多层螺旋CT技术在颌面部牵张成骨术中的应用

目的探讨多层螺旋CT重建技术在颌面部牵张成骨中的应用方法和价值。方法在12例颌面部牵张成骨患者中应用多层螺旋CT扫描，进行三维及断层图像重建，测量骨牵开距离、牵开区骨厚度和骨密度等指标，考察牵引和成骨效果。结果多层螺旋CT三维重建图像清晰、细致，可各向旋转，有利于观察骨质和骨量；根据具体需要，可利用数据资料及Mimics等软件在个人电脑上重建断层图像，进行直观观察并可测量骨牵开区距离、厚度、密度等指标。12例患者的骨牵开距离均值为16.73 mm，效果良好。结论在多层螺旋CT薄层扫描基础上，可重建清晰、直观的三维及断层图像并可进行相关测量，该技术在颌面部牵张成骨观测中具有良好的应用前景。

Application of multislice helical computed tomography in maxillofacial distraction osteogenesis

Objective To develop the method and investigate the value of the application of multislice helical computed tomography(CT) in the maxillofacial distraction osteogenesis. Methods Twelve cases of maxillofacial distraction osteogenesis(3 in zygoma, 2 in maxilla, and 7 in mandible) were scanned by the multislice helical CT, then the reconstruction of three dimensional and fault image and the relative measurement were carried out to study the effect of distraction and osteogenesis. Results The three dimensional ...