低场强MRI对脊椎转移瘤的诊断及鉴别诊断

目的:为了提高脊椎转移瘤诊断及其与其他椎体病变的鉴别诊断水平。方法:回顾性分析经病理证实的转移瘤79例和误诊病例15例的MRI特点,归纳其影像表现的差异。结果:79例转移瘤中,累及椎体125个,多为跳跃式分布;累及附件骨92个,占73.6%;椎体破坏变形81个,占64.8%;椎间盘均无变化;有软组织肿块22例(17.6%),软组织肿块常以破坏区为中心生长。T1WI均呈低信号,T2WI信号改变可以多种多样。结论:MRI检查在诊断脊椎转移瘤及与其他脊椎病变的鉴别诊断中更敏感、更具特异性。

The diagnosis and differential diagnosis of the spinal metastasis in low field MRI

Objective:To investigate the MRI features and improve differential diagnosis of the spinal metastasis.Methods: The MRI features of 79 cases of the spinal metastasis were analysed retrospectively and concluded the different MRI features.Results: There were 79 cases in 125 vertebral bodies with metastasis and those lesions usually appeared "jump sign";92 appendixes were involved(73.6%);81 vertebral bodies were destroyed and metamorphosed(64.8%).All the ntervertebral discs didn't been involved.There were soft-tissue masses in 22 cases(17.6%).Soft tissue mass was always around the focus of destruction.MRI signal of the lesions in vertebral body demonstrated decreased on T1WI and complex variation on T2WI.Conclusion: The low field MRI is sensitivity in detecting the spinal metastasis and helpful in differential diagnosis in spinal metastasis.