Real-time correction by optical tracking with integrated geometric distortion correction for reducing motion artifacts in functional MRI

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
David J RotenbergS J Graham

Abstract

Head motion artifacts are a major problem in functional MRI that limit its use in neuroscience research and clinical settings. Real-time scan-plane correction by optical tracking has been shown to correct slice misalignment and nonlinear spin-history artifacts; however, residual artifacts due to dynamic magnetic field nonuniformity may remain in the data. A recently developed correction technique, Phase Labeling for Additional Coordinate Encoding, can correct for absolute geometric distortion using only the complex image data from two echo planar images with slightly shifted k-space trajectories. An approach is presented that integrates Phase Labeling for Additional Coordinate Encoding into a real-time scan-plane update system by optical tracking, applied to a tissue-equivalent phantom undergoing complex motion and an functional MRI finger tapping experiment with overt head motion to induce dynamic field nonuniformity. Experiments suggest that such integrated volume-by-volume corrections are very effective at artifact suppression, with potential to expand functional MRI applications.

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Citations

Nov 10, 2015·Magnetic Resonance in Medical Sciences : MRMS : an Official Journal of Japan Society of Magnetic Resonance in Medicine·Kousaku SaotomeAkira Matsumura
Jul 3, 2013·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Melvyn B OoiRoland Bammer
Sep 11, 2013·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Mario ZellerHerbert Köstler
Jun 12, 2016·Journal of Neuroscience Methods·Z Faraji-DanaS J Graham
Jan 24, 2017·IEEE Transactions on Medical Imaging·Xin ChenAndrew P King
Jun 10, 2018·Human Brain Mapping·Pei HuangMarta M Correia
Nov 26, 2015·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Hirad KarimiCharles H Cunningham
Aug 29, 2019·Frontiers in Neuroscience·Sanam MaknojiaS J Graham
Apr 3, 2021·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·David B ParkerQolamreza R Razlighi

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