We aimed to compare mono-exponential bi-exponential and stretched-exponential diffusion-weighted imaging(DWI) model in characterizing nonalcoholic liver disease (NAFLD) by providing multiple quantitative parameters. The diagnosis performance for early detection nonalcoholic steatohepatitis (NASH) was compared using characteristic operating curve analysis. Stretched-exponential DWI performed as well as bi-exponential DWI and better than mono-exponential DWI in the noninvasive characterization of NAFLD severity.
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