Simultaneous acquisition of water-fat concentrations and velocity images using a Phase-contrast Three-point Dixon method
Esteban Denecken1,2,3, Cristobal Arrieta1,3, Hernán Mella1,3, and Sergio Uribe1,3,4
1Biomedical Imaging Center, Pontificia Universidad Católica de Chile, Santiago de Chile, Chile, 2Department of Electrical Engineering, School of Engineering, Pontificia Universidad Católica de Chile, Santiago de Chile, Chile, 3ANID – Millennium Science Initiative Program – Millennium Nucleus for Cardiovascular Magnetic Resonance, Santiago de Chile, Chile, 4Department of Radiology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago de Chile, Chile
Phase-contrast in areas with a significant fat signal is subject to chemical shift artifacts where the fat signal interferes with the neighboring water signal. The purpose of this work is to present a novel three-point Dixon method that preserves the phase information in water and fat images and combines this method with phase-contrast to obtain water-fat concentration and velocity images from a single acquisition. We validate our method using a numerical phantom and MRI acquired in volunteers. Phase-contrast three-point Dixon and standard methods showed equivalent results comparing different ROIs of the PDFF using NRMSE.
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