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Spectroscopic imaging with prospective motion correction and retrospective phase correction
Author(s) -
Lange Thomas,
Maclaren Julian,
Buechert Martin,
Zaitsev Maxim
Publication year - 2012
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.23136
Subject(s) - magnetic resonance imaging , tracking (education) , motion (physics) , phase (matter) , voxel , computer science , nuclear magnetic resonance , computer vision , physics , radiology , medicine , psychology , pedagogy , quantum mechanics
Motion‐induced artifacts are much harder to recognize in magnetic resonance spectroscopic imaging than in imaging experiments and can therefore lead to erroneous interpretation. A method for prospective motion correction based on an optical tracking system has recently been proposed and has already been successfully applied to single voxel spectroscopy. In this work, the utility of prospective motion correction in combination with retrospective phase correction is evaluated for spectroscopic imaging in the human brain. Retrospective phase correction, based on the interleaved reference scan method, is used to correct for motion‐induced frequency shifts and ensure correct phasing of the spectra across the whole spectroscopic imaging slice. It is demonstrated that the presented correction methodology can reduce motion‐induced degradation of spectroscopic imaging data. Magn Reson Med, 2011. © 2011 Wiley‐Liss, Inc.