Methods Forty cases were examined with the X ray film, CT scan and 3D CT R. To evaluate their diagnostic value, the images of the three methods were compared.

• 方法 :4 0例骨关节损伤及椎管狭窄患者均行X线片、CT平扫及三维CT重建检查 ,比较以上三种检查方法 ,评估各自的诊断价值。