X线颅面影像自动识别分析系统的研制  

Development of a computerized automatic identification system for use in cephalometry

作　　者：李诗佩[1] 吴求亮[2] 张恒义[3] 

机构地区：[1]杭州市第二人民医院口腔正畸科,310015 [2]浙江大学医学院附属口腔医院口腔颌面外科 [3]浙江大学生物医学工程及仪器科学学院

出　　处：《中华口腔医学杂志》2002年第6期466-468,I004,共4页Chinese Journal of Stomatology

摘　　要：目的　建立自动X线头影测量分析系统 ,简化测量步骤 ,为临床进行头影测量分析提供简便可靠的方法。方法　应用图形、图像处理技术和一定的人工智能 ,用VisualC语言编程 ,采用中值滤波 ,直方图均衡增强图像 ;用Laplacian和Canny进行边缘检测 ;通过对各解剖结构建立模板 ,实现软硬组织轮廓线的自动描绘。结果　本系统能自动提取软组织轮廓线 ,并对软组织标志点进行自动识别和测量分析 ;对下颌骨各标志点、耳点和蝶鞍点都能自动识别 ,并能自动生成硬组织轮廓线。结论　X线颅面影像自动识别分析系统是头影测量更方便。Objective To establish the automatic X ray cephalometric analysis system to simplify cephalometric steps and to provide a convenient and reliable method for cephalometric analysis.Methods The system which was programmed by visual c language,and graphics and image processing techniques and artificial intelligence were used. The techniques related to computer digital image processing and pattern recognition such as Median filtering, Histogram equalization, Laplacian and Canny edge detection were introduced. It could automatically outline the contour lines of the hard and soft tissues by establishing the templates of the variable anatomical structures. Results The following functions were established: (1) automatically outlining the contour lines of the soft tissues. (2)automatically recognizing,measuring and analysing the landmarks of soft tissues. (3) automatically recognizing porion?sella and the landmarks of the mandible. (4)automatically building the contour lines of the hard tissues. In brief, the system used the more advanced methods, calculated more precisely and saved more time and energy than other systems. Conclusion The system is a more convenient and precise tool in cephalometry.

关 键 词：X线颅面影像自动识别分析系统 计算机辅助设计 口腔正畸学 头影测量 口腔外科学 

分 类 号：R197.39[医药卫生—卫生事业管理]