Vortex Analysis of Intra-Aneurismal Flow in Cerebral Aneurysms

Figure 5

Plots illustrating the impact on extracted vortex cores (i.e., the black surface in each plot) due to changes of isosurface threshold values. From left to right: mean/4, mean/2, mean, mean + (std/2), and mean + std. All images were from TA case 1, [normalized] with a voxel resolution of 0.2 mm. At increased threshold values (≥mean + std/2) a reduction of identified vortex core structures occurred, sometimes not identifying any areas of vortex. All images came from the [normalized] -criterion methodology, case TA1 (see Figure 2), and cardiac cycle-averaged vorticity data.