Key result
Image-based computational fluid dynamics using a model with integrated valves predicted more complex intraventricular flow matching physiological patterns better than an orifice-type model.
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Using integrated valves with rigid leaflets in computational fluid dynamics models of the left ventricle yields more physiologically accurate intraventricular flow patterns than simple orifice-type models.
The image-based computational fluid dynamics (IB-CFD) technique, as the combination of medical images and the CFD method, is utilized in this research to analyze the left ventricle (LV) hemodynamics. The research primarily aims to propose a semi-automated technique utilizing some freely available and commercial software packages in order to simulate the LV hemodynamics using the IB-CFD technique. In this research, moreover, two different physiological time-resolved 2D models of a patient-specific LV with two different types of aortic and mitral valves, including the orifice-type valves and integrated with rigid leaflets, are adopted to visualize the process of developing intraventricular vortex formation and propagation. The blood flow pattern over the whole cardiac cycle of two models is also compared to investigate the effect of utilizing different valve types in the process of the intraventricular vortex formation. Numerical findings indicate that the model with integrated valves can predict more complex intraventricular flow that can match better the physiological flow pattern in comparison to the orifice-type model.
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Doost et al. (2016) studied Left ventricle hemodynamics (n=1). Image-based computational fluid dynamics (IB-CFD) with integrated rigid leaflets vs. Orifice-type valves model was evaluated on Intraventricular flow pattern and vortex formation. Image-based computational fluid dynamics using a model with integrated valves predicted more complex intraventricular flow matching physiological patterns better than an orifice-type model.
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