Fa-Hsuan Lin1,2, Thomas Witzel2, Aapo Nummenmaa2,3, Panu Vesanen3, Risto J. Ilmoniemi3, John W. Belliveau2
1National Taiwan University, Taipei, Taiwan; 2Martinos Center, Massachusetts General Hospital, Charlestown, MA, USA; 3Department of Biomedical Engineering & Computational Science (BECS), Aalto University, Espoo, Finland
We propose the multi-dimensional encoded (MDE) MRI using over-complete spatial bases to achieve efficient encoding and image reconstructions. Different from traditional MRI using n-dimensional k-space to encode an n-dimensional object, MDE suggests encoding an n-dimensional object by a p-dimensional encoding space (p > n) using spatial bases generated by the combination of different spatial encoding magnetic fields and RF sensitivity profiles. Preliminary results using simultaneous multipolar SEMs in the PatLoc system and the O-space imaging with different center placements (CPs) indicates the potential of further optimizing MRI bases for a higher spatiotemporal resolution.