Key result
The fluid-structure interaction model predicted an 8% smaller area of low time-averaged wall shear stress (<0.4 Pa) compared to the rigid-wall model, indicating that wall compliance quantitatively affects wall shear stress predictions in stented carotid arteries.
Why the study?
Fluid-structure interaction studies on patient-specific post-stent carotid models were lacking to understand the effect of wall compliance on hemodynamic quantities.
Does a fluid-structure interaction (FSI) model compared to a rigid-wall model alter the predicted hemodynamic parameters in a patient-specific post-stent carotid artery?
Population
Patient-specific post-stent carotid bifurcation model
Comparison
Fluid-structure interaction simulation vs rigid-wall model
Design
Computational simulation study
Authors
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First post-stent patient-specific carotid FSI model; leaves open clinical relevance of wall compliance on hemodynamics.
Does a fluid-structure interaction (FSI) model compared to a rigid-wall model alter the predicted hemodynamic parameters in a patient-specific post-stent carotid artery?
Accounting for wall compliance in patient-specific post-stent carotid models significantly alters quantitative wall shear stress predictions, suggesting rigid-wall models may overestimate restenosis risk areas.
Johari et al. (2022) studied Carotid stenosis (n=1). Fluid-structure interaction (FSI) modeling vs. Rigid-wall modeling was evaluated on Percentage area of low time-averaged wall shear stress (< 0.4 Pa). The fluid-structure interaction model predicted an 8% smaller area of low time-averaged wall shear stress (<0.4 Pa) compared to the rigid-wall model, indicating that wall compliance quantitatively affects wall shear stress predictions in stented carotid arteries.
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