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 Speck^2,4,5,6

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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