CT与MRI诊断早期股骨头缺血坏死比较

Comparison of CT and MRI in the diagnosis of early avascular necrosis of femoral head

目的:比较CT与MRI诊断早期股骨头缺血坏死的效果。方法:收集2016年5月至2018年5月手术治疗的80例股骨头缺血坏死患者的临床资料,比较CT与MRI诊断骨头缺血坏死的效果。结果:MRI对股骨头缺血坏死的检出率为95.00%(76/80),CT为88.75%(71/80),但组间差异无统计学意义(P>0.05)。MRI检查诊断早期股骨头缺血坏死敏感度、特异度、准确率、阳性预测值、阴性预测值分别为95.83%、93.75%、95.00%、95.83%和93.75%,CT分别为70.83%、75.00%、72.50%、80.95%和63.16%,组间差异有统计学意义(P<0.05)。结论:MRI诊断早期股骨头缺血坏死效果优于CT,可作为优选诊断手段。

Objective: To compare the effect of CT and MRI in the diagnosis of early avascular necrosis of femoral head. Methods: The clinical data of 80 patients with avascular necrosis of femoral head that underwent surgical treatment in our hospital from May 2016 to May 2018 were collected to compare the effect of CT and MRI in the diagnosis of bone ischemic necrosis. Results: The detection rates of avascular necrosis of femoral head by MRI were 95.00%(76/80) and by CT 88.75%(71/80), but there was no significant difference between the two groups(P>0.05). The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of MRI examination in the diagnosis of early avascular necrosis of femoral head were 95.83%, 93.75%, 95.00%, 95.83% and 93.75%, respectively, those of CT were 70.83%, 75.00%, 72.50%, 80.95% and 63.16% respectively, and there was significant difference between the two groups(P<0.05). Conclusion: MRI is superior to CT in the diagnosis of early avascular necrosis of femoral head, and can be used as an optimal diagnostic method.