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目的:讨论脊椎及椎管内血管瘤的平片及MRI特征.材料与方法:经手术和病理证实的脊椎及椎管内血管瘤共6例.MRI检查采用ASM－060超导型MR机,SE序列,均作平扫及增强扫描.平片为局部脊柱正侧位点片.结果:6例均发生于胸段,分3类:(1)椎体血管瘤累及硬膜外;(2)椎板血管瘤累及硬膜外;(3)单纯硬膜外血管瘤.血管瘤的MRI表现:T1加权像呈低信号,T2加权像呈高信号,增强后明显强化.其平片特征:累及椎体者椎体呈栅栏状改变.结论:MRI具有良好的软组织分辨力,可清楚显示脊椎及椎管内血管瘤的大小、范围,以及椎体、椎板的改变.平片不能直接显示血管瘤本身,但平片的椎体栅栏状改变可帮助诊断累及椎体之血管瘤.“,”Objective: To study the MRI and Xray features of the spinal and intravertebral hemangioma.Materials and Methods:Plain and contrastenhanced MR scanning (ASM 060 superconductive MR unit) using SE sequence was performed in 6 cases with surgically and pathologically proved spinal and intravertebral hemangiomas. Spot films of local spinal column in both AP and lateral position were also taken.Results:In all 6 cases, the tumors were localized in thoracic spine and could be divided into three types according to its location: (1) vertebral body hemangioma; (2) vertebral lamina hemangioma; (3) pure extramedullary hemangioma. The hemangioma showed low signal on T1WI and high signal on T2WI, and was enhanced markedly after contrast injection. On Xray film, the involved vertebral body had a palisadelike appearance.Conclusion: Because of its superior resolution for soft tissue, MRI can well demonstrate the size and extent of intraspinal extramedullary hemangioma, as well as the changes of vertebral body and lamina. The palisadelike appearance of vertebral body on plain film is a useful sign leading to the diagnosis of hemangioma.