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目的：评价ＨＲＣＴ对诊断早期股骨头缺血坏死的作用及价值。材料与方法：１００例拟诊病人行常规ＣＴ扫描和ＨＲＣＴ扫描，两种检查方法对比研究。结果：１００例中７８例为股骨头坏死，其中ＨＲＣＴ诊断早期股骨头坏死５３例，常规ＣＴ扫描为３０例。结论：ＨＲＣＴ扫描诊断早期股骨头坏死，敏感性及准确性明显高于常规ＣＴ扫描。
Objective: To evaluate the role and value of HRCT in the diagnosis of early avascular necrosis of femoral head. MATERIALS AND METHODS: One hundred cases of suspected patients underwent routine CT scan and HRCT scan. The two methods were compared. Results: Of the 100 cases, 78 were avascular necrosis of the femoral head. Among them, 53 were diagnosed as early osteonecrosis of the femoral head by HRCT, and 30 were diagnosed by conventional CT scan. Conclusion: HRCT scan for the diagnosis of early osteonecrosis of the femoral head is more sensitive and accurate than conventional CT scan.