颌面外伤螺旋CT三维成像的评价

Evaluation of Spiral CT and Three- dimensional(3-D) Reconstructions in Maxillofacial Trauma

目的:评价螺旋CT扫描三维成像对颌面外伤的临床应用价值。材料与方法:使用Somatom Plus S型CT扫描机和随机所附3D软件对25例颌面外伤作三维成像显示。由3位放射诊断医生和4位口腔颌面外科医生用双盲法对每例二维和三维CT图像分别作出评价。结果:三维CT对骨折全貌的显示、骨折块数目测定、移位及骨折分型优于二维CT。结论:螺旋CT扫描获得的容积数据可重建高精度二维和三维图像;三维图像能完整地显示骨折全貌,便于临床医生及时作出诊断、制定手术方案和进行术后评估。

Purpose: To evaluate the diagnostic value of spiral CT scanning and three - dimensional(3 - D) reconstructions in maxillofacial trauma. Materials and methods: Spiral scanning and 3-D reconstructions of 25 cases with maxillofacial trauma were performed with a Somatom Plus CT scanner and a 3 - D reconstrution software. 2 - D CT and 3-D CT of each case were evaluated by three radiologists and four facial surgeons. Results: 3-D CT was supprior to 2 - D CT in illustrating the location fracture of severity and the displacement of bony fragments. Conclusion: Spiral scanning can show volumetric data and increase the accuracy of the data. 3-D CT can give some help in preoperative diagnosis, surgical planning and predicting the postoperative changes.