目的 探讨多层螺旋CT与MRI在肋骨骨折诊断价值对比分析。方法 对证实的46例病人，156处肋骨骨折病人进行MSCT 和MRI检查，然后对诊断结果进行对比分析。结果 其中MSCT检查诊断肋骨骨折148处，可疑5处，漏诊3处；MRI检查 诊断肋骨骨折155处，漏诊1处。结论 MSCT对肋骨骨折的诊断具有非常高的准确性，CT薄层原始图像及多种重建技 术能清晰显示骨皮质或骨小梁中断，部分病灶见到骨痂的形成、软组织肿胀；MRI是诊断肋骨骨折的有效补充，能 清晰显示骨折线、骨髓水肿、出血周围软组织肿胀。两种诊断方法的结合对肋骨骨折诊断具有重要的意义。

Objective To make the comparative analysis of the results of Multilayer Spiral CT and magnetic resonance imaging (MRI) in the diagnosis of Rib Fracture. Methods Choose 46 patients with 156 rib fractures confirmed formerly in total, then diagnose them with Multilayer Spiral CT and MRI separately. Finally compare the results. Results 148 rib fractures was diagnosed by MSCT, with 5 suspicious cases, 3 missed diagnosed cases. 155 rib fractures was diagnosed by MRI, with one case missed diagnosed. Conclusion The diagnose accordance rate of rib fracture was high in MSCT. The rupture of the bone cortex and trabecula can be clearly identified with the applications of thin slices and multiple reconstruction techniques of MSCT. Besides, the formation of the callus and soft tissue swelling could be also discovered in some cases. Acting as an important supplement diagnosing rib fracture, MRI plays a very significant role in displaying the fracture lines, bone marrow edema, hemorrhage and soft tissue swelling. It is of great importance that the combined examination of MSCT and MRI promotes the diagnosis of rib fracture.