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  Center-out echo-planar spectroscopic imaging with correction of gradient-echo phase and time shifts

Labadie, C., Hetzer, S., Schulz, J., Mildner, T., Aubert-Frécon, M., & Möller, H. E. (2013). Center-out echo-planar spectroscopic imaging with correction of gradient-echo phase and time shifts. Magnetic Resonance in Medicine, 70(1), 16-24. doi:10.1002/mrm.24428.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D22C-C Version Permalink: http://hdl.handle.net/21.11116/0000-0003-AD4F-3
Genre: Journal Article

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Labadie_2012_Center-out.pdf (Publisher version), 6MB
 
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 Creators:
Labadie, Christian1, 2, 3, Author              
Hetzer, Stefan4, Author              
Schulz, Jessica5, Author              
Mildner, Toralf1, Author              
Aubert-Frécon, Monique2, Author
Möller, Harald E.1, 3, Author              
Affiliations:
1Methods and Development Unit Nuclear Magnetic Resonance, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634558              
2Laboratoire de Spectrométrie Ionique et Moléculaire, Université Claude Bernard, Lyon, France, ou_persistent22              
3Faculty of Physics and Earth Sciences, University of Leipzig, Germany, ou_persistent22              
4Bernstein Center for Computational Neuroscience, Berlin, Germany, ou_persistent22              
5Department Neurophysics, MPI for Human Cognitive and Brain Sciences, Max Planck Society, Leipzig, DE, ou_634550              

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Free keywords: Echo-planar spectroscopic imaging; Center-out trajectory; Gradient-echo phase correction; Gradient acoustic frequency
 Abstract: A procedure to prevent the formation of image and spectral Nyquist ghosts in echo-planar spectroscopic imaging is introduced. It is based on a novel Cartesian center-out echo-planar spectroscopic imaging trajectory, referred to as EPSICO, and combined with a correction of the gradient-echo phase and time shifts. Processing of homogenous sets of forward and reflected echoes is no longer necessary, resulting in an optimized spectral width. The proposed center-out trajectory passively prevents the formation of Nyquist ghosts by privileging the acquisition of the center k-space line with forward echoes at the beginning of an echo-planar spectroscopic imaging dwell time and by ensuring that all k-space lines and their respective complex conjugates are acquired at equal time intervals. With the proposed procedure, concentrations of N-acetyl aspartate, creatine, choline, glutamate, and myo-inositol were reliably determined in human white matter at 3 T.

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Language(s): eng - English
 Dates: 2012-06-292012-03-272012-07-022012-07-272013-07-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1002/mrm.24428
PMID: 22847848
Other: Epub 2012
 Degree: -

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Title: Magnetic Resonance in Medicine
Source Genre: Journal
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Publ. Info: New York : Wiley-Liss
Pages: 9 Volume / Issue: 70 (1) Sequence Number: - Start / End Page: 16 - 24 Identifier: ISSN: 0740-3194
CoNE: /journals/resource/954925538149