中国组织工程研究

中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (30): 5511-5515.doi: 10.3969/j.issn.2095-4344.2012.30.001

• 数字化骨科 digital orthopedics •    下一篇

基于CT数据构建人体腰骶椎的有限元模型

朱立新1，王 健1，曹延林1，樊望驹1，于郭吉2，张西兵1，叶文明1   

  1. 1南方医科大学附属珠江医院骨科中心，广东省广州市 510282；
    2天津大学化工学院，天津市 300072  
  • 收稿日期:2012-02-23 修回日期:2012-04-10 出版日期:2012-07-22 发布日期:2012-07-22
  • 通讯作者: 王健，硕士，医师，南方医科大学附属珠江医院骨科中心，广东省广州市 510282 wjian8723@163.com
  • 作者简介:朱立新☆，博士，副教授、副主任医师，硕士生导师，主要从事骨科方面的研究。

Finite element modeling construction of human lumbosacral vertebrae based on CT data

Zhu Li-xin1, Wang Jian1, Cao Yan-lin1, Fan Wang-ju1, Yu Guo-ji2, Zhang Xi-bing1, Ye Wen-ming1   

  1. 1Department of Orthopedics, Zhujiang Hospital of Southern Medical University, Guangzhou 510282, Guangdong Province, China;
    2School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
  • Received:2012-02-23 Revised:2012-04-10 Online:2012-07-22 Published:2012-07-22
  • Contact: Wang Jian, Master, Physician, Department of Orthopedics, Zhujiang Hospital of Southern Medical University, Guangzhou 510282, Guangdong Province, China wjian8723@163.com
  • About author:Zhu Li-xin☆, Doctor, Associate professor, Associate chief physician, Master’s supervisor, Department of Orthopedics, Zhujiang Hospital of Southern Medical University, Guangzhou 510282, Guangdong Province, China

PDF

449

被引次数

9

摘要：

背景：目前有限元模型的方法主要是基于医学图像的建模方法，可直接反映人体腰椎真实的几何形态。
目的：以CT影像数据为基础，利用图像处理软件建立L1~S5节段的腰骶椎三维有限元模型。
方法：选取1名男性健康志愿者，采用各向同性分辨率 0.625 mm 薄层CT扫描数据，以Dicom 格式导入 Mimics 10.0软件，三维化处理后获得腰骶段三维几何面网格模型，通过Geomagic studio 12.0软件曲面化、HyperMesh 10.0软件网格划分，最终导入Abaqus10.1软件生成腰骶椎三维有限元模型。
结果与结论：建立了精确的人体腰骶椎三维有限元模型并验证有效。应用精细的影像学数据，通过软件进行图像处理，快捷有效完成了脊柱模型的构建。此完整的多节段模型可方便考察临床疾病和外科固定对脊柱整体的影响，弥补了目前单个运动节段模型的缺陷。

关键词: 腰骶椎, 有限元, CT 图像, 生物力学, Abaqus软件, 数字化骨科

Abstract:

BACKGROUND: Now, the establishment of the finite element model is mainly based on the medical image modeling, which can directly reflect the real geometry of the lumbar spine.
OBJECTIVE: To establish the three-dimensional finite element model of L1-S5 segment lumbosacral vertebrae based on the CT image data and image processing software.
METHODS: A healthy male volunteer was selected; the data of spiral CT scan images of 0.625 mm thickness were imported into the Mimics10.01 software in Dicom format, then the lumbosacral vertebrae three-dimensional geometric mesh model was obtained after three-dimensional treatment. Finally, the three-dimensional finite element model of normal human lumbosacral vertebrae was established by Geomagic studio 12.0, HyperMesh 10.0 and Abaqus10.1 software.
RESULTS AND CONCLUSION: Accurate human lumbosacral vertebrae three-dimensional finite element model was established successfully and validated. With the accurate CT scan data, it was efficient and effective to complete the construction of the finite element model of spine by software for image processing. Compared with a single segment mode, the multi-segment model could easily investigate the effect of clinical disease and surgical fixation on the health of spine, which makes up the shortcomings of currently single motion segment model.

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