Andrew L. Wentland1, 2, Oliver Wieben1, Thomas M. Grist2, Kevin M. Johnson1
1Medical Physics, University of Wisconsin School of Medicine & Public Health, Madison, WI, United States; 2Radiology, University of Wisconsin School of Medicine & Public Health, Madison, WI, United States
Numerous procedures have been proposed in the literature to accelerate the acquisition of phase contrast (PC) data. However, these techniques require substantial reconstruction times and can have unpredictable artifacts and/or performance. We have explored sparsifying preprocessing techniques to provide relatively quick reconstruction of 2DPC data with very few projections. Initial results produced magnitude and velocity images of good quality with acceleration factors up to 30. Flow measurements in the processed images had good temporal fidelity and were consistent with measurements from unprocessed images. This algorithm may be useful for reducing the acquisition time of 2DPC data or improving temporal resolution.
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