Development Of A Post-Processing System For The Calculation Of Blood Flow In Left Ventrical

Post-processing system of ventricular hemodynamics is designed and developed on the basis of finite element data to analyze parameters of ventricular hemodynamics for research and clinical flexibly and conveniently. Post-processing system can carry out multi-dimension and multi-derivatives calculation and display those results. Finite element analysis is widely used in hemodynamics research field, which bring about more attention in post-processing of data. For commercial software, there exist three serious problems. The first one is compatibility issues for integrated post-processing module, which failure to handle with data with variety of formats. The second is rare support for professional parameters resulting in limitation of data analysis. Finally, strong professional knowledge and programming skills are required for researchers to use those integrated post-processing module. Research in the field of finite element post-processing has been made certain progress, but in view of post-processing of ventricular hemodynamic still need to use a variety of methods to describe results, especially in the field of movement and energy distribution of ventricular blood flow. Therefore, a convenient and effective post-processing system is designed to accurately extract specific data for researcher, which is significant for analysis of ventricular blood flow.In this thesis, the designing and implementing of the system are discussed including some important correlative technologies. Firstly, data formats and development environment are confirmed. En Sight software as data transition is used to compatible various formats. Visual Studio and C# are analyzed and selected to build the system architecture. Secondly, hemodynamics parameters of ventricular blood are studied. Blood vorticity, blood kinetic energy and blood viscous energy are chosen to perform the function of ventricular. For this part, algorithms of those parameters are derived. Then, design and implementation principles of this system are drawn up. Using object-oriented analysis and design techniques, the system is divided into the control layer, input and output management layer and data processing layer. At the same time, data transfer is realized between each layer. In the detailed design and implementation stage, the emphases of discuss are laid on encapsulation and inheritance, file analysis, data output and calculation. Finally, a case with finite element calculation results of ventricular blood is provided as an example to verify the maneuverability and reliability of the present software system.The system is discussed, in this thesis, a series of functions including file analysis, data output and calculation. Through a case to verify this system, the result shows that it is provide a convenient interface and guide to help user to analyze finite element data of ventricular. Also, it can be used as a powerful tool to research the ventricular hemodynamic.