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颌面部病变是口腔外科的常见病,CT的横断面图像避开了组织的重叠,可以较好的显示出颌面部骨折及肿瘤性病变。但颌面部骨折时,仅用CT的横断面图像以难以直观立体地反应出骨折的整体情况。螺旋CT三维重建（three dimensionCT,3DCT）的应用是对CT的横断面图像一种很好的补充,在临床应用中显示出一定优势[1,2]。本文主要探讨多层螺旋CT（multislice spiral CT,MSCT）三维成像在颌面部病变中的优劣势及其应用价值。
Maxillofacial lesions is a common disease of oral surgery, CT cross-sectional images to avoid the overlap of the tissue, you can better show the maxillofacial fractures and neoplastic lesions. However, in the case of maxillofacial fractures, only the CT cross-sectional images are difficult to intuitively and stereoscopically reflect the overall situation of the fracture. The application of three-dimensional CT (3DCT) is a good complement to the CT cross-sectional images, which shows some advantages in clinical application [1,2]. This article focuses on the advantages and disadvantages of three-dimensional imaging of multislice spiral CT (MSCT) in maxillofacial lesions and its application value.