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Fig. 6 | BioMedical Engineering OnLine

Fig. 6

From: Exploring potential association between flow instability and rupture in patients with matched-pairs of ruptured–unruptured intracranial aneurysms

Fig. 6

Velocity distributions aligning with centerlines at peak systole (a, b) and time-varying velocities at feature points for model B (c, d). Few inflection points and no velocity fluctuations are observed at the ICA siphon. The flow is very likely laminar and stable at ICA but does exhibit apparent fluctuations in the aneurysms. Note that the rupture aneurysm B2 (Points 11, 12) exhibit stronger velocity fluctuations compared with the unruptured aneurysm B1 (Points 7, 8). The peak Reynolds numbers of the upstream parent arteries of aneurysms are calculated to be 718 and 746 for models B1 and B2, respectively

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