Contrast enhanced computed tomography and reconstruction of hepatic vascular system for transjugular intrahepatic portal systemic shunt puncture path planning

Figure 1 Axial distance between puncture point of origin (o) and target point (t) of the portal vein. Point of origin (o) is located about 1.5 cm (white line) from the confluence of the right hepatic vein to inferior vena cava, and the red arrow between the two points is the anterior-posterior distance of the puncture.