X线头影和模型视频立体测量系统的建立  

Development of a video system for three-dimensional cephalometry and dental cast analysis

作　　者：王邦康[1] 厉松[1] 周立新[1] 周洁珉[1] 朱迎春[1] 陈辉[1] 

机构地区：[1]首都医科大学附属北京口腔医院,100050

出　　处：《中华口腔医学杂志》2000年第3期230-232,共3页Chinese Journal of Stomatology

摘　　要：目的　建立计算机辅助的牙颌模型立体分析及二维、三维X线头影测量系统。方法　将视频测量技术应用于口腔医学领域 ,系统由控制场坐标、两台CCD彩色摄像机、真彩色图形卡、高清晰度彩色监视器及计算机组成。通过特定的测量软件完成模型及X线片测量分析。三维X线头影测量以头颅正侧位X线片为资料 ,重建颅颌标志点三维坐标 ,反映颅颌真实的三维结构 ,同时也可分别完成对正、侧位片的二维测量。结果　经检测 ,模型立体分析的误差小于 0 0 9mm ,三维头影测量系统精度为 0 45mm ,符合临床要求。Objective The purpose of this article is to introduce the outline of our newly developed video system for three dimensional cephalometry and dental cast analysis Methods The video measuring technique was utilized in the field of dentistry in our study Two CCD cameras were used to capture the images both of the dental cast and headfilms The dental cast analysis and three dimensional cephalometry shared a set of operating system The three dimensional reconstruction was based on the LAT and PA films Results The measurement error of dental cast analysis is less than 0 09 mm,and the error of three dimentional cephalometry is less than 0 45 mm Conclusions The clinical application suggests that the use of our system is feasible not only for clinical evaluation of malocclusion but also for saving time necessary for treatment planing and diagnosis

关 键 词：头影测量学 口腔正畸 X线摄影 视频立体测量系统 

分 类 号：R783.5[医药卫生—口腔医学]