国产三维颅颌面数据激光测量系统可靠性和稳定性研究  

A study on the stability and reliability of 3D laser cranio-maxillofacial reconstruction

作　　者：张菁[1] 吕培军[1] 王勇[1] 

机构地区：[1]北京大学口腔医学院卫生部口腔医学计算机应用工程研究中心,100081

出　　处：《中华口腔医学杂志》2002年第6期469-471,共3页Chinese Journal of Stomatology

摘　　要：目的　研究国内首台由卫生部口腔医学计算机应用工程技术研究中心与中国科学院自动化所共同研制开发的三维颅颌面数据激光测量与重建系统的可靠性和稳定性。方法　对同一重建图像间隔 3周的 2次激光测量结果、同一石膏头像间隔 3周的 2次激光扫描重建图像测量结果、同一石膏头像的手工与激光扫描测量结果进行配对T检验。结果　同一重建图像间隔 3周的前后 2次测量结果 ,差异无显著性 (P >0 0 5) ;同一石膏头像间隔 3周的前后 2次激光扫描重建图像测量结果 ,差异无显著性 (P >0 0 5) ;同一石膏头像的手工与激光扫描测量结果 ,差异无显著性 (P >0 0 5)。结论　作者对重建后图像上点的辨认是可靠的 ,三维颅颌面数据激光扫描测量与重建系统的可靠性和稳定性好 ,能够对以往难以测量的内容进行测量 。Objective To study the stability and the reliability of the first 3D laser cranio-maxillofacial reconstruction system in China. Methods The same 3D laser scan image of a head plaster model was measured twice three weeks before and after. That head cast was also scanned and reconstructed twice three weeks before and after, and then the 3D images were measured. To the same head cast we compared the laser measurement with the direct manual measurement. The statistical analysis of measurements was made using the paired t test. Results There was no significant difference between two sets of measurements on the same image ( P >0.05). The difference in the measurements was not significant between two reconstructed images of the same model ( P >0 05). And there was also no significant difference between the measurements by laser and by hand ( P >0 05). Conclusions The recognition of the author to the 3D laser scan image is reliable. The laser scanning system has a good stability and reliability and can be used in clinical study preliminary.

关 键 词：激光测量系统 可靠性 稳定性 颅颌面部 人体测量术 口腔正畸学 口腔外科学 

分 类 号：R197.39[医药卫生—卫生事业管理]