螺旋CT三维重建在复杂颌面骨折的应用

目的:探讨螺旋CT三维重建对复杂颌面骨折的临床应用价值。方法:对26例复杂颌面骨折患者行螺旋CT 扫描,层厚3 mm或5 mm,应用表面阴影显示法进行三维图像重建,用不同的旋转轴观察不同角度骨折的三维病变图像。若怀疑下颌骨骨折时,应用勾画删除技术对图像进行切割删除处理,以便单独显示下颌骨的三维图像。结果:螺旋CT三维重建能清楚显示复杂颌面骨折的立体解剖图像及与周围结构关系;应用勾画删除技术可清楚显示下颌骨骨折部位与移位,尤其是髁突骨折移位的方向和程度。结论:螺旋CT三维重建有利于确定复杂颌面骨折的程度与骨折的移位情况,有利于手术方案的设计与实施。

Clinical Application of Three-dimensional Spiral CT in the Complex Maxillofacial Fractures

Objective: The aim of this study was to evaluate the clinical application of the three_dimesional spiral CT in the complex maxillofacial fractures. Methods: A total of 26 patients with complex maxillofacial fractures were examined using spiral CT with the slice thickness of 3 to 5 mm. The surface shaded display (SSD) method was used for reconstruction of the three_dimensional (3D) images. The three_dimensional images of maxillofacial fractures were obtained by using various rotations. Before the three_dimensional images were reconstructed, the drawing and deleting way was used for these mandibular fractures.Results: The method demonstrated clearly the three_dimensional anatomy and their relationships of the fractures; using the drawing and deleting way, location and move condition of mandibular fractures, especially condylar fractures, were showed clearly.Conclusion: The three_dimensional CT is important in evaluating complex maxillofacial fractures. It could be used to demonstrate clearly locations and move conditions of complex maxillofacial fractures and operative plans.;