Computer Aided Diagnostic System For Children's Supracondylar Fracture Of Humerus Based On X3D

Network technology and Virtual Reality Technology is continuously developing, especially computer computing rate and network bandwidth is increasing, and e-business and network games and so on become very popular. Web3D technology comes into being with those things. This makes 3D application for web possible. In august 2004, the X3D specification has been approved by the International Standards Organization (ISO) as International Standard ISO/IEC 19775. There are few papers and research works on it. This paper tells a specific application of X3D in medical field, which is one of most popular Web3D technology.Supracondylar fracture of humerus is a fracture happened between humeral cadre and humeral condyle. This fracture happens a lot on children under 10 years old. Frequently happened sequela of this kind of fracture is elbow varus. To remedy it, we must tell the exact circumstances of the rotation and translation of the fracture of patients. But only few experienced radiation section doctors can draw the conclusion by frontal and side X-ray slice. The purpose of doing this design is to make ordinary doctor and houseman can do the same job by using this computer aided diagnostic system. In this way, we do not need CT images, so we can greatly reduce fee-for-service.In this design, we create a service platform based on Linux operation system, apache web server, MySQL network database and PHP script language. Clients can visit our database and query what they want through web browser. They can get circumstances of the rotation and translation of the fracture of children and features of related X-ray slices. And further more, they can watch three-dimension X3Dmodels and animations at will, so that they can get a vivid view and understand what is happening there.We primarily use browser/server architecture to construct this system, so that we don't need to develop client end software, and it makes maintenance and update more convenient. It is cross-platform, which means that whatever a browser of whatever a computer can be a client to visit our system. It is very open and extensible. Brower/server technology combined with internet/intranet technology is development trend of future. Although currently, this technology still has a little problem, undoubtedly, browser/server mode will become the only way of application system development. On database maintenance, we deploy client/server architecture, because of security concern.Because all of components of this system are cross-platform, in the process of development, we design all the system on Windows environment, because of more supported software available, and then shift it to Linux environment, because of its security and stability.In the process of this design, we deploy "editable poly" modeling method of 3DS MAX to construct arm models, and export them as vrml format files, then import them to X3D-EDIT and program. In this way, we construct three-dimension XML-coded models and animations. So three-dimension information can be transferred through network, and can be displayed by web browser. We can use any of pure text editor to develop PHP scripts, such as EditPlus., And use dreamweaver to design web pages, and deploy mysql, which is one of MySQL client end application, to develop our databases. Databases are shifted to Linux by mysqldump and mysql.This system can be used as a tool for children's supracondylar fracture of humerus. It also can be used as a teaching means of X-ray image reading. So this system is of value.