Particle Based Blood Pressure Simulation in the Aorta with the Model Generated from CT Images

We have performed the blood pressure simulation in the aorta and the left ventricle with the model generated from CT (Computerized Tomography) data. There were some works related to the aorta; however, some simulations performed the aortic valve behavior with artificial models, and others investigated the blood flow only in the aorta with models generated from MRI (Magnetic Resonance Imaging) data. Then, we demonstrated the simulation of the blood flow and the pressure change in the aorta and the left ventricle with a model generated from CT data. In the simulation, as the blood flowed into the left ventricle through the mitral valve, the pressure in the left ventricle increased, and the aortic valve finally opened by the high pressure in the left ventricle. As the result of the simulation, we confirmed that the pressure change in the left ventricle was similar to a real data; however, the blood pressure in the aorta was lower than the real data. Therefore, in this paper, we demonstrate that the blood pressure change in the aorta becomes similar to the real data by setting some initial pressure in the aorta and forming a closed region of the aorta.

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