Fan Xian-qun, Zhou Hui-fang, Tao Kai, Chen Xiao-jun
Department of Ophthalmology, Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011, China.
Zhonghua Yan Ke Za Zhi. 2005 Dec;41(12):1092-7.
To reconstruct the three-dimensional (3 D) imaging and computer-generated models of the complex orbital fractures, and to develop a Computer-Aided Design/Computer-Aided Manufacture (CAD/CAM) system for orbital fracture repair.
We carried out study on 12 patients with orbital fractures from August 2003 to March 2004 in the Ninth People's Hospital. Before the orbital fracture repair, helical computer tomography scanning was applied to acquire the 3 D imaging data of the patient's orbits. The 3 D imaging data were then transferred to a CAD/CAM interactive program for image processing, which then designed and produced a stereolithography model mathematically. Using the designed software, the repair of orbital fractures could be planned with the computer. At the same time, the orbital cubane was calculated. Then the operation was performed and the effect of the therapy was evaluated.
Using the CAD/CAM system of orbital fracture repair, the 3 D image of the orbit could be reconstructed, and the orbital cubane could be calculated accurately. The preoperative surgical plan was put into reality. After the orbital fracture repair, all cases received excellent appearance and function. This system had proved to run smoothly and accurately, and could easily be controlled.
The CAD/CAM system of the orbital fracture repair may be proved as one of the most useful clinical tools for orbital surgery.
重建复杂眼眶骨折的三维（3D）影像及计算机生成模型，开发用于眼眶骨折修复的计算机辅助设计/计算机辅助制造（CAD/CAM）系统。
2003年8月至2004年3月，我们在第九人民医院对12例眼眶骨折患者进行了研究。在眼眶骨折修复术前，应用螺旋计算机断层扫描获取患者眼眶的3D影像数据。然后将3D影像数据传输至CAD/CAM交互式程序进行图像处理，该程序进而通过数学方法设计并制作出立体光刻模型。利用所设计的软件，可在计算机上规划眼眶骨折的修复方案。同时，计算眼眶立方体积。随后进行手术并评估治疗效果。
利用眼眶骨折修复的CAD/CAM系统，能够重建眼眶的3D影像，准确计算眼眶立方体积。术前手术方案得以实施。眼眶骨折修复术后，所有病例外观及功能均恢复良好。该系统运行平稳、准确，易于操作。
眼眶骨折修复的CAD/CAM系统可能是眼眶手术中最有用的临床工具之一。
