Multicenter analysis on the correlation between the anatomical characteristics of hepatic veins and hepatic venous wedge pressure

Figure 2 Anatomical images of balloon occlusion hepatic venography. A: Balloon occlusion of the hepatic right vein (white short arrow) demonstrating visualization of the hepatic middle vein through a communicating branch (white long arrow); B: Balloon occlusion of the right hepatic vein (white short arrow) showing visualization of the accessory hepatic vein through a communicating branch (white long arrow); C: Balloon occlusion of the right hepatic vein (white short arrow) showing visualization of the portal vein (white long arrow); D: Balloon occlusion of the right hepatic vein (white short arrow) revealing no communicating branch or portal vein.