Diagnostic accuracy of noninvasive steatosis biomarkers with magnetic resonance imaging proton density fat fraction as gold standard

Figure 1 Examples of magnetic resonance imaging fat fraction maps for steatosis grade by proton density fat fraction. A: A 32-year-old woman with no steatosis (nonalcoholic fatty liver disease); B: A 34-year-old woman with mild steatosis; C: A 29-year-old woman with moderate steatosis; D: A 33-year-old man with severe steatosis. The average of the proton density fat fraction calculated by the region-of interests of each liver segment is at the bottom of each figure.