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Coil-based artifact reduction

Atkinson, D; Larkman, DJ; Batchelor, PG; Hill, DL; Hajnal, JV; (2004) Coil-based artifact reduction. Magnetic Resonance in Medicine , 52 (4) 825 - 830. 10.1002/mrm.20226.

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Abstract

Multiple MRI receiver coils provide extra information and canenable the reconstruction of multiple images using data fromdifferent combinations of coils. Comparison of these imagesshows that artifacts due to motion or flowing blood appear withdifferent 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 theartifact by comparing reconstructions from various coil combinationsand favoring a self-consistent solution. It is demonstratedthat images artifacted by blood flowing in the aorta, ortranslational motion of the head, can be improved. Multiple MRI receiver coils provide extra information and canenable the reconstruction of multiple images using data fromdifferent combinations of coils. Comparison of these imagesshows that artifacts due to motion or flowing blood appear withdifferent 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 theartifact by comparing reconstructions from various coil combinationsand favoring a self-consistent solution. It is demonstratedthat images artifacted by blood flowing in the aorta, ortranslational motion of the head, can be improved.

Type:Article
Title:Coil-based artifact reduction
DOI:10.1002/mrm.20226
Additional information:DA - 20040929
Keywords:Algorithms, Aorta, physiology, Artifacts, Blood Flow Velocity, Equipment Design, Head Movements, Humans, Image Processing, Computer-Assisted, methods, Magnetic Resonance Imaging, instrumentation, Research Support, Non-U.S.Gov't
UCL classification:UCL > School of Life and Medical Sciences > Faculty of Medical Sciences > Medicine (Division of)
UCL > School of BEAMS > Faculty of Engineering Science > Medical Physics and Bioengineering

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