磁共振诊断股骨头缺血性坏死的有效性分析

Analysis of the Effectiveness of MRI in Diagnosis of Avascular Necrosis of Femoral Head

目的:探究磁共振诊断股骨头缺血性坏死的有效性。方法:采用回顾性方法分析,选取2016年1月~2020年5月自本院收治的82例股骨头缺血性坏死患者的临床资料,分别给予CT与磁共振检查,将手术诊断结果作为金标准,比较CT、磁共振诊断准确率、灵敏度、特异度,Kappa检验CT、磁共振与金标准的一致性,比较CT、磁共振对股骨头缺血性坏死分期比较。结果:磁共振检查股骨头缺血性坏死的准确率(97.56%)明显高于CT(86.59%),有显著差异(P<0.05)。磁共振诊断灵敏度(100.00%)、特异度(97.53%)均高于CT(0、87.65%),有显著差异(P<0.05),CT与手术诊断结果的一致性一般(Kappa值=0.524),磁共振与手术诊断结果的一致性较好(Kappa值=0.788)。磁共振对股骨头缺血性坏死Ⅰ期(96.88%)、Ⅱ期(97.22%)、Ⅲ期(100.00%)、Ⅳ期(100.00%)的检出准确率明显高于CT(93.75%、86.11%、75.00%、50.00%),经比较分析,无统计学意义(P>0.05)。结论:磁共振有着较高的诊断准确率,且对分型更加准确。

Objective:To explore the effectiveness of MRI in the diagnosis of avascular necrosis of the femoral head.Methods:Using retrospective analysis,the clinical data of 82 patients with avascular necrosis of the femoral head admitted in our hospital from January 2016 to May 2020 were selected,and CT and MRI were performed respectively.The surgical diagnosis results were used as the gold standard.Compare the diagnostic accuracy,sensitivity,and specificity of CT and MRI.Kappa tests the consistency of CT and MRI with the gold standard.Compare CT and MRI staging of avascular necrosis of the femoral head.Results:The accuracy of magnetic resonance imaging for avascular necrosis of the femoral head(97.56%)was significantly higher than that of CT(86.59%),and there was a significant difference(P<0.05).The sensitivity(100.00%)and specificity(97.53%)of MRI diagnosis were higher than those of CT(0,87.65%),with significant difference(P<0.05).The consistency between CT and surgical diagnosis was general(Kappa value=0.524),MRI and surgical diagnosis results are in good agreement(Kappa value=0.788).The accuracy of detection accuracy(100.00%)of stage Ⅰ(96.88%),stage Ⅱ(97.22%),stage Ⅲ(100.00%)and stage Ⅳ of avascular necrosis of the femoral head by MRI was significantly higher than that of CT(93.75%,86.11%,75.00%,50.00%),after comparative analysis,no statistical significance(P>0.05).Conclusion:MRI has a higher diagnostic accuracy and is more accurate in typing.