188例脊柱转移瘤磁共振成像分析

（目的）分析１８８例脊柱转移瘤的ＭＲ表现，探讨其转移途径，生长方式和ＭＲＩ诊断价值，（方法）１８８例脊柱转移瘤患者均有脊柱病变区或原发肿瘤组织学证实，ＭＲ成像采用自旋回波序列，所有病例作了Ｔ１加权成像，质子密度成像和Ｔ２加权成像，４９例作了静脉注射Ｇｄ－ＤＴＰＡ后Ｔ１加权成像，（结果）１８８例共检出椎体转移７５６只，其中５９８只椎体呈现信号／形态异常，１５８例只仅呈现信号异常，９６例伴附件异常，１

Analysis of MR Imaging (MRI) in 188 Patients with Spinal Metastasis

Purpose]To analysis MRI findings in 188 patients with spinal metastasis in order to investigate their metastaic source ,growth pattem and MRI value. Methods]All 188 cases with spinal metastasis had histology proved. MR imaging was perfromed with Spin-Echo pulsc sequences.T1-weighted images.proton density impes and T2-weighted images were performed in all 188 cases and T1-weighted images after intravenous injection of Gd-DTPA were performed in 49 cases. Results]MR imaging presented abnormal in 756 vertebral bodies in all 188 cases. Both signa-abnomal and morphologic-abnormal occured in 598 bodies of them, with only signal-ahnormal in 159 bodies. Additionally, attachment abnormal was showed in 96 cases, paravertebral mass in 108 cases and intraspinal involvement in 121 cases. The abnorml signals of spinal metastasis (related to normal vertebral bodies) included low-signal on T1-weighted images and high-signal on T2-weighted images. Enhanced MR images may obscure the lesions with low-signal intensity of T1-weighted images but well demonstrate the extent of intraspial invovement and the active lesions of vertebral bodies. Conclusion]MR imaging is not only one of the most reliable methods for the diagnosis of spinal metatasis but also can evaluate metastatic source, growth patten and intraspinal involvement.