Numerical Simulation Of Chinese Medical Pulse Conditions And Features Extraction Based On COMSOL

The pulse condition is a biological information transfer phenomenon and signal from the external about the circulatory system,including frequency of pulse, amplitude of fluctuations and curvature of arteries.These are associated with the outlines of blood vessels. In this paper,we extract the outlines and the bone lines of blood vessels with the pressure data of skin surface.Firstly, we use COMSOL Multiphysics simulation software to simulate the flow of blood in radial artery and the expansion and retraction of radial artery, Then extract-ing data of simulation skin surface with COMSOL and MATLAB.Based on which,we get the binary images containing outlines and bone lines information of vessels,And comparing the outlines and the bone lines of these images with the actual situation.Chapter 1 is the introduction, including the background and statemen-t of this research, the simple introduction of simulation software COMSOL Multiphyics and main work of this paper.Chapter 2 constructs a three-dimensional fluid structure interaction model describing the flow of blood in radial artery and the expansion and retraction of radial artery, visualizing and discussing the results.Chapter 3 extracts the outlines and the bone lines of blood vessels in model.Firstly,we get pressure,norm of gradient of pressure,pressure change rate and norm of gradient of pressure change rate at t=1s、1.3s,precessing which we get the binary images containing outlines and bone lines information.Then processing projection images of actual blood vessel, we get the outlines and bone lines of actual blood vessel.lastly,these images are compared and analyzed.Chapter 4 gives the main conclusion of this paper.