Abstract
目的 构建解剖特征清晰的三维外鼻形态表面模型,为建造鼻缺损修复计算机辅助设计/计算机辅助制作系统(computer aided design/computer aided manufacture,CAD/CAM)用于可视化数字鼻型库奠定基础.方法选择1例老年女性的外鼻三维点云数字模型为研究对象,将外鼻按照解剖形态分为6个区,即鼻梁区、鼻尖鼻小柱区、左鼻背区、右鼻背区、左鼻翼鼻孔区、右鼻翼鼻孔区,分别在0.25、0.50、0.75、1.00 mm 4种点距时简化数据构面.选择最接近外鼻形态的构面参数.结果当点距为0.50 mm时既可以简化数据,又可以清晰展现外鼻的解剖特征及老化状态.结论合理的数据分区与适当的参数选择,可以获取解剖结构清晰的三维外鼻形态曲面模型,这对开发颜面缺损修复CAD/CAM系统具有重要意义。
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