Why the study?
Does the presence of the superior thyroid artery influence flow patterns and wall shear stress in carotid bifurcation models?
Does the presence of the superior thyroid artery influence flow patterns and wall shear stress in carotid bifurcation models?
The superior thyroid artery has minimal impact on carotid sinus flow characteristics in numerical simulations, though it affects the common-external side branch.
Models omitting the superior thyroid artery remain valid for carotid sinus analysis; extends prior simulations to quantify common-external branch effects.
The superior thyroid artery was ignored in previous fluid dynamics studies of carotid bifurcations. However, it is not clear to what extent the flow patterns within the carotid might be influenced by the presence of this outflow tract in reality. In this study, quantitative effects of the superior thyroid artery upon the flow patterns and wall shear stress in the carotid bifurcation were investigated in detail by a numerical simulation method. Comparisons of the maximum reversed flow velocities, flow patterns and wall shear stress were made between models with and without the superior thyroid artery. Results demonstrate that this small artery has only a marginal effect on the overall flow characteristics within the carotid sinus. However, it does have significant effects on flow patterns in the common-external side branch. An alternative approach is proposed to compensate for the absence of this small artery in numerical calculations.
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Zhao et al. (1999) studied this question.
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