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

Figure 20 Hemobilia secondary to percutaneous liver biopsy in a 55-year-old man. A: DWI at b = 50 s/mm² shows a hypointense hematoma in the gallbladder (asterisk); B: On DWI at b = 800 s/mm², signal intensity of the hematoma changes to high signal (asterisk). C: On the ADC map, the hematoma in the gallbladder appears as low signal intensity (asterisk), which is associated with intact RBC membranes (i.e., hyperacute, acute, and early subacute hematomas). DWI: Diffusion-weighted magnetic resonance imaging; ADC: Apparent diffusion coefficient; RBC: Red blood cell.