Fig. 6

Visualized results of numerical simulation (Streamline, Velocity, WSS and Pressure) of Case 3. E, a single-Enterprise stent model; E2, double-Enterprise stent model; L, a single-LVIS stent model; L2, double-LVIS stent model; P, a single-Pipeline device model. P2 was really better at reducing velocity and WSS than L2. Nevertheless, L2 still demonstrate an obvious flow diversion effect than the conventional E and P. The vortex shape seen in Control persists with the gradually lower intensity after stenting similar to the WSS and velocity changes. The low WSS region of the parent vessel increased compared to the Control. A single vortex was observed in the Control model and the vortex showed minimal changes after a single stent or E2 placement. After L2 and P2 stenting, no obvious vortex was observed ultimately. Note: WSS wall shear stress