[摘要] 目的 分析和探讨股骨头缺血性坏死的CT及MRI诊断价值。 方法 以我院2015年1月～2017年1月收治的50例(70髋)股骨头缺血性坏死病例作为观察对象，分析和探讨CT及MRI检查诊断股骨头缺血性坏死的表现及阳性率。 结果 50例股骨头缺血坏死患者经MRI检查发现Ⅰ期30例、Ⅱ期18例、Ⅲ期2例，MRI检查诊断的阳性率为 96.00%。CT 检查发现Ⅰ、Ⅱ、Ⅲ期分别为 17例、19例、14例，检查诊断阳性率为 72.00%。MRI 检查诊断的阳性率显著高于CT 检查诊断的阳性率，差异有统计学意义(P<0.05)。 结论 CT、MRI均为诊断股骨头缺血性坏死的重要的检查方法，MRI较CT诊断准确率更高。

    [关键词] 股骨头缺血性坏死；CT；MRI；诊断价值

    [中图分类号] R445.2；R681.8；R816.8 [文献标识码] B [文章编号] 1673-9701(2017)22-0090-03

    [Abstract] Objective To analyze and explore the diagnostic value of CT and MRI in avascular necrosis of femoral head. Methods 50 cases(70 hips) of avascular necrosis of femoral head treated in our hospital in from January 2015 to January 2017 were chosen as observation objects. The performance and positive rate of CT and MRI in the diagnosis of femoral head ischemic necrosis were analyzed and discussed. Results There were 30 cases of stageⅠ ......