Theory And Methods Of Modelling 3D Heterogeneous Bio-Tissues Based On Medical Images

As a interdisciplinary research area which aims at producing complex organ or tissue, bio-manufacturing is a new trend combining manufacturing science and life science. Started from the application requirements of bio-manufacturing and employing images reverse theory and 3D dataset reconstruction methods, this paper proceeds theoretical and methodological research on modelling heterogeneous bio-tissues and the key issues of manufacturing the three-dimensional heterogeneous model using rapid prototyping. The creative contributions may be summarized as follows:(1) On the basis of deep study in the advantages and disadvantages of the surface rendering and volume rendering, utilizing volume rendering algorithm in the modelling 3D heterogeneous bio-tissues is proposed. In order to express the attributes texture, shape and characteristics and the level of relations of the organ or tissue in the l, using color and transparency mapping function makes sense, which solves the key problem of expressing the heterogeneous entity properties in the bio-tissues mode.(2) In the information conversion of the heterogeneous entity, two data processing methods facing rapid prototyping is proposed: one is that the model is stored as color STL file format, the other is that the model is directly sliced into a series of BMP file format, which can be used as the original data of color three dimensional ink-jet printing device.(3) In the MFC framework and VTK5.0.3, three-dimensional heterogeneity bio-tissues modelling system based on the medical images is developed, and the heterogeneous bio-tissues model is built and the attributes is expressed.The work in this dissertation is of great theoretical and engineering application in enriching the theory of bio-tissues modeling and the heterogeneous entity modeling, and promoting the digital manufacturing technology for further development.