Estimation of field inhomogeneity map following magnitude-based ambiguity-resolved water-fat separation

• Published in: Magnetic resonance imaging Vol. 97; pp. 102 - 111
• Main Authors: Triay Bagur, Alexandre, McClymont, Darryl, Hutton, Chloe, Borghetto, Andrea, Gyngell, Michael L., Aljabar, Paul, Robson, Matthew D., Brady, Michael, Bulte, Daniel P.
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier Inc 01.04.2023
• Subjects: B0 field; Fat-water swap; Humans; Liver; Magnetic Resonance Imaging - methods; MRI-PDFF; Proton density fat fraction; Protons; Reproducibility of Results; Water; B0 field; Proton density fat fraction; Fat-water swap; MRI-PDFF

Magnitude-based PDFF (Proton Density Fat Fraction) and R2∗ mapping with resolved water-fat ambiguity is extended to calculate field inhomogeneity (field map) using the phase images. The estimation is formulated in matrix form, resolving the field map in a least-squares sense. PDFF and R2∗ from magni...