Diffusion-weighted imaging of biliopancreatic disorders: Correlation with conventional magnetic resonance imaging

Figure 15 Extrahepatic cholangiocarcinoma in a 62-year-old man. A: Coronal T2-weighted rapid acquisition relaxation enhancement image shows a mass (arrow) in the distal common bile duct and marked upstream bile duct dilatation; B: DWI at b = 800 s/mm² shows a mass with high signal intensity (arrow), but the signal intensity of bile is also increased; C: DWI at b = 1000 s/mm² shows a mass with high signal intensity (arrow). Note that the signal intensity of bile in the bile duct is significantly reduced. DWI: Diffusion-weighted magnetic resonance imaging.