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Coil‐based artifact reduction
Author(s) -
Atkinson David,
Larkman David J.,
Batchelor Philipp G.,
Hill Derek L.G.,
Hajnal Joseph V.
Publication year - 2004
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.20226
Subject(s) - artifact (error) , electromagnetic coil , sensitivity (control systems) , computer science , reduction (mathematics) , head (geology) , nuclear magnetic resonance , biomedical engineering , artificial intelligence , materials science , computer vision , physics , mathematics , medicine , electronic engineering , geology , quantum mechanics , geomorphology , engineering , geometry
Abstract Multiple MRI receiver coils provide extra information and can enable the reconstruction of multiple images using data from different combinations of coils. Comparison of these images shows that artifacts due to motion or flowing blood appear with different intensities due to the differing coil sensitivities. Typically, the artifact appears amplified in regions of low coil sensitivity. An optimization routine was developed to correct for the artifact by comparing reconstructions from various coil combinations and favoring a self‐consistent solution. It is demonstrated that images artifacted by blood flowing in the aorta, or translational motion of the head, can be improved. Magn Reson Med 52:825–830, 2004. © 2004 Wiley‐Liss, Inc.