Key result
Increasing parent vessel diameter reduces oscillatory shear index and mean wall shear stress on aneurysm sacs.
Why the study?
The role of sac section area and parent vessel diameter on hemodynamic features of blood flow in internal carotid artery aneurysms remains to be comprehensively investigated.
Computational modeling demonstrates that larger parent vessel diameter in ICA aneurysms is associated with decreased oscillatory shear index and mean wall shear stress.
Larger parent vessel diameter may modulate aneurysm hemodynamics; leaves open clinical relevance pending prospective human studies.
In this study, the role of sac section area and parent vessel diameter on the hemodynamic feature of the blood flow in selected internal carotid artery (ICA) aneurysms is comprehensively investigated. The changes of wall shear stress, pressure, and oscillatory shear index (OSI) of blood stream on the vessel for various aneurysms with coiling treatment. To attain hemodynamic factors, computational technique is used for the modeling of non-Newtonian transient blood flow inside the three different ICA aneurysms. Three different saccular models with various Parent vessel mean Diameter is investigated in this study. The achieved outcomes show that increasing the diameter of the parent vessel directly decreases the OSI value on the sac surface. In addition, the mean wall shear stress decreases with the increase of the parent vessel diameter.
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Fattahi et al. (2023) studied Internal carotid artery aneurysms (n=3). Parent vessel mean diameter vs. Varying parent vessel diameters was evaluated on Hemodynamic features including oscillatory shear index (OSI) and wall shear stress (WSS). Increasing the diameter of the parent vessel directly decreases the oscillatory shear index and mean wall shear stress on the aneurysm sac surface.
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