斜坡肿瘤的低场MRI表现

目的分析斜坡肿瘤的低场MRI表现。方法回顾性分析20例经临床和(或)病理证实的斜坡肿瘤的低场MRI表现。结果斜坡肿瘤低场MRI表现为正常斜坡被肿瘤组织所替代。原发性8例,肿瘤多呈膨胀性生长,信号多不均匀,多呈T1WI低T2WI高信号,不均一强化。继发性12例,肿瘤多呈浸润性改变,T1WI多呈低信号,T2WI多呈等高信号,多均匀强化,以T1WI最为敏感,但T2WI及T1WI增强有时难以区分病变。结论 MRI多序列结合对斜坡肿瘤的早期诊断具有重要价值。

Performance of the clivus tumors in low field MRI

Objective To analyze the performance of the clivus tumors in low field MRI.Methods The data of clivus tumors follow-up low field MRI of 20 patients proved clinically and(or) pathologically were retrospectively analyzed.Results The normal clivus was replaced by the tumor tissue in low field MRI.Primary in 8 cases,the tumors showed expansive growth,signal more uneven,with low T1WI and high T2WI signal,and heterogeneous enhancement.Secondary in 12 cases,showed mostly invasive tumor changes,low signal in T1WI and equal or slightly higher signal in T2WI,mostly homogeneous enhancement,it was most sensitive to T1WI,but was more difficult to distinguish by T2WI or T1WI enhanced.Conclusion It is important for the diagnosis of the clivus tumors by sequences combined in low field MRI.