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Abstract #0899

Human Breast Lipid Composition Determination by in Vivo Proton MRS at 7T

Ivan Dimitrov1, Deborah Douglas2, Jimin Ren2, Andrew G. Webb3, A Dean Sherry2, Craig R. Malloy2

1Philips Medical Systems, Cleveland, OH, United States; 2Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, TX, United States; 3Radiology, Leiden University Medical Center, Leiden, Netherlands

The role of diet and fat consumption in the pathogenesis of breast cancer is an important subject. We report on the non-invasive determination of lipid composition in human breast by 1H-MRS at 7T. Two respiratory-triggered TE-averaged STEAMs were performed in healthy volunteers where the second acquisition had all gradients inverted. T1 and T2 were also measured. Ten lipid peaks were typically resolved. The average lipid composition was 30.5% saturated, 48.4% mono-unsaturated, and 21.1% di-unsaturated. In conclusion, we have shown that a chemical analysis of lipids in breast tissue can be determined quite simply and non-invasively by proton MRS at 7T.