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Fig. 1 —73-year-old man with fatty liver. Three representative
sonograms of liver show interobserver and intraobserver variability. At first
reading, observer A graded liver as moderately fatty, observer B graded liver
as mildly fatty, and observer C graded liver as normal. At second reading,
observers A and C were consistent in grading liver moderately fatty and
normal, respectively, whereas observer B, unlike in first evaluation, assessed
liver as normal.