Simultaneous acquisition of water-fat concentrations and velocity images using a Phase-contrast T2*-IDEAL 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 method that combines phase-contrast with T2*-IDEAL water-fat separation to obtain water-fat concentrations and velocity images from a single acquisition. We validate our method using a numerical phantom with different combinations of water-fat concentrations, velocity, and noise, and MRI of a 2D axial section of the neck acquired in volunteers. PDFF comparisons showed a significant agreement between phase-contrast T2*-IDEAL and standard methods.
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