急性横贯性脊髓炎的MRI诊断

目的：研究急性横贯性脊同须炎的MRI表现特征。方法：对临床及MRI确诊的11例患者资料进行总结，分析其MRIT1WI、T2WI及GD-DTPA增强扫描后的具体表现。结果：11例患者中1例位于颈延髓，7例位于胸髓及颈髓下端，2例累及颈胸腰髓，1例位于脊髓圆锥。T2WI脊髓中央呈长T2高信号，平均长度为5个脊髓节段，占据脊髓2/3以上横断面积。T1WI相脊髓轻度增粗，增强后脊髓呈间断性条状及斑片状强化，且表面强化为主，无占位效应。结论：MRI是检查该病的最佳影像学检查方法。

MRI diagnosis of acute transverse myelitis

Objective: To determine the MRI characteristics of acute transverse myelitis. Methods: The clinical records of 11 cases of acute transverse myelitis were reviewed and their specific appearances in T 1WI,T 2WI and contrast enhancement pattern with intravenous injection of GD DTPA were also analyzed. Results: Of the 11 cases of acute transverse myelitis 1 case affected the cervical cord, 7 cases affectded mainly the thoracic cord, 2 cases affected the whole spinal cord and 1 case affected the lumbar cord. The lesions manifested as long T 2 high signal intensity inside the spinal cord, stretching over 5 spinal segments on average on saggital images and occupying more than 2/3 of the transverse area. In T 1WI the spinal cords enlarged a little with smooth margin. After GD DTPA injection there were interrupted patchy or/and linear enhancement of the lesion which occurred mainly in the outportion of the spinal cord but lacking space occupying effect. Conclusions: MRI is the best imaging method for the examination of this disease and can also be used in the follow up examinations.