颅颌面硬组织的数字化三维重建  

Rebuilding of digitized three-dimensional model of skull

作　　者：徐光宙[1] 周正炎[2] 丁国伟[2] 

机构地区：[1]新乡市中心医院口腔科,河南新乡453000上海200072 [2]同济大学附属同济医院口腔颌面外科,上海200072

出　　处：《第四军医大学学报》2006年第3期270-272,共3页Journal of the Fourth Military Medical University

基　　金：铁道部科技基金资助(TDBO1494)

摘　　要：目的利用头颅定位X线正侧位两张平片重建颅颌面的三维形态.方法选取72个颅面硬组织的骨性标志点,由两张相互垂直的定位头颅正侧位X线片上同一标志点的二维坐标,即可计算出该点的三维坐标.通过B样线条的生成原理拟合出颅颌面硬组织的三维表面.结果通过B样线条的生成原理拟合出了颅颌面硬组织的三维表面,并可以作出基本的旋转及缩放.结论利用头颅定位X线正侧位两张平片可初步重建颅颌面的三维形态,为最终实现三维分析、三维测量奠定了基础.AIM ： To create a digitized three-dimensional （3D） model of skull by using Broadbent-bolton lateral and frontal biorthogonal radiographic planes. METHODS： 3D landmarks were located from the conventional lateral and posteroanterior cephalograms and 3D model was fitted by using B-Spline curve. RESULTS： Model of 3D-surface of skull was made by B-Spline curve. CONCLUSION： Rebuilding the 3D surface of skull lays the basis for 3D measurement and analysis.

关 键 词：头影测量 B-样条函数 几何造型 颅颌骨 三维重建 

分 类 号：R318.04[医药卫生—生物医学工程]