基于三维重建技术及有限元分析的骨密度测量

被引:27
作者
张国栋 [1 ]
陶圣祥 [2 ]
毛文玉 [3 ]
陈建桥 [3 ]
栾夏刚 [2 ]
郑晓晖 [4 ]
廖维靖 [1 ]
机构
[1] 武汉大学中南医院康复医学科
[2] 武汉大学中南医院骨科
[3] 华中科技大学力学系
[4] 武装警察部队福建总队医院骨科
关键词
骨密度; 三维重建; 有限元; 骨质疏松症; 数字化骨科技术;
D O I
暂无
中图分类号
R580 [];
学科分类号
摘要
背景:为减少有限元分析的运算量,使之更具有临床实用性,前期试验对赋予材料属性进行了探讨,论证了赋予骨骼10种材料属性可以达到有限元分析的要求,同时发现通过有限元分析的方式,可以实现骨密度值的求解。目的:探讨基于三维重建技术及有限元分析测量骨密度的方法,对骨骼有限元分析的一般过程进行一定规范。方法:选用11侧股骨上段标本,对照组直接测量标本的质量;试验组将11侧标本进行高速CT薄层扫描,在Mimics10.0中进行三维重建,在Ansys中进行体网格划分,在Mimics中赋予10,100,400种材料属性,输出至Ansys计算骨骼中每一种材料属性的体单元体积,根据CT扫描灰度值与骨密度的经验公式,计算标本质量及密度,进行统计学处理。结果与结论:骨密度单因素方差分析结果显示,对照组与赋予10,100,400种材料属性各试验组差异均无显著性意义(P均>0.28),试验组各组别之间差异均无显著性意义(P均>0.8)。结果提示,该试验方法可定量测量骨骼质量、密度及骨密质和骨松质的比例,赋予骨骼10种材料属性即可达到测量要求,试验结果可为骨质疏松症的骨密度与有限元分析的统一作初步准备。
引用
收藏
页码:1539 / 1544
页数:6
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