96例早期股骨头缺血性坏死应用ECT和MR诊断比较

A comparison of diagnostic capacity between ECT and MR in patients with early avascular becrosis of femoral head

目的比较发射型计算机断层扫描(ECT)与磁共振(MR)在股骨头缺血性坏死早期诊断价值。方法回顾性收集2016年6月至2019年6月本院收治的96例疑似早期股骨头缺血性坏死(ANFH)患者临床资料。对比患者ECT和MR检查的诊断指标,包括灵敏度、特异度、正确诊断指数等。结果96例疑似病例中,共有80例确诊为早期ANFH。ECT和MR对早期ANFH检查与病理诊断相比,差异均不显著(P>0.05)。ECT和MR检查早期ANFH的灵敏度分别为92.3%和95.0%(P>0.05),而MR特异度(80.0%)和正确诊断指数(0.75)显著高于ECT(特异度为55.6%,正确诊断指数为0.48)(P<0.05)。结论ECT与MR在早期ANFH临床检查和诊断中,均有较高的灵敏度,MR的特异度和诊断正确指数优于ECT,更适用于临床应用。

Objective To investigate the differentially diagnostic ability of Emissive computed tomography(ECT)and magnetic resonance(MR)in patients with early avascular necrosis of the femoral head(ANFH).Methods A total of 96 patients suspected with early avascular necrosis of femoral head from June 2016 to June 2019 were included in this study.The different diagnostic value of ECT and MR was compared on the basis of sensitivity,specificity and correct diagnostic index.Results Among the 96 suspected patients,80 were diagnosed as early ANFH.There was no statistical significance was found between ECT or MR versus pathological diagnosis for early ANFH(P>0.05).Sensitivity in ECT and MR for identifying early ANFH were 92.3%and 95.0%,respectively(P>0.05).Nevertheless,in terms of specificity and correct diagnostic index,MR imaging(80.0%and 0.75,respectively)was significantly higher than ECT(55.6%and 0.48,respectively)(P<0.05).Conclusions Both ECT and MR showed a high sensitivity in detecting and diagnosing early ANFH.However,our study demonstrated that MR is superior to ECT with respect to the specificity and correct diagnostic index.Therefore,MR is a favorbale examination method for early ANFH in the routine clinical basis.