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Quantification of liver fat accumulation using fat‐fraction MR imaging. Fat‐fraction maps in (A) a healthy subject (steatosis grade 0) and patients with biopsy confirmed (B) steatosis grade 1, (C) steatosis grade 2, and (D) steatosis grade 3. Measurements displayed adjacent to circular regions of interest indicate the estimated fat fractions (%). The results of these noninvasive measurements correlate well with the steatosis degree as determined by biopsy.
