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Abstract #3150

T1 relaxation in fat and its dependence on fat content

Véronique Fortier1,2 and Ives R. Levesque1,2,3
1Medical Physics Unit, McGill University, Montreal, QC, Canada, 2Biomedical Engineering, McGill University, Montreal, QC, Canada, 3Research Institute of the McGill University Health Centre, Montreal, QC, Canada

The T1 relaxation of triglyceride molecules is of interest for fat-water separation and fat quantification. A better understanding of the T1 of fat could benefit modeling techniques for applications in MR-oximetry and fatty liver disease. In this work, the T1 relaxation and its dependence on fat content was evaluated for five spectral peaks present in triglyceride molecules, over a range of fat fractions in a homogeneous fat-water mixture. The T1 of water in mixture was also studied. A model is proposed to describe the two-pool relaxation in a fat-water mixture as a function of the fraction of each pool.

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