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Abstract #4458

Three-dimensional, fast parameter mapping at 7.0T with SSFP MR Fingerprinting: comparison of radial and spiral projections k-space trajectories

Guido Buonincontri1, Pedro A Gómez2, Matteo Cencini1,3, Mauro Costagli1, Graziella Donatelli1, Rolf F Schulte4, and Michela Tosetti1

1Laboratory of Medical Physics and Magnetic Resonance - IRCCS Stella Maris Foundation and IMAGO7 Foundation, Pisa, Italy, 22Department of Computer Science, Technische Universitat Munchen, Germany;, Munich, Germany, 3University of Pisa, Pisa, Italy, 4GE Healthcare, Munich, Germany

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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