Figure 3

Flow velocity. Components of the steady-state fluid flow velocity in the (a) proximal and (b) distal regions of the expanded SMP foam device acquired by MRI. The main flow is from left to right in the z-direction. Each column corresponds to a 2-mm slice as denoted by the numbered boxes overlaying the image of the area occupied by the foam device. The flow becomes faster and less forward-directed inside the foam, then slows and becomes more forward-directed upon exiting the foam.