Li Feng1, 2, Hersh Chandarana1, Jian Xu3, Kai Tobias Block1, Daniel Sodickson1, Ricardo Otazo1
1Radiology, New York University School of Medicine, New York, United States; 2Sackler Institute of Graduate Biomedical Sciences, New York University School of Medicine, New York, United States; 3Siemens Medical Solutions, New York, United States
Radial k-space sampling is a good candidate for compressed sensing due to the inherent incoherent aliasing artifacts. For dynamic applications, the incoherence can be further increased by using the golden-angle approach, which completely avoids acquisition of replicate radial lines. Moreover, the golden-angle approach allows for reconstruction of arbitrary time points with arbitrary temporal resolution. In this study, we propose a joint non-Cartesian image-reconstruction technique that combines compressed sensing and parallel imaging for accelerating volumetric dynamic MRI with stack-of-stars golden-angle radial trajectories. The performance of this technique is demonstrated for highly accelerated 3D free breathing liver perfusion imaging