Motion-compensated compressed-sensing reconstruction for dynamic MRI

S Mun, JE Fowler - 2013 IEEE International Conference on …, 2013 - ieeexplore.ieee.org
2013 IEEE International Conference on Image Processing, 2013ieeexplore.ieee.org
Compressed-sensing reconstruction using motion estimation and compensation for dynamic
MRI data is proposed. Reconstruction is driven from a residual in the k-space domain
between the current-frame measurements and a corresponding motion-compensated
prediction. Due to the periodicity commonly exhibited in dynamic MRI, a telescopic motion
search through the entire group of pictures is used to determine the best match for the block-
based motion estimation. Experimental comparisons demonstrate improved performance as …
Compressed-sensing reconstruction using motion estimation and compensation for dynamic MRI data is proposed. Reconstruction is driven from a residual in the k-space domain between the current-frame measurements and a corresponding motion-compensated prediction. Due to the periodicity commonly exhibited in dynamic MRI, a telescopic motion search through the entire group of pictures is used to determine the best match for the block-based motion estimation. Experimental comparisons demonstrate improved performance as compared to existing dynamic-MRI reconstructions, both those with and without motion compensation.
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