Figure 3.

Pre- and post-treatment velocity magnitude rendering and vortex corelines (black) with associated velocity streamlines for two representative aneurysms with unsuccessful outcome, as seen in the clinical follow up images. For these unsuccessful clinical cases, persisting vortex corelines and the swirling streamlines around them even after the FD placement (right) suggest that the FD was unable to disrupt the complex flow inside the aneurysm, and hence the aneurysm did not occlude.