Cavalcanti S, Carota L
Department of Electronics, Computer Science & Systems, University of Bologna, Italy.
Med Biol Eng Comput. 1995 May;33(3):247-51. doi: 10.1007/BF02510495.
The influence of an arterial stenosis on the pattern of blood velocity spatial distribution is investigated. The blood velocity field in a human femoral artery in a stenotic state is computed by means of numerical simulation. Four distributions of velocity profiles along the vessel are shown, corresponding to four different instants of the cardiac cycle. The shape of the spatial pattern of the velocity profile is strongly perturbed by the stenosis: disturbances are so clear that an easy, precise localisation of the stenotic site is always possible, whatever instant of the cardiac cycle is considered. The reported results prove that a three-dimensional view of the velocity profile distribution along the vessel best emphasises the relevant haemodynamic information from a diagnostic point of view.
研究了动脉狭窄对血流速度空间分布模式的影响。通过数值模拟计算了处于狭窄状态的人体股动脉中的血流速度场。给出了沿血管的四个速度剖面分布，对应于心动周期的四个不同时刻。狭窄严重扰乱了速度剖面空间模式的形状：干扰非常明显，以至于无论考虑心动周期的哪个时刻，总是能够轻松、精确地定位狭窄部位。所报告的结果证明，从诊断角度来看，沿血管的速度剖面分布的三维视图最能突出相关的血液动力学信息。
