When using ultra-high field MRI scanners (UHF, B0>= 7T), quantitative imaging is challenging due to B0 and B1+ non-uniformities. Magnetic resonance fingerprinting (MRF) represents a great opportunity for quantitative imaging at UHF as it can estimate these effects at the same time of the parameters of interest. Here, we compare two novel 3D SSFP MRF approaches, one based on a three-dimensional spiral projection acquisition and one using a radial acquisition in vivo at 7.0T. We estimate M0, T1, T2 and B1+ simultaneously at high resolution (1mm isotropic) within 6.5 minutes acquisition time.
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