To reduce scanning time and/or improve spatial/temporal resolution in some
MRI applications, parallel MRI (pMRI) acquisition techniques with multiple
coils acquisition have emerged since the early 1990s as powerful 3D imaging
methods that allow faster acquisition of reduced Field of View (FOV) images. In
these techniques, the full FOV image has to be reconstructed from the resulting
acquired undersampled k-space data. To this end, several reconstruction
techniques have been proposed such as the widely-used SENSE method.