螺旋CT图像重组对颌骨埋伏阻生牙的诊断价值  

Diagnostic Value of Three Dimensional CT for Impacted Teeth in Maxillofacial Region

作　　者：吴爱琴[1] 郑文龙[2] 许崇永[1] 程建敏[1] 林新平[3] 胡荣党[3] 

机构地区：[1]温州医学院附属育英医院放射科,浙江325000 [2]温州市第二人民医院放射科,浙江325001 [3]温州医学院附属口腔医院,浙江325000

出　　处：《放射学实践》2006年第1期34-35,共2页Radiologic Practice

摘　　要：目的:探讨螺旋CT图像重组技术对颌骨埋伏阻生牙的诊断价值。方法:对31例颌骨埋伏阻生牙患者行横轴面薄层CT扫描,采用最大密度投影(MIP)、多平面重组(MPR)、曲面重组(CPR)及容积再现(VR)技术进行图像后处理。结果:对31例共38颗埋伏阻生牙,MSCT重组图像均能清楚显示其数量、位置、阻生方位、唇腭侧、萌出方向及与邻牙的关系。结论:螺旋CT图像后处理技术能够正确诊断埋伏阻生牙及其相关情况。Objective：To evaluate the value of spiral CT 3D reformations for the diagnosis of impacted teeth in maxil lo-facial region. Methods： 31 cases with impacted teeth in maxillofacial region were examined by thin-slice CT scanning and 3D reformations including maximum intensity projection （MIP）, multi-planar re formation （MPR）, curved planar reforma tion （CPR） and volume rendering （VR） in order to obtain 3D images of arbitrary and curved planes. Results：In 31 cases, the amount, position, orientation, labial or palatal location, eruption orientation and relation with adjacent teeth of 38 embedded impacted teeth can be clearly demonstrated in 3D images. Conclusion：The impacted teeth and correlated information can be provided by spiral CT 3D reformations,it plays an important role for rectification treatment.

关 键 词：牙 阻生 体层摄影术 X线计算机 图像处理 计算机辅助 

分 类 号：R816.98[医药卫生—放射医学]