Efficient Multiple Acquisitions by SPEED with Shared Spatial Information
Xiang Q, Chang Z
University of British Columbia, University of British Columbia
The fast MRI method of Skipped Phase Encoding and Edge Deghosting (SPEED) is effective to accelerate a single image acquisition, but is not yet applied to multiple acquisitions. Multiple acquisitions such as those in multi-point Dixon are spatially registered. They contain highly similar and redundant spatial information. The redundancy can be reduced by SPEED leading to a higher acceleration factor than that achievable in a single image acquisition. For double-acquisitions, if the 1st acquisition is undersampled by 3/5, the 2nd acquisition can then be undersampled by only 2/5, resulting in a total scan time of nearly a single full acquisition.