早期股骨头缺血坏死的CT与MRI诊断对比研究

Comparative study between CT and MRI diagnosis in early ischemic necrosis of femoral head

目的比较CT与MRI在早期股骨头缺血坏死诊断中的价值。方法回顾性分析本院2016年1~12月收治的60例确诊为早期股骨头缺血坏死的患者作为研究对象,分别予以CT及MRI诊断,比较两种诊断的征象显示率。结果 MRI诊断Ⅰ~Ⅱ期股骨头缺血坏死的检出率为91.38%,高于CT诊断的63.79%,差异有统计学意义(P<0.05)。两种检测方法诊断Ⅲ、Ⅳ期股骨头缺血坏死的检出率比较,差异无统计学意义(P>0.05)。在Ⅰ~Ⅱ期股骨头坏死诊断中,MRI的骨髓水肿、线样征,骨小梁模糊显示率均高于CT诊断,差异有统计学意义(P<0.05)。两种检测方法的局部囊变显示率比较,差异无统计学意义(P>0.05)。结论早期股骨头缺血坏死的MRI诊断显示率显著高于CT诊断,值得临床推广应用。

Objective To compare the value of CT and MRI in the diagnosis of early ischemic necrosis of femoral head. Methods 60 patients with early ischemic necrosis of femoral head treated in our hospital from January 2016 to Decem- ber 2016 were selected and diagnosed by CT or MRI.The display ratio of signs was compared between the two groups. Results The detection ratio of ischemic necrosis of femoral head at stage Ⅰ to Ⅱ of MRI was 91.38%,which was higher than 63.79% of CT,with significant difference （P〈0.05）.There was no significant difference between MRI and CT in the detection ratio of ischemic necrosis of femoral head at stage Ⅲ and Ⅳ （P〉0.05）.In the diagnosis of ischemic necrosis of femoral head at stage Ⅰ to Ⅱ ,the display rates of bone marrow edema,linear sign;and bone trabecula haziness of MRI was higher than that of CT,with significant difference （P〈0.05）.There was no significant difference in the display rate of local cystic lesions between MRI and CT （P〉0.05）.Conclusion The display rate of MRI is significantly higher than that of CT in early ischemic necrosis of femoral head,which is worthy of clinical promotion and application.