Bjorno L, Pettersson H
Acta Radiol Diagn (Stockh). 1977 Jan;18(1):1-16. doi: 10.1177/028418517701800101.
An experimental and a theoretical investigation has been performed on some essential factors influencing the volumetric flow rate through and the static pressure in a catheterized, rigid-walled vessel model. These factors comprise: (a) the length of the catheter introduced into the vessel, (b) the catheter diameter, (c) the vessel diameter, (d) the dynamic viscosity of the liquid and (e) the mode of catheterization. Theoretical expressions for pressure and volumetric flow rates have been observed for laminar and turbulent flow in even, concentric annuli, and the influence of eccentricity is discussed. A good agreement found between the experimentally and the theoretically obtained values of static pressure and the volumetric flow rate in catheterized vessels elucidates a series of features of interest for catheterization praxis and it emphasizes the applicability of relatively simple fluid mechanical equations in flow conditions of medical interest.
针对影响通过插入刚性壁血管模型的导管的体积流量和静压的一些基本因素，进行了一项实验研究和理论研究。这些因素包括：(a) 插入血管的导管长度，(b) 导管直径，(c) 血管直径，(d) 液体的动态粘度，以及 (e) 导管插入方式。已观察到均匀、同心环形空间中层流和湍流的压力和体积流量的理论表达式，并讨论了偏心度的影响。在插入导管的血管中，实验获得的静压值和体积流量值与理论获得的值之间发现了良好的一致性，这阐明了导管插入实践中一系列有趣的特征，并强调了相对简单的流体力学方程在医学相关流动条件下的适用性。
