Echo-time independent signal modulations for strongly coupled systems in triple echo localization schemes: an extension of S-PRESS editing.

Détails

ID Serval
serval:BIB_638B1BDAB21E
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Echo-time independent signal modulations for strongly coupled systems in triple echo localization schemes: an extension of S-PRESS editing.
Périodique
Journal of Magnetic Resonance
Auteur(s)
Kickler N., Gambarota G., Mekle R., Gruetter R., Mulkern R.
ISSN
1096-0856[electronic], 1090-7807[linking]
Statut éditorial
Publié
Date de publication
2010
Volume
203
Numéro
1
Pages
108-112
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
The double spin-echo point resolved spectroscopy sequence (PRESS) is a widely used method and standard in clinical MR spectroscopy. Existence of important J-modulations at constant echo times, depending on the temporal delays between the rf-pulses, have been demonstrated recently for strongly coupled spin systems and were exploited for difference editing, removing singlets from the spectrum (strong-coupling PRESS, S-PRESS). A drawback of this method for in vivo applications is that large signal modulations needed for difference editing occur only at relatively long echo times. In this work we demonstrate that, by simply adding a third refocusing pulse (3S-PRESS), difference editing becomes possible at substantially shorter echo times while, as applied to citrate, more favorable lineshapes can be obtained. For the example of an AB system an analytical description of the MR signal, obtained with this triple refocusing sequence (3S-PRESS), is provided.
Mots-clé
Algorithms, Calibration, Citrates/chemistry, Electromagnetic Fields, Humans, Male, Nuclear Magnetic Resonance, Biomolecular/methods, Prostate/chemistry
Pubmed
Web of science
Création de la notice
04/08/2010 16:28
Dernière modification de la notice
20/08/2019 15:20
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