Abstract #0865

Motion Compensated Structured Low-rank Reconstruction for Robust 3D Multi-shot EPI fMRI

Xi Chen¹, Wenchuan Wu¹, and Mark chiew^1,2,3

¹Wellcome Centre for Integrative Neuroimaging, FMRIB, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom, ²Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada, ³Physical Sciences, Sunnybrook Research Institute, Toronto, ON, Canada

Synopsis

Keywords: Sparse & Low-Rank Models, Motion Correction, fMRI; 3D EPIStructured low-rank (SLR) reconstruction has been successfully used in 3D multi-shot EPI for fMRI to improve its robustness to inter-shot phase variations. This work proposed a motion compensated structured low-rank (mcSLR) reconstruction, which further improves the robustness of 3D multi-shot EPI by joint modelling of both inter-shot motion and phase variations.

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