中国组织工程研究

中国组织工程研究 ›› 2010, Vol. 14 ›› Issue (52): 9726-9729.doi: 10.3969/j.issn.1673-8225.2010. 52.010

• 数字化骨科 digital orthopedics • 上一篇    下一篇

以螺旋CT数据建立的颅底三维有限元模型

刘文芳1，王  菲1，宋  哲1，任国山2   

  1. 1沧州医学高等专科学校外科教研室，河北省沧州市     061001；2河北医科大学解剖教研室，河北省石家庄市     050017
  • 出版日期:2010-12-24 发布日期:2010-12-24
  • 通讯作者: 任国山，教授，硕士生导师，河北医科大学解剖教研室，河北省石家庄市 050017
  • 作者简介:刘文芳★，女，1976年生，河北省沧州市人，汉族，2010年河北医科大学毕业，硕士，主治医师，讲师，主要从事外科学教学与临床研究。 dancing_liu@126.com

Establishment of a three-dimensional finite element model of skull base using spiral CT image

Liu Wen-fang1, Wang Fei1, Song Zhe1, Ren Guo-shan2   

  1. 1 Department of Surgery, Cangzhou Medical College, Cangzhou  061001, Hebei Province, China; 2 Department of Anatomy, Hebei Medical University, Shijiazhuang  050017, Hebei Province, China
  • Online:2010-12-24 Published:2010-12-24
  • Contact: Ren Guo-shan, Professor, Master’s supervisor, Department of Anatomy, Hebei Medical University, Shijiazhuang 050017, Hebei Province, China
  • About author:Liu Wen-fang★, Master, Attending physician, Lecturer, Department of Surgery, Cangzhou Medical College, Cangzhou 061001, Hebei Province, China dancing_liu@126.com

PDF

534

被引次数

24

摘要：

背景：近年来国内外学者进行了大量生物力学实验研究，试图解释颅脑损伤的发生过程和受力大小与损伤部位的相关性。但是目前针对颅底骨折原因的研究主要是直接暴力，对于间接暴力作用于颅底后颅底的应力分布情况尚无报道。
目的：利用螺旋CT数据、三维重建软件及有限元分析软件，在普通PC机建立颅底三维有限元模型。
方法：选择正常成年女性作为建模对象，无头颈部损伤、手术及其他病史，CT扫描前进行X射线常规检查排除器质性疾病。头部螺旋CT薄层扫描后，将图像数据输入医用图像与三维重建软件MIMICS中，建立颅底的三维可视化模型。将该模型简化优化后，导入有限元分析软件ANSYS 10.0中，建立颅底的三维有限元模型。
结果与结论：建立了由额骨、蝶骨、筛骨、颞骨、枕骨等共同组成的颅底实体模型，由于成年人骨缝闭合，所以将其视为一个整体。对实体模型划分网格，得到颅底的三维有限元模型，共有51 053个单元，80 273个节点。提示所建立的颅底有限元模型外形逼真，几何相似性好，可以用来进行颅底骨折的生物力学研究。

关键词: 颅底, 三维重建, CT, 有限元, 间接暴力, 颅底骨折　　

Abstract:

BACKGROUND: In recent years, a large number of biomechanical experiments have conducted to attempt to explain the correlation of craniocerebral injury with stress size and injury site. However, studies on skull fracture cause mainly focus on direct violence, and very little is known about the stress distributions in the skull exposed to indirect violence.
OBJECTIVE: Using spiral CT data, three-dimensional reconstruction software, and finite element analysis software, to establish a three-dimensional finite element model of the skull in the ordinary PC.
METHODS: Normal adult women were selected, free of head or neck injury, surgery or other history of disease. X-ray routine examination was performed to exclude organic disease, followed by head spiral CT TLC scanning. Image data were input into medical image and 3D reconstruction software MIMICS to establish the three-dimensional visualized model of the skull. The simplified model was optimized and introduced to finite element analysis software ANSYS 10.0 to establish three-dimensional finite element model of the skull.
RESULTS AND CONCLUSION: The entity model of the skull base was composed of frontal bone, sphenoid, ethmoid, temporal bone and occipital bone. Since the adults’ sutures are closed, the skull is viewed as a whole. The entity model was meshed to create a 3D finite element model which consisted of 51 053 units and 80 273 nodes. The established finite element model of the skull base is verisimilar geometrically, which can be used in the biomechanic research.

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