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Abstract #2363

Repeatability and reproducibility of MRF-based Myelin Water Fraction maps of healthy human brains

Marta Lancione1, Matteo Cencini1, Guido Buonincontri1, Jan Kurzawski2, Joshua D Kaggie3, Tomasz Matys3, Ferdia A Gallagher3, Graziella Donatelli4,5, Paolo Cecchi4,5, Mirco Cosottini6, Nicola Martini7, Francesca Frijia7, Domenico Montanaro1, Pedro A Gómez4, Rolf F Schulte8, Alessandra Retico9, Laura Biagi1, and Michela Tosetti1
1IRCCS Stella Maris, Pisa, Italy, 2New York University, New York, NY, United States, 3University of Cambridge, Cambridge, United Kingdom, 4IMAGO7 Foundation, Pisa, Italy, 5Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy, 6University of Pisa, Pisa, Italy, 7Fondazione Toscana Gabriele Monasterio, Pisa, Italy, 8GE Healthcare, Munich, Germany, 9Istituto Nazionale di Fisica Nucleare, Pisa, Italy

Synopsis

Keywords: MR Fingerprinting/Synthetic MR, MR Fingerprinting, Myelin, ReproducibilityMyelin Water Fraction (MWF) can measure White Matter (WM) myelination and integrity and can be quantified using Magnetic Resonance Fingerprinting (MRF) which allows short scan time. In this work, we assessed the repeatability and the reproducibility of MWF using 3D SSFP MRF in a traveling head study performed on healthy volunteers scanned at five different scanners from the same vendor. We computed coefficients-of-variation to estimate voxelwise variability in WM and GLM analysis to measure biases. We reported a variability of ∼3% for repeated scans at the same site and ∼5% for different sites, with an average bias of 5%.

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Keywords