【摘要】 目的：探讨ＭＲＩ不同序列对急性脊髓损伤模型中的病变显示价值。方法：对１２只中国家兔建立脊髓液压损伤模型，伤后７２ｈ内行ＭＲＩ扫描，分析比较自旋回波、小角度翻转激发、快速自旋回波序列于创区脊髓的影像学表现。结果：脊髓损伤后于创区脊髓ＭＲ表现呈高低信号混杂、结构紊乱。其中快速自旋回波的Ｔ２ＷＩ对于创区脊髓显示的准确率（９０％）及创区脊髓信号强度差值（３７２±２２．６８）均高于其他几种序列（Ｐ＜０．０１）。结论：快速自旋回波的Ｔ２ＷＩ序列矢状面可显示创区脊髓不同信号表现，横断面可显示创区中心结构混杂。更多还原

【Abstract】 Objective:To analyze the ability of different MRI sequences for evaluation of experimental spinal cord injury.Methods:12 rabbits with induced spinal cord injury model by fluid percussion were performed 72h later MR scanning with SE(spin echo),STIR(short time inverse recovery),FLASH(flip low angle shoot)and TSE(Turbo spin echo)sequences.The imaging findings on different sequences were analyzed and compared.Results:MRI of the spinal cord injury showed mixed signal and deranged structure of the injured spinal cord. TSE T2WI was the highest in the diagnostic accuracy (90%) and provided high contrast(372±22.68) between the normal and injured spinal cord among those sequences.Conclusion:TSE T2WI can document different signal intensity on sagittal plane and the derangement of the central structure of the injured spinal cord on the axial plane.更多还原