膝部隐性骨折的MRI诊断(35例报告)

目的 探讨膝部隐性骨折的MRI表现，评价MRI检查的诊断价值。方法 35例膝部外伤病例在外伤后7天内行MRI检查，检查序列包括T1WI、T2WI与T2^*WI。结果 35例共49处膝部隐性骨折。FSE T2WI与FE T2^*WI序列对病变检出率较高，分别为100％及93．88％。隐性骨折以胫骨上端与股骨下端最多见。21例合并膝部韧带损伤。12例有膝部损伤其他征象。结论 MRI能敏感显示膝部隐性骨折及合并的其他表现，对于疑为膝部隐性骨折的病例应列为首选检查。

MRI Diagnosis of Subtle Fractures of Knee:A Report of 35 Cases

Objective To probe the MRI findings of subtle fracture of knee and evaluate the value of MR imaging in diagnosing it. Methods Thirty-five patients were scanned within 7 days after trauma.The sequences included SE T1WI,FSE T2WI and FE T2*WI. Results Forty-nine subtle fractures were found in 35 cases.The detective rates of FSE T2WI and FE T2*WI were 100% and 93.88% respectively.The upper part of tibia and lower part of fermur were most commonly affected. Ligaments of knee were injuried in 21 patients.We can also found other injuries in 12 cases. Conclusion MRI is sensitive in detecting subtle fracture of knee and associated injuries.As to suspected patients,MRI should be the modality of first choice.