计算机辅助正颌外科手术的预测和模拟系统——颅颌面硬组织的三维重建

COMPUTER -ASSISTED THREE DIMENSIONAL PLANNING AND SIMULATION SYSTEM FOR ORTHOGNATHIC SURGERY:CRANIOFACIAL BONES' MODEL RECONSTRUCTION

目的:由二维CT切片图像重建三维颅颌面骨骼立体模型,供进一步的正颌外科手术预测和模拟系统使用。方法:利用计算机和图像处理技术对患者的颅颌面CT原始资料进行预处理,采用移动立方体算法重建三维模型。结果:建立了三维坐标系下的可从任意视角观察的颅颌面硬组织模型。结论:三维CT重建模型更加形象直观、精度更高。

Objective:In order to develop a orthognathic simulation system we reconstruct a cra niofacial skeleton model based on tw o dimensional CT slices .Methods:After preprocessing the acquired CT data and designing the coordinate sy stem,we use the Marching Cubes Algorithim method to generate a three dimensional model .Results:The reconstructed image can be seen f rom an arbitrary viewing point .Conclusion:Using this system ,we obtain a more pr actical and accurate three dimensio nal Craniofacial Bones' Model.[