連成波動理論に基づく周期的な圧力変動を受ける弾性管の弾性率推定に関する研究

抄録

The prevention of an arteriosclerosis, which is a major cause of death in the world has social significance. In previous studies, blood vessel elasticity was estimated by using parameters of blood vessel model. However, the effect of wave propagation on the estimation was ignored. It is not clear how these features affect the estimation of blood vessel elasticity in clinic. In this study, the coupled model of blood vessel and blood flow based on the coupled wave theory was proposed on the assumption that the viscosity is more strongly influenced by blood flow than by blood vessels. Identifying the model parameters of elastic pipes subjected to cyclic pressure fluctuations by using measured pressure and displacement data, we concluded that the coupled model may be applicable for estimating the vessel stiffness in clinical practice.