Three-dimensional reconstruction of femur based on Laplace operator and statistical shape model

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2 Scopus citations

Abstract

通过二维图像进行重建的三维模型,是目前术前规划、人工关节定制的普遍需求。本文提出一种统计形状模型与拉普拉斯曲面变形相结合的方法,应用于股骨图像的三维重建,以优化传统统计建模重建过程中特征不足和信息损失造成的精度问题。该方法将基于统计形状模型的重建结果用能够代表形状特征的拉普拉斯算子表示,在拉普拉斯坐标系下进行曲面结点坐标变换,建立骨骼新特征,使重建模型与二维图像充分拟合。最后选取50例股骨模型验证本方法的有效性。结果表明,引入拉普拉斯曲面变形后的方法较传统统计形状模型的精度提升了16.8%~25.9%。该方法能够以更高精度完成骨三维重建,为术前个性化假体设计及其精准定位与快速生物力学分析等研究提供模型基础。.

Original languageEnglish
Pages (from-to)1168-1174
Number of pages7
JournalSheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi
Volume40
Issue number6
DOIs
StatePublished - 25 Dec 2023

Keywords

  • Bone geometry
  • Laplace operator
  • Statistical shape model
  • Three-dimensional reconstruction

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