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血流的流体力学原理在未叙述血流对MR成象的影响之前,应先复习一下流体力学的基本规律。对于绝对不可压缩且没有粘滞性(液体内摩擦力)的液体叫做理想液体。理想液体在管腔内流动是遵循流体力学规律的。在管内流动的液体有两种流动方式:
The principle of hydrodynamics of blood flow Before describing the effect of blood flow on MR imaging, you should review the basic laws of fluid mechanics. For absolutely incompressible and non-viscous liquid (liquid friction) of the liquid is called the ideal liquid. Ideal liquid flow in the lumen follow the laws of fluid mechanics. There are two types of fluid flow in the tube: