摘要
目的:探讨椎管内脊膜瘤的MR特征。方法:回顾性分析28例29个经手术病理证实且资料完整的椎管内脊膜瘤MR表现。结果:29个肿瘤中,18个发生于胸段,17个T1W I为等信号,18个T2W I为等信号,增强扫描时全部肿瘤均呈中等程度强化,25个肿瘤均匀强化,12个见“硬脊膜尾征”。结论:脊膜瘤易发生于胸段,T1W I及T2W I呈等信号,中等程度强化、均匀强化及硬脊膜尾征是脊膜瘤的特征,扩散加权成像对鉴别良恶性脊膜瘤可能有意义。
Objective： To research MR features of spinal meningioma. Methods： Magnetic resonance images of 29 surgically confirmed meningiomas were retrospectively reviewed in 28 patients. Results： Of 29 meningiomas, 18 occured in the thoracic region. Seventeen of the tumors were isointense on T1 -weighted images and 18 of the tumors were isointense on T2 - weighted images. On enhanced T1 - weighted images, all of the tumors showed moderate enhancement, 25 of which showed homogeneous enhancement, and 12 of which showed the dural tail sign. Conclusion： The MR features of meningioma are significantly located at the thoracic levels, isointense with spinal cord on T1 - and T2 -weighted sequences, and moderately and homogeneously enhanced with the dural tail sign on enhanced T1 -weighted images. Diffusion -weighted imaging could be significant to differentiate between benign and malignant meningiomas.
出处
《现代临床医学》
2006年第5期356-357,共2页
Journal of Modern Clinical Medicine
关键词
磁共振
椎管
脊膜瘤
硬脊膜尾征
magnetic resonance
spinal canal
meningioma
dural tail sign
