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 Petersen1,5, Olaf B Paulson4,6, Mads Andersen3,7, and Giske Opheim4,8
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
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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