Liver MRI could benefit from the increased SNR at 7T but suffers from severe flip angle inhomogeneity. In this work, eight-channel parallel transmission is used for flip angle shimming, comparing circularly polarized transmission and phase shimming with a kt-points pulse. Fourier phase-encoded DREAM is used for artifact-free B1+ mapping. With kt-points, the nominal flip angle of 8˚ could be achieved with homogeneous signal over the entire liver, while phase shimming only delivers a flip angle of approximately 4˚ with less homogeneity. Future work is directed towards use of universal slab-selective kt-points pulses to make 7T liver MRI clinically feasible.
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