论文部分内容阅读
目的 探讨多组织三维重建方法在寰枕和寰枢关节病变中的诊断作用。方法 10例正常志愿者 ,42例寰枕或者寰枢关节畸形或外伤者 ,经螺旋CT扫描 ,对枕骨、寰椎和枢椎用同样阈值和灰阶行表面遮盖三维重建 (SSD) ;另对枕骨、寰椎和枢椎单独不同灰阶三维重建 ,再行三维多组织重建 (3DMT)。然后比较两者图像。结果 SSD和 3DMT均清楚显示出寰枕和寰枢之间的解剖结构关系 ,3DMT还能显示单个结构的内外表结构 ,避免相邻结构的重叠和遮挡。 3DMT清楚显示了寰枕融合畸形 ,关节的旋转脱位和椎体的骨折。结论 三维重建在寰枕和寰枢关节病变的诊断中有着重要的意义 ,多组织三维重建技术较常规的三维重建更具有优越性
Objective To investigate the diagnostic value of multi-tissue three-dimensional reconstruction in atlantoaxial and atlantoaxial joint disease. Methods Ten patients with normal volunteers and 42 patients with atlantoaxial or atlantoaxial joint deformity or trauma were examined by spiral CT scans, and the occipital, atlantoaxial and vertebral bodies were covered with three-dimensional reconstruction (SSD) with the same threshold and gray scale. Occipital, atlas and axial separate grayscale three-dimensional reconstruction, and then three-dimensional multi-tissue reconstruction (3DMT). Then compare the two images. Results Both SSD and 3DMT clearly showed the anatomical relationship between the atlantoaxial and atlantoaxial. 3DMT could also display the internal and external structures of individual structures, avoiding the overlap and occlusion of adjacent structures. 3DMT clearly shows atlanto-occipital fusion deformity, rotational dislocation of the joint and vertebral fractures. Conclusion Three-dimensional reconstruction is of great significance in the diagnosis of atlantoaxial and atlantoaxial joint disease. The multi-tissue three-dimensional reconstruction technique is superior to conventional three-dimensional reconstruction