Diagnostic value of gadobenate dimeglumine-enhanced hepatocyte-phase magnetic resonance imaging in evaluating hepatic fibrosis and hepatitis

Figure 3 Schematic diagram of grading of hepatitis. G1: Minimal activity with mild portal inflammation but scant piecemeal necrosis; G2: Mild activity with mild portal inflammation, piecemeal necrosis, and scant lobular spotty necrosis; G3: Moderate activity with moderate portal inflammation and lobular spotty necrosis; G4: Severe activity with marked portal inflammation, brisk piecemeal necrosis, and areas of confluent necrosis resulting in bridging.