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Abstract #1873

The Effect of Hepatic Fat on T2 of water signal in single voxel multi-echo MRS and fat-suppressed radial TSE T2 mapping.

Diana Bencikova1,2, Marcus Raudner1, Sarah Poetter-Lang1, Nina Bastati1, Ahmed Ba-Ssalamah1, Siegfried Trattnig1,2, and Martin Krššák2,3
1Department of Radiology, Medical University Vienna, Vienna, Austria, 2Christian Doppler Laboratory for Clinical Molecular Imaging, MOLIMA, Vienna, Austria, 3Division of Endocrinology and Metabolism, Department of Medicine III, Medical University of Vienna, Vienna, Austria

MRI-based T2 mapping was suggested for the grading of hepatic parenchyma inflammation. Studies using multi-echo MRS suggest the effect of hepatic fat accumulation on T2 values of the water signal. Here, we analyzed the effect of hepatic fat fraction on water T2s in phantoms and patients in vivo with MRS and T2 mapping based on fast radial turbo-spin-echo acquisition with fat saturation. While there was an effect in phantoms of low FF, in the population of patients with FF up to 15%, no significant influence could be observed.

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