弥漫性轴索损伤的临床及MRI分析

Analysis of MRI Clinical Features in Diffuse Axonal Injury

分析弥漫性轴索损伤 (DAI)的临床及MRI特征。材料和方法 :搜集经临床确诊的DAI38例 ,均做了常规MRI检查。结果 :38例中共发现52个病灶 ,大脑白质31个病灶 ,胼胝体9个病灶 ,小脑4个病灶 ,桥脑5个病灶 ,大脑脚2个病灶 ,延髓1个病灶。T1WI病灶呈低信号 ,T2WI为高信号。结论 :MRI对评价DAI很有价值。T2WI显示水肿病变较好 ,对于早期小出血灶 。

Purpose:To analyse the clinic and the MR imaging features of the diffuse axonal injury.Materials and Methods:MRI scans of38patients with diffuse axonal injury diagnosed by clinic were analysed retroˉspectively.Results:Totally52lesions were found in38cases in cluding31lesions in cerebral white matter;9lesions in corpus callosum,4lesions in cerebellum,5lesions in pons,2lesions in cerebral peˉduncle1lesion in medulla oblongata.The lesions were appeared hypointense on T 1 weighted images and hyperintense on T 2 weighted images.Conclusion:MR imaging was extremely valuble in evaluating of diffuse axonal injury.T 2 weighted images were superior on showing lesion of the edema.It is necessary that small blooding lesions in early stage were diagnosed with combining T 1 weighted images and T 2 weighted images.