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In‐plane motion correction for MR spectroscopic imaging
Author(s) -
Haupt Christine I.,
Kiefer Andreas P.,
Maudsley Andrew A.
Publication year - 1998
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.1910390512
Subject(s) - magnetic resonance spectroscopic imaging , translation (biology) , rotation (mathematics) , nuclear magnetic resonance , motion (physics) , sensitivity (control systems) , computer science , magnetic resonance imaging , artificial intelligence , computer vision , encoding (memory) , plane (geometry) , neuroimaging , physics , chemistry , mathematics , radiology , medicine , biochemistry , geometry , electronic engineering , messenger rna , engineering , gene , psychiatry
A motion‐detection method is described that is specifically suited for MR spectroscopic imaging (MRSI) studies. Information on in‐plane rotation and translation of the subject was obtained using external spatial reference markers that are uniquely identified via their chemical shift. The marker locations were obtained directly from the acquired data at each encoding step, and no additional data acquisition was required. This method was applied to brain 1 H MRSI studies that include subcutaneous lipid signals, which otherwise result in enhanced sensitivity to subject motion.