Figure 10.

Comparison of NUFFT, GRASP, L+S and GRASP-Pro reconstruction for 4D dynamic MRI (one representative slice) for DCE dataset 1. For each slice of the stack-of-stars dataset, image reconstruction was performed with only 3 spokes in each temporal frame, leading to a temporal resolution of 0.47 seconds/3D volume. NUFFT reconstruction produced strong streaking artifacts. Although GRASP and L+S could remove some artifacts, the reconstruction quality remains low. In comparison, GRASP-Pro was able to reconstruct clean and sharp images with good delineation of image structures in different contrast-enhanced phases.