螺旋CT多平面重建在诊断寰枢椎损伤中的应用

目的：探讨螺旋CT多平面重建（MPR）在寰枢椎外伤诊断中的作用，提高对寰枢椎损伤的诊断率。方法：对30例寰枢椎损伤病人进行螺旋CT薄层扫描和MPR、MIP、SSD重建进行比较，分析并评价其对寰枢椎结构的显示效果。结果：单纯寰枢椎脱位9例；枢椎齿状突骨折12例，枢椎骨折4例，其中骨折伴寰枢椎脱位8例，寰椎前、后弓骨折共5例。结论：MPR可准确测量碎骨片大小、移位、方向和程度，但在立体感和整体感方面较SSD、MIP差，笔者认为三维重建中，MPR应用范围最广，显示效果也最好，着重推荐采用MPR和SSD、MIP两种技术相结合的方法，对寰枢椎损伤可达到最满意的诊断目的。

Multi-planar Reconstruction (MPR) with Spiral CT in Diagnosing Atlanto-axial Injury

Objective： To evaluate spiral CT multi-planar reconstruction （MPR） in diagnosing atlanto-axial injuries to improve the diagnostic rate. Method： 30 cases of atlanto-axial injury with thin spiral CT scan comparing with MPR, MIP, SSD reconstruction. Analysing and evaluatiing its effects in atlanto-axial structure . Result. 9 cases of atlanto-axial dislocation ; 12 cases of odontoid fracture ; 4 cases of atlanto-axial fractures, Fracture with atlanto-axial dislocation in 8 cases , Atlas before and after a total of five cases of arch fracture. Conclusion： MPR can accurately measure the size of fragments of bone , displacement, direction and degree, However, in third-dimension and the wholeness sense less than SSD, MIP. We believe that in the third-dimensional reconstruction , the applications of MPR is the widest , and its results is the best. Focus on recommended method that combining MPR and SSD, MIP. which can achieve the most satisfactory diagnostic purposes in atlanta-axial injuries.