Abstract #0480

Multi-Dimensional Encoded (MDE) Magnetic Resonance Imaging

Fa-Hsuan Lin^1,2, Thomas Witzel², Aapo Nummenmaa^2,3, 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.