颅面部螺旋CT三维线距测量的准确性评价  

The accuracy of 3D-CT volume rendering for craniofacial linear measurements

作　　者：刘东旭[1] 王春玲[1] 刘莉[1] 董作英[1] 柯华峰[1] 于朝阳 

机构地区：[1]山东大学口腔医学院口腔正畸研究所,山东济南250012 [2]山东省电力医院放射科,山东济南250012

出　　处：《上海口腔医学》2006年第5期517-520,共4页Shanghai Journal of Stomatology

基　　金：山东省科技厅2005年攻关项目(2005GG4202017)~~

摘　　要：目的:研究颅面部螺旋CT三维线距测量与实测距离的一致性。方法:选择12个干燥头颅,采用GE公司16层螺旋CT常规扫描后,将头颅数据转至工作站,进行颅颌面三维重建。选择正畸常用的16个颅面骨性解剖标志点,分别使用DisplayTools测量工具和游标卡尺进行20个项目测量。采用SAS9.0统计软件包进行配对t检验,比较螺旋CT三维线距测量与实测距离的一致性。结果:螺旋CT三维线距测量与游标卡尺实测结果相比,P值范围为0.0995～0.9812,所有测量项目均无显著性差异。结论:螺旋CT体绘制图像颅面解剖标志点间线性距离与实测距离具有一致性,螺旋CT三维测量有望替代实际测量,用于头影测量分析。PURPOSE： This study was designed to determine the consistency of craniofacial measurements using spiral computed tomography volume rendering by computer systems and sliding caliper. METHODS： The study population consisted of 12 cadaver heads which were examined with spiral CT. The archived CT data were transferred to a workstation, and 3D-CT volume rendered images were generated using computer graphics tools. Linear measurements （n= 20）, based upon conventional craniometric anatomical landmarks （n=16） were made, by Display Tools and sliding caliper respectively. The consistency between the two measurements was analyzed by paired t test using SAS9.0 software package. RESULTS： The results demonstrated no statistically significant difference between imaging measurement and physical measurement, P〉0.05. CONCLUSIONS： There is significant consistency between spiral CT measurement and physical measurement for craniofacial linear distance. 3D-CT volume rendering images using craniometric measurements can be used for clinical and basic studies in stomatology.

关 键 词：螺旋CT 颅面 实际测量 线距 准确性分析 

分 类 号：R816.98[医药卫生—放射医学]