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. 2024 Apr 18;14(1):8984.
doi: 10.1038/s41598-024-59242-w.

Hemodynamic study of the ICA aneurysm evolution to attain the cerebral aneurysm rupture risk

Huaying Huo  1 , Yigang Chang  2
Affiliations

Hemodynamic study of the ICA aneurysm evolution to attain the cerebral aneurysm rupture risk

Huaying Huo et al. Sci Rep. .

Abstract

The influence of the aneurysm evolution on the hemodynamic characteristic of the blood flow inside the sac region is comprehensively investigated. By using the computational method, the blood flow through the vessel and aneurysm of the sac region is examined to find the role of aneurysm evolution on the wall shear stress, pressure, and risk of aneurysm rupture. Three different models of ICA aneurysms are chosen for the investigation of the aneurysm evolution at risk of rupture. Obtained data shows that the evolution of the aneurysm decreases the wall shear stress and pressure on the sac surface while an oscillatory index of blood increases on the aneurysm wall.

Keywords: Aneurysm evolutions; Bloodstream; Micro cerebral; Non-newtonian flow; Wall shear stress.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Figure 1
Figure 1
ICA aneurysm geometry of 3 different cases (Four different aneurysm volume).
Figure 2
Figure 2
Applied profile at inlet (mass flow) and outlets (pressure outlet).
Figure 3
Figure 3
Grid generation for 3 different ICA cases.
Figure 4
Figure 4
WSS contours (Peak systolic) in different sac volume.
Figure 5
Figure 5
Minimum wall shear stress at peak systolic.
Figure 6
Figure 6
Mean wall shear stress at peak systolic.
Figure 7
Figure 7
Wall pressure contours (Peak systolic) in different sac volume.
Figure 8
Figure 8
Mean wall pressure at peak systolic.
Figure 9
Figure 9
OSI contours (Early diastolic) in different sac volume.
Figure 10
Figure 10
Mean OSI at early diastolic.
Figure 11
Figure 11
Streamlines (velocity at peak systolic) in different sac volume.
Figure 12
Figure 12
Mean sac velocity at peak systolic.
Figure 13
Figure 13
Iso-Surface (velocity at peak systolic) in different sac volume.
See this image and copyright information in PMC

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