三维影像学检查在髋臼骨折诊断和治疗中的应用

目的探讨三维影像学检查在髋臼骨折诊断和治疗中的应用及价值。方法自2002年6月～2004年10月对56例髋臼骨折患者进行螺旋CT扫描,通过三维表面遮盖法(SSD)及容积重建技术(VRT)观察骨折的类型及详细情况,其中15例进行了内固定术后髋臼复位情况的疗效观察。结果56例中SSD显示了53例骨折,3例未全部显示骨折线;SSD显示骨折的立体效果优于VRT,VRT在显示不明显骨折及细碎骨折块方面优于SSD,并且可以立体直观的显示术后髋臼的复位固定效果。结论三维CT成像技术对髋臼骨折的诊断、治疗方法及手术固定方案的选择均具有不可替代的重要价值,VRT对术后疗效的判断也具有一定价值。

Application of spiral CT in treatment of acetabular fractures

Objective To explore the application of three dimensional reconstructive technique of spiral CT in the treatment of acetabular fractures. Methods 56 cases of acetabular fractures were examined with spiral CT from June, 2002 to October, 2004. Surface shaded display (SSD) and volume rendering technique (VRT) were used to observe the details of acetabular fractures. 15 cases of them were observed after internal fixation. Results The fractures were detected in 53 cases by SSD, but the whole fracture line was not observed in 3 cases. SSD was superior to VRT in observing the three dimensional status. VRT was superior to SSD in that it could show all the fractures and tiny fracture fragments. VRT could be used to observe directly the post-operational results. Conclusions SSD and VRT of spiral CT are effective methods to diagnose complex acetabular fractures and to determine treatment protocols. VRT can also be used to judge the results of the operation.