64层螺旋CT在埋伏牙诊断中的应用价值

目的:探讨64层螺旋CT在埋伏牙影像学诊断的应用价值.方法:97例经曲面体层X片确诊为埋伏牙的患者行64层螺旋CT容积扫描,将扫描信息利用AW 4.3工作站对数据进行多平面重建、曲面重组、最大强度投影、表面遮盖显示、容积再现技术重组图像.结果:97例埋伏阻生牙患者中64层螺旋CT明确诊断且显示清晰95例,占总数97.9...

Value of reconstruction technique of 64-slice spiral CT in the diagnosis of impacted teeth

Objective：To explore the value of 64-slice spiral CT in the diagnosis of impacted teeth.Methods：97 patients,aged 6 to 27 years with an average of 13.6 years,who had been diagnosed as having impacted teeth by X-ray orthopantomography underwent volume scan by 64-slice CT.The data of the 64-slice spiral CT scans were processed by GEAW 4.3 workstations in different ways such as multi-planar reconstruction,curved planar reformation,maximum intensity projection,surface shaded display and volume rendering technique.Results：95 cases of impacted teeth,which were 97.9% of the total 97 cases of patients,were diagnosed precisely and clearly by 64-slice spiral CT,while 23 cases of impacted teeth,which were 23.7% of the total 97 cases of patients,were diagnosed precisely and clearly by X-ray orthopantomography.97 cases of impacted teeth,which were 100% of the total 97 cases of patients,were located accuratly by 64-slice spiral CT,while 23 cases of impacted teeth,which were 23.7% of the total 97 cases of patients,were located accurately by X-ray orthopantomography.Conclusion：64-slice spiral CT reconstruction techniques are helpful to the diagnosis of impacted teeth,particularly,to the accurate positioning of impacted teeth.