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Abstract #1014

Free-breathing Abdominal Fat Spectroscopy with Multi-Echo Rosette k-space Sampling

Suma Anand1, Adam Michael Bush2, Christopher Michael Sandino3, Shreyas Vasanawala2, and Michael Lustig1
1Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, CA, United States, 2Radiology, Stanford University, Palo Alto, CA, United States, 3Electrical Engineering, Stanford University, Palo Alto, CA, United States

Obesity is a major cause of preventable morbidity and mortality in the US. A growing body of work suggests that triglyceride composition and its spatial distribution play a central role in this epidemic, necessitating the need for better non-invasive fat imaging. We propose a motion-robust acquisition scheme that combines the spatial resolution of MRI and the spectral resolution of MR spectroscopy using 2D multi-echo rosette k-space sampling. We validate the method with an oil phantom and demonstrate its motion robustness with a free-breathing in vivo acquisition.

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