Fig. 2

3D water/fat LGE image reconstruction framework. a Superior-inferior (SI) and right-left (RL) motion are estimated from the 2D iNAVs by tracking a rectangular template around the heart. b SI motion is used to bin the 3D dual-echo data in a number of respiratory bins. Images reconstructed at each respiratory position are then used to estimate non-rigid deformation fields. c A motion-corrected high-dimensional patch-based undersampled reconstruction technique (HD-PROST) reconstruction of the dual-echo images is performed, which integrates the motion fields into the reconstruction process while exploiting local, non-local and contrast redundancies of the dual-echo images. d The final dual-echo images are used to generate undersampled motion-compensated water/fat LGE images