Compression of the Inferior Vena Cava in Bowel Obstruction

Figure 1

Levels at which IVC was evaluated. The seven levels at which IVC was evaluated are reported on a 3D Volume Rendering reconstruction and the corresponding axial images are shown. APD and LAD were measured by taking into account the rotation of the vena. Levels: (1) 1 cm after the confluence of the iliac veins, (2) 1 cm before the confluence of the renal veins, (3) just before the confluence of the renal veins, (4) just after the confluence of the renal veins, (5) 1 cm after the confluence of the renal veins, (6) just before the confluence of the supra-hepatic veins, and (7) just after the confluence of the supra-hepatic veins.