计算机屏幕定点可重复性相关因素分析  

Related factors of landmarks identification repeatability in computer monitoring

作　　者：李晓智[1] 李跃[2] 温兴涛[1] 

机构地区：[1]重庆医科大学附属第一医院口腔科,重庆400016 [2]西南师范大学附属医院,重庆400715

出　　处：《第二军医大学学报》2003年第12期1352-1355,共4页Academic Journal of Second Military Medical University

基　　金：重庆市科委重点攻关项目(6052)

摘　　要：目的:研究计算机屏幕定点的可重复性相关因素。方法:随机选择30张头颅定位侧位片,由两名操作者在计算机屏幕上用鼠标各进行两次定点,获得标志点的纵、横坐标值,对操作者本身及操作者之间所定位的标志点在坐标轴上的各种定点情况进行分析研究。结果:(1)操作者本身及操作者之间定位标志点时在纵横坐标上的定点可重复性不同;(2)操作者之间定点可重复性在一定范围内具有相似性;(3)操作者所定位的部分标志点本身在纵横坐标上的定点可重复性有显著性差异。结论:标志点定位的可重复性与标志点所在位置、人眼对标志点的准确识别尤其是在纵向上的识别以及X线片的质量有密切的关系。Objective:To study the related factors of landmarks identification repeatability in the computer monitoring. Methods:Totally 30 lateral cephalograms were selected at random, and the landmarks were identified by 2 orthodontists with the computer monitor twice. The data were obtained and the differences were analyzed. Results:There were differences in inter-operator and intra-operator in their coordination. The operators were similar to each other within a certain range. There were significant differences between the data of the abscissas and ordinate in some landmarks. Conclusion:The repeatability of identified landmarks is closely related to the location of the landmarks, the landmarks identification by human eyes and the quality of the X-rays.

关 键 词：计算机屏幕定点 可重复性 相关因素 X线头影测量 

分 类 号：R816.1[医药卫生—放射医学]