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Reduction of B0 inhomogeneity effects in triple-quantum-filtered sodium imaging

Triple-quantum (TQ) filtered sodium MR imaging has been proposed for separation of sodium signal arising from different physiological compartments. In a three-pulse sequence without refocussing pulse, the TQ signal is strongly sensitive to inhomogeneities of the B0 field. We examine the dependence o...

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Main Authors: Matthies, Christian (Author) , Nagel, Armin Michael (Author) , Schad, Lothar R. (Author) , Bachert, Peter (Author)
Format: Article (Journal)
Language:English
Published: 2010
In: Journal of magnetic resonance
Year: 2010, Volume: 202, Issue: 2, Pages: 239-244
ISSN:1096-0856
DOI:10.1016/j.jmr.2009.11.004
Online Access:Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.jmr.2009.11.004
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S1090780709003255
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Author Notes:Christian Matthies, Armin M. Nagel, Lothar R. Schad, Peter Bachert

MARC

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520 |a Triple-quantum (TQ) filtered sodium MR imaging has been proposed for separation of sodium signal arising from different physiological compartments. In a three-pulse sequence without refocussing pulse, the TQ signal is strongly sensitive to inhomogeneities of the B0 field. We examine the dependence of the TQ signal intensity on the sequence parameters and propose a modified phase-cycling scheme to improve image quality. A new method for correction of B0 inhomogeneity artefacts in TQ filtered sodium imaging is presented which requires only two acquisitions to obtain a correction as far as the B0 inhomogeneity and the pulse widths are not too large. The method was verified in phantom experiments. 
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