脊柱颈胸结合部有限元模型的建立

目的:建立脊柱颈胸结合部椎体的三维有限元模型,以期应用于指导临床实践以及作为体外生物力学实验研究的有益补充。方法:通过对正常人的CT薄层扫描获得的原始DICOM数据图像,采用Mimic10.01软件进行数据处理,进行骨质的三维重建,使用Magic 9.9改良建立的模型,导入ANYSY 10.0软件进行计算机模拟仿真生物力学研究。结果:所建模型外观逼真,几何相似性好。三维重建结构可单独或联合显示,甚至可以进行任意结构的取舍,重建结构的任意径线及角度均可以适当的三维测量。结论:该模型的结构完整,空间结构测量准确度高,单元格划分精细重点突出,较为准确地模拟了脊柱颈胸结合部的生物力学特点,为临床医生对脊柱颈胸交界区的三维有限元模型的建立提供了一种便捷而精确的方法,为计算机分析及研究该模型局部结构在各种受力情况下的生物力学表现创造了条件。

Establishing a thtee-dimensiollal finite element model of human cerVicothoracic junction

Objective: To construc ta three-dimensional(3D) finite elementmodel of human cervicothoracic junction vertebrae that can be applied clinically to the biomechanical research.Methods:The primary DICOM images of normal human cervicothoracic junction vertebrae obtained via thin slice CT scans were reconstruct in 3D on the computer.Using the Mimic10.01 data processing technique to run three-dimensional reconstruction.Made Magic 9.9 modified the model.The modified model was used to simulate the emulated biomechanical research with the ANSYS 10.0 software.Results:The appearance of the model was vivid with great geometrical similarity.The 3D reconstruction could display cervicothoracic junction independently orjointly.Any diameter of the structures reconstructed could be measured discretionarily at any angle.Conclusion: The advantages of the model include intact structure,precise elements,outstanding key points and high measure accuracy.It is a convenient and precise method for physicians to establish the finite element model of the cervicothoracic junction.This method facilitates the computer study on the biomechanical behavior of the local structures of the model under various pressure conditions.