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Abstract #4853

Fast Time-Resolved 3D Single Point Imaging with Compressed Sensing

James A. Rioux1,2, Steven D. Beyea2,3, Chris V. Bowen2,3

1Department of Physics, Dalhousie University, Halifax, Nova Scotia, Canada; 2National Research Council - Institute for Biodiagnostics (Atlantic), Halifax, Nova Scotia, Canada; 3Departments of Physics, Radiology and Biomedical Engineering, Dalhousie University, Halifax, Nova Scotia, Canada

Single Point Imaging sequences are well suited to acceleration with Compressed Sensing (CS), allowing the lengthy acquisition times associated with these sequences to be shortened considerably. We demonstrate such acceleration with 128x128x16 3D TurboSPI images, which also contain time course information for quantification of relaxation parameters. Acceleration factors of 6-10 are readily achievable, with further improvements possible at larger matrix sizes. CS reconstruction retains overall image quality and preserves time course information to within a few percent, allowing SPI to be more readily used for in vivo imaging, or studying dynamic systems.