PROBLEM TO BE SOLVED: To provide a blood dynamic characteristic measuring apparatus for measuring viscosity coefficient distribution and shearing stress distribution.SOLUTION: This blood dynamic characteristic measuring apparatus includes: a means 4 for percutaneously entering wave motion such as an ultrasonic wave toward a blood flow in a blood vessel, receiving a scattered echo from blood cell components contained in blood in the blood vessel and thereafter measuring a blood flow velocity distribution by ultrasonic Doppler measurement means 5 and 6 for finding the viscosity coefficient distribution of the blood and/or a viscosity coefficient distribution average value of the blood by a two-dimensional or three-dimensional Navier-Stokes equations on the basis of the blood flow velocity distribution a shear rate distribution calculation means 7 for calculating a shear rate distribution from the measured blood flow velocity distribution and a means 9 for finding the shear stress distribution in the blood on the basis of the calculated shear rate distribution and the viscosity coefficient distribution of the blood or the viscosity coefficient distribution average value of the blood.COPYRIGHT: (C)2010,JPO&INPIT【課題】粘性率分布およびずり応力分布を測定する血液力学特性測定装置を提供すること。【解決手段】経皮的に血管内の血流に向けて超音波等の波動を入射させ、その血管内の血液中に含まれる血球成分からの散乱エコーを受信した後、超音波ドプラ計測によって血流速度分布を計測する手段4と、血流速度分布に基づいて、2次元または3次元のナビエ-ストークス方程式より、血液の粘性率分布及び/または血液の粘性率分布平均値を求める手段5,6と、計測された血流速度分布からずり速度分布を算出するずり速度分布算手段7と、算出されたずり速度分布と血液の粘性率分布または血液の粘性率分布平均値とに基づいて血液内のずり応力分布を求める手段9とからなることを特徴とする血液力学特性測定装置である。【選択図】図1
