), whereas CSE-GRE technique had a lower sensitivity (4.8 ± 1.1 mm <sup>-3</sup> s <sup>-0.5</sup> ).
CSE <sup>19</sup> F MR imaging enables the unambiguous visualization of compounds with complex spectra, and provides high sensitivity both in vitro and in vivo. Magn Reson Med 79:2724-2730, 2018. © 2017 International Society for Magnetic Resonance in Medicine.
Mots-clé
Abdomen/diagnostic imaging, Animals, Artifacts, Female, Fluorine-19 Magnetic Resonance Imaging/methods, Fluorocarbons/chemistry, Image Processing, Computer-Assisted/methods, Mice, Mice, Knockout, Phantoms, Imaging, Signal Processing, Computer-Assisted, chemical shift displacement, chemical shift encoding, complex spectra, fluorine MRI, perfluorocarbon
Pubmed
Web of science
Création de la notice
22/09/2017 14:11
Dernière modification de la notice
20/08/2019 17:25
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