目的 探讨64排128层螺旋CT及其后处理技术在肋骨隐匿性骨折诊断中的应用价值。方法 回顾性分析126例可疑肋骨 骨折患者，所有病例行X线摄影及CT扫描并行重建后处理，包括容积再现、多平面重组、曲面重组，确定隐匿性骨 折数目，比较各种检查方法对肋骨隐匿性骨折检出率之间的差异。结果 126例患者共检出隐匿性骨折68处，容积再 现检出35处，多平面重组技术检出67处，曲面重组技术检出50处。结论 64排128层螺旋CT多平面重组、曲面重组技 术对肋骨隐匿性骨折的显示较容积再现技术更明确；临床工作中64排128层螺旋CT多平面重组、曲面重组及容积再 现技术的联合应用有利于提高肋骨隐匿性骨折的检出率。

Objective To explore the practical value of 64-row 128-slice spiral CT and its post-processing technique in the diagnosis of the occult rib fracture. Methods 126 cases of rib occult fractures in patients with rib trauma were analysised retrospectively.All the patients were diagnosised respectively by X ray film(DR) and 64-row 128-slice spiral CT as well as its post-processing technique such as VR, MPR, CPR.The differences in occult rib fracture with different examination methods were compared. Results Among the 126 patients, 68 occult fractures were detected in all, 35 occult fractures were detected by VR, 67 by MPR, and 50 by CPR. The detection rate of occult fracture by spiral CT were obviously higher than those of X ray film. Conclusion The MPR technique and CPR technique of spiral CT are more explicit in the detection of occult rib fracture than that of VR technique. In clinical work, the combined application of MPR, CPR and VR technique of 64-row 128-slice spiral CT is helpful to improve the detection rate of the occult rib fracture.