1306 3次元非定常血流の超音波計測融合シミュレーションに関する数値実験(2)(OS13-2 計測とシミュレーションの融合,OS13 計測とシミュレーションの融合,オーガナイズドセッション)

概要

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Circulatory diseases have relations to the hemodynamics, and therefore, detailed and accurate information of blood flow field is essential for advanced diagnosis or treatment of them. Hence, we have developed Ultrasonic-Measurement-Integrated (UMI) simulation. This methodology adds feedback signals derived from the differences between measured and computed Doppler velocities to the numerical simulation, and makes the computational result converge to the real blood flow field as time progresses. In this study, we performed the numerical experiment of the UMI simulation to reproduce the standard numerical solution of the three-dimensional unsteady flow or the model of a real blood flow. The UMI simulations effectively reduced the error due to the boundary conditions in and after the feedback domain, and reproduced the blood flow field in the aneurysm, especially in the case of using two ultrasound proves. Consequently, we confirmed the effectiveness of the UMI simulation in a real blood flow condition.
2006-10-28