磁共振成像诊断脊柱转移瘤的评价

MRI evalution of spinal metastatic tumours diagnosis

目的 分析脊柱转移瘤的磁共振成像 (MRI)表现 ,并探讨MRI对脊柱转移瘤的诊断价值。方法 总结44例脊柱转移瘤病例 ,其中男 2 4例 ,女 2 0例 ,均有明确原发癌史。使用西门子 1.0T超导MRI成像仪 ,行T1 WI、T2 WI矢状位及轴位T1 WI扫描 ,必要时增强 ,加扫T1 WI脂肪抑制序列。结果 12例为单椎体转移 ,3 2例为多椎体转移 ,呈跳跃分布。 44例中转移椎体总数 91个 ,其中胸椎 40个 ,腰椎 2 6个 ,颈椎 16个 ,骶椎 9个。 70个转移椎体后部及附件受累 ,17例椎旁有软组织肿块 ,10例脊髓受压。转移椎体呈长T1 长T2 或等T2 信号改变 ,相邻椎间盘形态信号基本正常。结论 脊柱转移癌MRI具有典型表现 ,MRI对脊柱转移瘤有肯定诊断价值 ,为最佳影像检查手段之一。

Objective To analyze MRI features and explore the value of MRI in evaluating spinal metastatic tumour. Methods Forty-tour cases (men 24, women 20) with spinal metastatic tumours, who had with clear primary focuses of carcinoma were analyzed. Simens 1.0 Tsuperconductive MR vnit was used to perform sagittal T 1WI?T 2WI and axial Tl 1WI, if necessary, T 1WI fat inhibition sequence was added. Results single vertebra was involved 12 cases, and multievertebrae were involved in 32 cases with salutatory distribution. Of 44 cases, 91 vertebrae were involved, 40 in thoracic vertebrae, 26 in lumbar vertebrae, 16 in cervical vertebrae, 9 in sacral vertebrae. 70 vertebrae rearward and appendages were involved. The paravertebral soft tissue masses presented in 17 cases, the spinal cord were compressed in 10 cases. Metastatic vertebrae had long T 1 and long T 2 or equalT 2 signal intensity and their close vertebrae disks were normal. Conclusion MRI has typical features and affirmative diagnostic valuefor spinal metastatic tumour. MRI is the best mean in diagnosing spinal metastatic tumour.