Quantification of changes in lung water using MRI may provide clinical value in early diagnosis of heart failure. In this study, we demonstrate the ability of our 3D free-breathing spiral ultrashort-TE sequence to quantify and capture changes in lung water using a high-performance 0.55T MRI system. A phantom containing mixtures of water and deuterium oxide at varying concentrations was used to validate water density quantification. Our proposed approach captured the gravity-induced redistribution of lung water, achieved by imaging subjects in the supine and prone positions.
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