中文摘要：

目的 应用激光快速成型技术制作骨盆三维光弹生物力学模型.方法 通过螺旋CT扫描获取医学图像,制作计算机辅助设计（CAD）模型并存储为STL格式文件,将文件载入激光快速成型机,对Somos 11120光敏树脂通过＂分层制造、逐层叠加＂的原理制造出三维骨盆实体模型.结果 制成的模型均匀透明,表而光滑,无气泡及开裂变形.未加载时在偏振光场种未见折射条纹出现.结论 利用激光快速成型技术快速制备骨盆三维光弹生物力学模型,与传统方法比较,可减少制作时间及制作成本.

英文摘要：

Objective To build a three dimensional photoelastic model for pelvic biomechanic experiment with stereolithography technology. Methods Through the spiral CT scan to obtain medical images, we built CAD model and transformed it to the files with the STL format which could be identified by rapid prototyping machine. The data were input into laser rapid prototyping machine. Three-dimensional pelvic model were fabricated by machine in layer-by-layer manufacturing principle with the material of Somos 11120 Photosensitive resin. Results The model was homogeneous and transparent with smooth surface, no bubbles and cracking deformation. There were no stripes in the field of polarized light refraction when not loaded. Conclusion The model was made successfully with stereolithography technology. Compared with traditional methods, this method could greatly shorten production time and reduce the production costs.