Figure 8d. Coil embolization of the dead space between inner and outer stents. (a) Drawing illustrates the location of coils used for dead space embolization. (b) Anteroposterior image demonstrates the constrained stent (arrow) within the preexisting TIPS stent (arrowhead). (c) Anteroposterior image shows large coils (arrow) placed between the inner and outer stents. (d) TIPS venogram obtained immediately after coil deployment demonstrates flow throughout the original TIPS lumen. Thrombus has not yet formed within the dead space.