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目的通过对40例脊柱转移瘤患者,采用STIR(短时间反转恢复)和FE/Fsat(场回波/脂肪抑制)两种不同方法的脂肪抑制序列进行检查对比,评价二者的诊断准确性。方法收集我院2002年1月～2005年3月,经MR检查病理证实的40例脊柱转移性病变,采用日本东芝FLEXART0.5T超导磁共振扫描仪,常规采用矢状位SE:T1WI、FSE:T2WI序列,同时进行STIR和FE/Fsat两种脂肪抑制序列扫描,必要时加做轴位和冠状位扫描。结果40例累及66个椎体,椎体形态改变29例,42个椎体,表现为椎体变扁,前后径增宽;24个椎体形态表现正常。单椎体转移9例,其中形态正常3例。向椎管内生长且压迫相应硬膜囊和脊髓5例。经采用配对样本t检验统计学处理,P值<0.001,病灶边界情况及信号强度的比较差异有显著性意义。结论STIR脂肪抑制序列对脊柱转移性病灶的发现比FE/Fsat脂肪抑制序列更有优势。
OBJECTIVE: To evaluate the diagnostic accuracy of the two methods in 40 patients with spinal metastases by using fat suppression sequences of STIR (short-term inversion recovery) and FE / Fsat (field echo / fat suppression) . Methods Forty cases of spine metastatic lesions confirmed by MR examination were collected from January 2002 to March 2005 in our hospital. FTIR was performed with FLEXART 0.5T superconducting magnetic resonance scanner from Japan. The sagittal SE: T1WI and FSE : T2WI sequence, both STIR and FE / Fsat two fat suppression sequence scan, if necessary, plus axial and coronal scan. Results 40 cases involving 66 vertebral bodies, 29 vertebral body shape changes, 42 vertebral bodies, showing vertebral body flattening, anteroposterior diameter broadening; 24 vertebral body morphology was normal. Single vertebral body transfer in 9 cases, of which 3 cases of normal morphology. To the spinal canal growth and oppression of the corresponding dural sac and spinal cord in 5 cases. After using paired samples t test statistical significance, P value <0.001, lesion border and signal intensity difference was significant. Conclusions The STIR fat suppression sequence has more advantages than FE / Fsat fat suppression sequence in finding metastatic lesions of the spine.