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.