The Implementation Of MICAD System Based On 3D Posture-Appearance Rebuild Technology

This paper analyzes the condition of domestic medical diagnosis and treatment; summarizes the demand of the Computer Aided Diagnostic System with emphasis on the revolving migration for children's supracondylar fracture of the humerus; compare the existing MICAD and 3D visualization technology; put forward a novel 3D-rebuild technology: 3D Posture-Appearance rebuild technology.The 3D Posture-Appearance rebuild technology is different from the normal 3D-reconstruction (including multi-CT rebuild and direct-Volume technology), and also different from simple simulation. The data need in normal 3D-reconstruction is totally stemmed from clinical CT images. The simple 3D-simulation is to design a model to simulate the real human body or physiological structure based on understanding of the real body. The 3D Posture-Appearance rebuild technology makes use of the 3D constructive and display ability of simulation, as the same time, changes the relative position and posture of the 3D models according to the pathology diagnostic message offered by the clinical X-ray slice, thus makes the 3D model demonstrate different posture according to different diagnostic message, achieves the goal of visualization of the diagnose result. The three-dimensional Posture -Appearance rebuild technology has merged the simulation data and diagnostic information. The system has simple and easy operation interface, and canadjust the posture, size, and display mode of the focus shown at will on the terminal monitor.In the set-up of the auxiliary system, we have use the 3D dimensional Posture-Appearance rebuild technology, pattern reorganization of X-rays image and pattern-recognition method, and the expert diagnostic database. The implementation of the system utilizes the 3D modeling method of 3DMAX, sets up digital model of shoulder bone, ulna, and radio, and then exports them to ".3DS"file. Thus the model can be read, displayed, controlled and adjusted by OpenGL functions. The whole system is developed on the Visual C++ Platform.When applied in the clinical diagnose of revolving migration for supracondylar fracture, the system will play an auxiliary role to diagnose and display the result clearly. If applied into the traditional X-ray diagnostics among the teaching course, the system will introduce automatic revolving migration diagnosis and 3D visualization to the traditional X-ray diagnosis; consequently improve the existing teaching methods of boring X-ray image reading. The implementation shows that by merging the diagnostic information with the simulation data, it can cost less time on rebuilding the whole model of clinical object. More importantly, it the system can make use of existing common X-ray images and display 3D object without CT imaging instrument. It is a valuable system of MIC AD.