Intravoxel incoherent motion diffusion-weighted magnetic resonance imaging for predicting histological grade of hepatocellular carcinoma: Comparison with conventional diffusion-weighted imaging

Figure 2 Magnetic resonance images of a 47-year-old man with a 10-cm surgically verified hepatocellular carcinoma of with an Edmondson-Steiner grade 2. A: T2-weighted image; B: Diffusion-weighted image with a b value of 10 s/mm²; C-F: Parametric maps (ADC, D, D*, and f, respectively) calculated from the IVIM diffusion-weighted imaging data. The tumor (white arrow) demonstrates a slightly high signal intensity on the T2-weighted image and a high signal intensity on the DWI image. The values of the ADC, D, D*, and f for the ROIs of the HCC were 1.310 × 10^-3 mm²/s, 0.885 × 10^-3 mm²/s, 27.8 × 10^-3 mm²/s, and 0.450, respectively, which indicated an Edmondson-Steiner grade 2 HCC. HCC: Hepatocellular carcinoma; IVIM: Intravoxel incoherent motion; DWI: Diffusion-weighted imaging.