摘要
目的 :探讨X线、CT及低场MRI在诊断早期股骨头缺血坏死中的价值。材料和方法 :对 83例X线疑为早期股骨头缺血坏死的患者行CT及低场MRI扫描 ,并进行统一分期、Kappa检验和Ridit统计。结果 :三种检查方法的Kappa一致性检验 ,K值均大于 0 4。Ridit敏感性试验结果为 , R(X线 ) =0 36 30 ; R(CT) =0 5 45 1; R (MRI) =0 5 918。 结论 :诊断早期股骨头缺血坏死 ,低场MRI比CT更具敏感性 ,X线平片则缺乏诊断意义。对CT尚不能确定的Ⅰ、Ⅱ期患者 ,选用低场MRI常规扫描可收到显著的诊断结果。
Purpose: To evaluate the value of X-ray plain, CT and low-field MRI in early avascular necrosis of femoral head. Materials and methods: 83 cases of early avascular necrosis of femoral head examed with X-ray plain, CT and MRI were analysed. Stage and Kappa test and Ridit sensitivity determination were completed. Result: All K values were above 0.4, it indicated a good uniformity. Ridit sensitivity defermination showed: (X-ray)=0 3630, (CT)=0 5451, (MRI)=0 5918. Conclusion: In order to diagnose of early avascular necrosis of femoral head, Low-field MRI was superior to CT in early diagnosis avascular necrosis of femoral head. X-ray plain had some limitations for showing early lesion of the desease.
出处
《中国医学影像学杂志》
CSCD
2000年第6期409-411,共3页
Chinese Journal of Medical Imaging
关键词
股骨头坏死
CT
MR
低场
诊断
avascular necrosis of femoral head
early
CT
Low-field MRI
