MRI诊断急性颈髓外伤35例

Diagnosis of MR imaging for 35 patients with acute cervical spinal cord injury

目的 探讨 MRI对急性颈髓损伤的诊断作用 ,分析MRI表现与临床预后的关系 .方法 35例急性颈髓损伤患者 1wk内 MRI扫描 ,采用矢状位及横轴位 T1WI和 T2 WI成像 .结果 MRI表现为形态学异常达 10 0 % ,包括颈髓肿胀、扭曲和断裂 ;信号异常占 10 0 % ,如 T1WI低信号 ,T2 WI高信号的水肿、挫伤 ,信号不均匀的出血 . MRI可准确判断颈髓损伤的长度 ,横截面范围位于灰质、白质或全脊髓 .此外MRI还可显示椎体移位 ,后纵韧带断裂 ,脊髓周围出血和脑脊液漏等 .结论 MRI已成为评价颈髓损伤程度的首选方法 ,损伤定位与临床有准确的对应关系 ,根据 MRI表现可预测患者的预后 .

AIM To analyse MRI value for acute cervical spinal cord injury, and the relationship between MRI appearance and clinical forecasting. METHODS Thirty five patients with cervical spinal cord injury were evaluated by MRI scanning in a week with sagittal and axial T1WI and T2WI. RESULTS Morphological abnormalities of MRI were 100% including spinal cord enlargement, turn round and disruption. Pathological signals of MRI were 100%, i. e spinal cord edema and trauma presentsed low signal in T1WI and high signal in T2WI; hemorrhage was inhomogeneous signal. MRI was not only able to decide accurately the length, size and location of the gray or white matter of spinal cord injury but also to display the dislocation of vertebrae, disruption ofposterior longitudinal ligament, hemorrhage of peripheral spinal cord or leak of CSF. CONCLUSION MRI is the method of choice for diagnosing the degree of cervical spinal cord injury. There is coordination with injury position and clinical appearances. Forecasting of patients recovery can be made by MRI sighs.