Abstract #3298

Combining navigator-based prospective and data-driven retrospective motion correction for high resolution 7T multi-slice T2W MRI.

Vincent Oltman Boer¹, Lucilio Cordero Grande², Jan Ole Pedersen³, Martin Prener⁴, Esben Thade Petersen^1,5, Olaf B Paulson^4,6, Mads Andersen^3,7, and Giske Opheim^4,8

¹Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Amager and Hvidovre, Copenhagen, Denmark, ²Biomedical Image Technologies, ETSI Telecomunicación, Universidad Politécnica de Madrid and CIBER-BBN, Madrid, Spain, ³Philips Healthcare, Copenhagen, Denmark, ⁴Neurobiology Research Unit, Department of Neurology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark, ⁵Section for Magnetic Resonance, DTU Health Tech, Kgs Lyngby, Denmark, ⁶Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark, ⁷Lund University Bioimaging Center, Lund University, Lund, Sweden, ⁸Department of Radiology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark

Synopsis

High-resolution multi-slice T2W imaging at ultra-high field is highly sensitive to motion due to high tissue-CSF contrast and the k-space filling pattern. In this study we investigated the combination of 3D prospective and in-plane retrospective motion correction to improve image quality. We observed that a combination of navigator based prospective and data-driven retrospective correction is able to correct most severe motion artifacts during scanning, and remove smaller residual artifacts in reconstruction.

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