CT扫描在个体化定制腕舟骨假体中的初步应用

The pnelinary application of computed tomograph scan in customize-made scapohoid implant

目的螺旋CT扫描获取腕舟骨表面轮廓信息,为快速成型技术的个体化人工腕舟骨假体研究奠定基础。方法采用螺旋CT对健康成年人双侧腕关节进行层厚0.625mm扫描,获取腕关节DICOM格式文件,导入MIMICS 10.0软件进行腕舟骨三维重建。结果实现了CT图像信息的矢量转换,获得了腕舟骨三维实体模型。结论由螺旋CT数据进行腕舟骨外形轮廓的矢量化重建,可获得精确的腕舟骨三维实体模型,为腕舟骨假体计算机辅助设计和快速成型制造提供理论依据;对医学图像信息的矢量转换简便易行,在骨科生物制造领域有较好的应用前景。

Objective To achieve three dimensional（3D） contour image of scaphoid for fabricating custom -made artificial scaph- old-prosthesis. Methods The ambi-wrist jionts of healthy adult were scanned with spiral X-ray computed tomography with 0. 625mm thick slice,obtain the formatting documents of DICOM,and reconstruct three-dimensional tereo-models of seaphoid with MIMICS10.0. Results The 3D contour image of scaphoid presented was edited and processed easily for the computer aided design （CAD） of custom-made artificial seaphoid. Conclusion The 3D contour image of scaphoid can be obtained by spiral CT scanning, and the digitized data can be applied directly to CAD of custom-made artificial implant and subsequently rapid prototyping fabricating. In addition, the reconstruct ionmethod is simple and can be applied widely to clinical implant fabricating practice of orthopaedics