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Abstract #4440

Direct comparison of fat navigators and Moiré phase tracking for retrospective brain motion correction at 7T

Frederic Gretsch1, Hendrik Mattern2, Daniel Gallichan3, and Oliver Speck2,4,5,6

1LIFMET, EPFL, Lausanne, Switzerland, 2Department of Biomedical Magnetic Resonance, Institute of Experimental Physics, Otto-von-Guericke-University, Magdeburg, Germany, 3CUBRIC, School of Engineering, Cardiff University, United Kingdom, 4German Center for Neurodegenerative Disease, Magdeburg, Germany, 5Center for Behavioral Brain Sciences, Magdeburg, Germany, 6Leibniz Institute for Neurobiology, Magdeburg, Germany

Retrospective rigid body motion correction based on FatNavs or MPT motion information are directly compared. Both modalities significantly improve image quality of very high resolution anatomical images, but both suffer from drawbacks: rigid marker fixation during long scans for MPT and low temporal resolution for FatNavs. Quantitative analysis confirms these visual observations.

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