不同影像学检查在颌骨骨折中应用

The Application of Different X-ray Examinations in the Diagnosis of Jaws Fracture.

目的:研究常规X线、二维CT和三维CT在颌骨骨折诊断中的优缺点。方法:对125例不同类型的上、下颌骨骨折的常规X线、二维CT和三维CT的显示情况,以及手术结果进行对照和分析。结果:对于下颌骨体部、角部和升支骨折,3种影像学都能很好的显示,对于髁状突和喙突骨折,三维CT检查优于常规X线和二维CT;常规X线显示上颌骨骨折较差,而二维CT和三维CT显示的准确性比较接近。三维CT可以直观和立体的显示颌骨骨折线。结论:3种影像学检查各有优缺点,为提高骨折显示的准确率,3种方法结合使用是必要的。

Objective： To evaluate the advantage and disadvantage of conventional X -ray plain film ,2D -CT and 3D -CT in the diagnosis of jaws fractures. Methods： 125 cases of jaws fractures were examed by the conventional X - ray plain film, 2D - CT and 3D - CT before operation. The results of three methods were compared with each other and with the operation findings. Results： Fractures in body, angle and ascending branch of mandible could be showed fine by all these imaging methods. 3D - CT was better than 2D - CT and conventional X - ray plain film in the diagnosis of fractures in condyle and coronoid process. Conventional X - ray plain film was poor in the diagnosis of the maxillary fractures. 2D - CT and 3D - CT was similar in the diagnosis of the maxillary fractures. 3D - CT showed the jaws fractures directly and stereoscopicly. Conclusion：Each of these three methods has its advantage and disadvantage in showing jaws fractures. In order to increase the accurate rate of diagnosis, a combination of three methods is necessary.