Identification of Pulse Wave Propagation Characteristics in Viscoelastic Tube(Fluids Engineering)

Some arterial diseases, such as a peripheral arterial disease can be detected by blood pressures and pulse waves using non-invasive blood pressure monitoring devices. On the other hand, some diseases, like an abdominal aortic aneurysm, are hard to find in the same way though they also make influence to pulse waves. The aim of our research is to propose new method to detect such diseases. This paper shows two identification methods of pulse wave propagation characteristics in arteries under the assumption that arteries are viscoelastic tube. One method identifies material parameters, stiffness and density of a viscoelastic tube by measuring pressures at three points and flow volume at one point. The other method identifies them by measuring pressures at four points. Two proposed methods were verified by experiment using a silicon tube.