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Three-dimensional reconstruction of bone contour for manufacturing artificial bioactive bone
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- Author:
- No author available
- Journal Title:
- JOURNAL OF THE FOURTH MILITARY MEDICAL UNIVERSITY
- Issue:
- 22
- DOI:
- 10.3321/j.issn:1000-2790.2001.22.004
- Key Word:
- 体层摄影术,X线计算机;图像处理,计算机辅助;髁,股骨;生物活性骨
Abstract： 目的探讨一种由螺旋CT图像反求(reverse engineering, RE)人体骨骼表面轮廓的方法,为生物工程活性骨个体化制造三维建模. 方法采用马可尼公司PQ 6000螺旋CT对小型猪股骨髁部进行层厚1 mm,螺距1.0扫描,在CT机的Voxel Q图像工作站进行初期三维容积重建,之后对重建数据间隔0.2 mm下载二维断层图像. 自行开发数据格式转换软件,对下载图像进行滤波、去噪等处理,求出断面图像的二维边缘轮廓矢量化数据线图,将线图输入美国Imageware 公司Surfacer 9.0图像处理软件,对轮廓曲线进行矢量叠加,进行股骨髁矢量化三维重建. 结果获得了股骨髁表面轮廓三维实体模型, 模型与实物高度相似,可编辑性强,可进行生物工程活性骨的计算机辅助设计、制造. 结论由螺旋CT数据进行骨骼外形轮廓的矢量化重建可以获得精确的三维实体模型,为人工生物活性骨制造打下了基础;本方法简单、快捷,重建模型与实物高度相似,在骨科、口腔颌面外科假体个体化制造领域亦有良好的应用前景.
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