Fig. 2

Ideal bifurcated stent grafts in terms of various cross angles and positions. s refers to the stent graft length, t the trunk stent graft length, n the neck diameter, i the iliac diameter, α the cross angle of iliac grafts, l the distance from bifurcation point to the cross point, h the distance from the cross point to the bottom plane, and g the side length of iliac graft