Our purpose is to develop a method to estimate circulatory parameters, such as distensibility of arterial wall, from waveforms of non-invasively measured pulsatile blood flow. To elucidate the relationship between the distensibility of arteries and the wave forms of pulsatile blood flow, we have been performing fully coupled fluid-structure interaction analysis of pulsatile blood flow in a very simple model using the ADINA finite element system[l]. In a previous paper, we modeled arteries and ventricular ejections with a straight elastic tube and pressure pulse wave, and confirmed the formation of dicrotic waveform[2]. In this study, for more realistic simulation, we modeled ventricular ejections by velocity flow shown in Fig. 1.
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