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目的探讨急性脊髓炎的脊髓ＭＲＩ表现特点，以及ＭＲＩ是否有助于本病的诊断。方法对２１例急性脊髓炎患者进行了脊髓ＭＲＩ矢状面和横轴面扫描。结果本病以上胸段及下颈段受累多见，部分病例可无异常，大部分病例病变区范围大，ＭＲＩ显示的病变上界高于临床感觉障碍平面的上界，脊髓呈均匀一致肿胀，Ｔ２加权像呈斑片状或条索状高信号，增强扫描可无强化或轻度斑点状强化。结论认为ＭＲＩ对本病的诊断与鉴别诊断有其特殊的价值，是其它检查不能替代的。
Objective To investigate the features of spinal cord MRI in acute myelitis and whether MRI can contribute to the diagnosis of this disease. Methods Twenty-one patients with acute myelitis were scanned by MRI on the sagittal plane and transverse plane. Results The above lesions were more common in the thoracic and lower cervical segments. Some of the cases were normal. Most of the cases showed a wide range of lesions. The upper bound of the lesions showed higher than the upper bound of the clinical sensory disturbances. The spinal cord showed uniform and consistent swelling, T2-weighted images were patchy or cord-like high signal enhancement scan can be no enhanced or mild spot-like enhancement. Conclusions that MRI diagnosis of the disease and differential diagnosis has its special value, is that other tests can not be replaced.