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Abstract #4735

Cross-validation of Multi-parametric MRI in Characterizing Steatosis, Inflammation, and Fibrosis in Nonalcoholic Steatohepatitis (NASH) and Alcohol Hepatitis (AH) Mouse Models

Ziying Yin1, Rosa Martin Mateos2, Jiahui Li1, Vikas K. Verma2, Kevin J. Glaser1, Amy S. Mauer2, Harmeet Malhi2, Vijay Shah2, Richard L Ehman1, and Meng Yin1

1Radiology, Mayo clinic, Rochester, MN, United States, 2Gastroenterology and Hepatology, Mayo clinic, Rochester, MN, United States

In this preliminary study, we cross-validated the usefulness of multi-parametric MRI (fat fraction, liver stiffness, and damping ratio) in assessing the disease development and treatment response in both NASH and AH mouse models. Fat fraction has excellent agreement with the steatosis changes in both progressive and regressive AH and NASH models. In AH models, hepatic inflammation indicators have shown promising trends that well agreed each other in ALT and damping ratio. For the NASH model, both liver stiffness and damping ratio increased progressively in the fast-food-diet group, and the changes of stiffness was consistent with the end-point histology of fibrosis.

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