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Abstract #4969

Correlation between Fat Fraction and MR relaxation times in the vertebral bone marrow at 1.5 T.

Louis Marage1, Jérémy Lasbleiz1, Mathieu Lederlin2, Giulio Gambarota1, and Hervé Saint-Jalmes1

1Univ Rennes, Inserm, LTSI – UMR 1099, Rennes, France, 2CHU Rennes, Rennes, France

The aim of this study was to investigate the in-vivo correlation between Fat Fraction and T1, T2* for both water and fat compartments, in vertebral bone marrow at 1.5T. A fast chemical-shift-encoded 3D multi-gradient-echo sequence and a B1-mapping sequence were acquired at two different flip angles. Fat Fraction, T1 of water, T2* of water, T1 of fat and T2* of fat were obtained using a previously published method. The results of the current study show strong correlation between Fat Fraction and the relaxation times.

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