Fig. 3

Visualizations of velocity vectors (Block a), streamlines (Block b), velocity components perpendicular to neck orifices (Block c), and ISO-velocity surfaces (Block d) of non-stented cases (Column 1 of each block), initial FD placements (Column 2 of each block), and optimal FD placements (Column 3 of each block), respectively; S model, C model and R model are in row (i), row (ii), and row (iii) of each block, respectively