Motion-adaptive spatio-temporal regularization for accelerated dynamic MRI

Motion-Adaptive Spatio-Temporal Regularization (MASTeR) for Accelerated Dynamic MRI

Accelerated MRI techniques reduce signal acquisition time by undersampling k-space. A fundamental problem in accelerated MRI is the recovery of quality images from undersampled k-space data. Current state-of-the-art recovery algorithms exploit the spatial and temporal structures in underlying images to improve the reconstruction quality. In recent years, compressed sensing theory has helped for...

Accelerated dynamic MRI using patch regularization for implicit motion compensation.

PURPOSE To introduce a fast algorithm for motion-compensated accelerated dynamic MRI. METHODS An efficient patch smoothness regularization scheme, which implicitly compensates for inter-frame motion, is introduced to recover dynamic MRI data from highly undersampled measurements. The regularization prior is a sum of distances between each rectangular patch in the dataset with other patches in...

Accelerated dynamic MRI Using Patch Regularization for Implicit motion CompEnsation (PRICE)

Purpose: To introduce a fast algorithm for motion-compensated accelerated dynamic MRI. Methods: An efficient patch smoothness regularization scheme, which implicitly compensates for interframe motion, is introduced to recover dynamic MRI data from highly undersampled measurements. The regularization prior is a sum of distances between each rectangular patch in the dataset with other patches in ...

Accelerated Dynamic MRI using Adaptive Signal Models

Spatio - temporal wavelet regularization for parallel MRI reconstruction : application to functional MRI Technical report

a worldwide challenging issue since it has to be achieved while maintaining high image quality [2, 3]. The expected benefits are i.) to limit patient's exposure to the MRI environment either for safety or discomfort reasons, ii.) to improve acquisition robustness against subject's motion artifacts and iii.) to limit geometric distortions. One basic idea to make MRI acquisitions faster (or to im...