CT、MRI诊断早期股骨头缺血坏死的效果比较

胡善文; 王磊; 侯小丽; 王积贵; 罗新辉

doi:10.7619/jcmp.201907011

CT、MRI诊断早期股骨头缺血坏死的效果比较

CT versus MRI in diagnosis of early avascular necrosis of femoral head

摘要

摘要:
目的比较计算机断层扫描(CT)、磁共振成像(MRI)技术诊断早期股骨头缺血坏死的价值。
方法选取36例(47髋)股骨头缺血坏死患者, 均经手术病理检查确诊。所有患者均行CT、MRI检查。以手术结果为标准，判断CT、MRI诊断早期股骨头缺血坏死效果。
结果经手术病理证实，本组早期股骨头缺血坏死29例(38髋)。MRI对早期股骨头缺血坏死阳性检出率、敏感度、特异度分别为97.37%、97.30%、80.00%, 显著高于CT的78.95%、76.67%、11.76%(χ²=4.537、4.887、9.815, P=0.033、0.027、0.001)。
结论 CT、MRI诊断早期股骨头缺血坏死各有利弊，而相较于CT, MRI阳性检出率更高，敏感度、特异度更高。

Abstract:
Objective To compare the value of computed tomography (CT) and magnetic resonance imaging (MRI) in the diagnosis of early avascular necrosis of femoral head.
Methods Totally 36 patients (47 hips) with avascular necrosis of femoral head were selected and diagnosed by surgical pathological examination. All the patients underwent CT and MRI examinations respectively, and the results of surgery were used as the standard to judge the efficacy of CT and MRI in the diagnosis of early avascular necrosis of femoral head.
Results In this study, 29 patients with early avascular necrosis of femoral head (38 hips) were confirmed by surgical pathology. The positive detection rate, sensitivity and specificity of MRI for early avascular necrosis of femoral head were 97.37%, 97.30% and 80.00% respectively, which were higher than 78.95%, 76.67% and 11.76% of CT (χ²=4.537, 4.887, 9.815, P=0.033, 0.027, 0.001).
Conclusion CT and MRI have their own advantages and disadvantages in the diagnosis of early avascular necrosis of femoral head. Compared with CT, MRI has higher positive detection rate, sensitivity and specificity.

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