摘要
目的建立人体股骨上段三维有限元模型,从几何上完全忠实于真实的解剖结构,作为今后对股骨进一步有限元分析的基础。方法采用活体股骨上段为研究对象,应用CT扫描技术获取CT图像资料,运用三维图像重建软件3D-doctor进行图像重建,获取股骨上段三维坐标,输入有限元分析软件Cosmos/M,通过确定材料特性参数和网格化,建立完整的股骨上段三维有限元模型。结果建立的三维有限元模型几何形状与材料特性还原良好,网格大小可根据研究者的需要在一定范围内自行调整,可以满足有限元分析的需要。结论采用CT扫描资料建立股骨三维有限元模型切实可靠,可以最大限度地忠实于个性化的解剖结构,且利用这种方法可以更精确地模拟复杂几何形态的实体。
Objective To establish a three- dimensional finite element model of man proximal femur as a foundation of finite element analysis later, which is absolutely obedience to the true anatomical structure in geometry. Methods Proximal femur in vivo as specimen, was used to obtain the CT images, and the 3D - doctor software was used to reconstruct the 3D model to obtain the three - dimensional coordinates of proximal femur which were imported to the Cosmos/ M software of finite element analysis. After determining property parameter of materials and meshing, an intact three-dimensional finite element model of proximal femur was set up. Results The established three-dimensional finite element model shows that both the geometry shape and reduction of material character are ideal, the size of meshes can be freely adjusted to some extent to meet researchers＇ demands. Conclusion It is a reliable way to build three-dimensional finite element model with CT scan data, and at the same time the method can be furthest obedience to the individual anatomical structure and modify the complicated geometry figure more accurately.
出处
《医疗设备信息》
2006年第12期1-3,共3页
Information of Medical Equipment
关键词
股骨
图像重建
CT断层扫描
三维有限元模型
femur
image reconstraction
CT scan
three-dimensional finite element model
