探讨多层螺旋CT结合磁共振成像多序列对应力性骨折的诊断价值研究

Study On the Diagnostic Value of Multi-slice Spiral CT Post-Processing Combined with Magnetic Resonance Imaging Multi-sequence in the Diagnosis of Stress Fractures

目的探讨多层螺旋CT结合磁共振成像多序列对应力性骨折的诊断价值。方法选取76例应力性骨折患者,对患者进行多层螺旋CT检查和磁共振成像检查,观察多层螺旋CT检查和磁共振成像检查的影像学特征,进行应力性损伤分级,比较多层螺旋CT检查和磁共振成像检查单独及联合诊断应力性骨折的灵敏度、特异度、准确率、阳性预测值、阴性预测值。结果多层螺旋CT检查应力性骨折的灵敏度、特异度、准确率为59.21%、67.11%、69.74%,磁共振成像检查应力性骨折的灵敏度、特异度、准确率为76.32%、71.05%、78.95%,二者联合检查应力性骨折的灵敏度、特异度、准确率为90.79%、81.58%、92.11%,联合检查的诊断效能高于单项检查差异有统计学意义(P<0.05),多层螺旋CT检查出关节腔积液,未检查出骨髓水肿、关节面软骨损伤、半月板损伤、韧带损伤,二者联合检查对关节病变的检出率显著高于单项检查差异有统计学意义(P<0.05)。结论多层螺旋CT结合磁共振检查多序列对应力性骨折有更高的诊断效能,且对关节病变有较高的检出率。

Objective To investigate the diagnostic value of multi-slice spiral CT post-processing combined with magnetic resonance imaging multi-sequence in the diagnosis of stress fractures.Methods A total of 76 patients with stress fractures were selected,and the patients were examined by multi-slice spiral CT and magnetic resonance imaging,and the imaging characteristics of multi-slice spiral CT and magnetic resonance imaging were observed.The characteristics ofstress injury were classified,andthe sensitivity,specificity,accuracy,positive predictive value and negative predictive value of multi-slice spiral CT examination and magnetic resonance imaging examination alone and in combination were compared in diagnosing stress fractures.Results The sensitivity,specificity and accuracy of multi-slice spiral CT were 59.21%,67.11%and 69.74%in detecting stress fractures,while the sensitivity,specificity and accuracy of MRI in detecting stress fractures were 76.32%,71.05%and 78.95%,the sensitivity,specificity,and accuracy of the two combined detection of stress fractures were 90.79%,81.58%and 92.11%.The diagnostic efficiency of the combined examination was higher than that of the single examination(P<0.05).Multi-slice spiral CT detected the joint cavity.Effusion,bone marrow edema,articular cartilage damage,meniscus damage,and ligament damage were not detected.The detection rate of joint lesions by the combined examination was significantly higher than that by single examination(P<0.05).Conclusion Multi-slice spiral CT post-processing combined with MRI multi-sequence has higher diagnostic performance for stress fractures,and has a higher detection rate for joint lesions.