摘要
目的探讨急性播散性脑脊髓炎(ADEM)MRI表现。资料和方法回顾性分析符合临床诊断标准的急性播散性脑脊髓炎患者13例。结果病变主要位于大脑白质或脊髓内,多发且分布不对称,均表现为T1WI低信号,T2WI高信号,5例在侧脑室旁可见“垂直脱鞘征”,6例急性期见灶周水肿,注射Gd-DTPA后9例见异常强化。10例复查见异常信号缩小且数目减少。结论急性播散性脑脊髓炎的MRI表现有定特征性,MRI具有重要诊断价值。
Objective To discuss MR findings of acute disseminated encephalomyelitis （ADEM）. Materials and Methods 13 cases of clinically proven ADEM were retrospectively reviewed, Results Multiple and asymmetrical lesions were located in cerebral white matter or in spinal cord. The lesions were presented as low signal on T1WI and high signal on T2WI .＂Perpendicular sign＂by lateral ventricle was seen in 5 cases. Peripheral edema was seen in 6 cases during acute stage, After injection of Gd-DTPA, marked enhancement was seen in 9 cases. Follow up MR imaging showed that the abnormal signals decreased in both size and number in 10 cases. Conclusion ADEM carries certain characteristics on MRI. MRI is of great value in its diagnosis.
出处
《中国CT和MRI杂志》
2007年第1期4-6,共3页
Chinese Journal of CT and MRI
关键词
急性播散性脑脊髓炎
磁共振成像
脱髓鞘疾病
Acute disseminated encephalomyelitis
Magnetic resonance imaging
Demyelinating diseases
