The Ideal Dichotomy Structured Of Human Lung Airway Tree And Its Visualization

Lung airway tree is the gas transport channel between the human inside respiratory system and the outside atmosphere. The physiological characteristics and morphological characteristics of the respiratory tract are directly related on its ventilation function. The clinical studies have shown that respiratory diseases always occur at the respiratory tract section.Therefore, the establishment of an ideal lung airway tree has great search value and theoretical significance.While predecessors have done a lot of research on lung airway tree, but the 2D modeling they explored were essentially based on Weibel’s model. Due to the limited technical conditions, it does not extend to the 3D plane. And there is no real human data using on modeling.There was an ideal 3D bifurcated model, reflected to the lung airway tree characteristics, established in this thesis. Based on the analysis of the relevant information about the anatomy of the lung airway tree and the principles of sample, fast and efficient, an approach of bifurcated symmetrical fractal structure was used to describe the morphological characteristics of all levels of the lung airway tree. Firstly, a 2D skeleton model of lung airway tree was established using the OpenGL visualization tool And then a 3D lung airway tree skeleton model was built which used the VTK visualization tool through the study of 2D modeL Finally, through the analysis of 3D skeleton model, a mathematical lung airway tree model was established based on the VTK visualization tool. And then calculate the specific parameters of the length of the biennial angles and diameters of bronchi through the analysis and statistics of real human airway tree. The generated model was consistent with the real human lung airway tree model in the form of morphology and geometric parameters. This result showed that the complexity of the human body can be described by a mathematical simulate model.There was a great mathematical model of 3D lung airway tree based on visualization tools showed in this thesis. The results of the numerical simulation provide a basis for the gas flow and distribution of the lung airway tree research in the future and fast 3D printing. It also has an importance of theoretical significance for respiratory clinical diagnosis and subsequent treatment.