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目的：分析三叉神经鞘瘤的ＭＲＩ表现。方法：搜集经手术和病理证实的三叉神经鞘瘤６例，其中并发神经纤维瘤病２例，均行ＭＲ平扫及增强检查。结果：肿瘤ＭＲ表现以哑铃状骑跨征为主。肿瘤大多为实性，边界清楚，有完整的包膜肿瘤呈等、混杂或长Ｔ１、长Ｔ２信号，注射ＧｄＤＴＰＡ后实性病灶呈均匀强化，囊性病灶呈环状强化。结论：ＭＲＩ以其特有的多方位断层、多参数成像对三叉神经鞘瘤的定位、定性诊断具有很高的准确性。
Objective: To analyze the MRI manifestations of trigeminal schwannoma. Methods: Six cases of trigeminal schwannoma confirmed by operation and pathology were collected, including 2 cases of neurofibromatosis complicated with MR plain scan and enhanced examination. Results: Tumor MR showed dumbbell-shaped riding around the main symptoms. Tumors are mostly solid, the border is clear, a complete capsule tumor was equal, mixed or long T1, T2 signal, solid lesions after injection of Gd DTPA was uniformly enhanced cystic lesions were ring-shaped enhancement. Conclusion: MRI has high accuracy for the localization and qualitative diagnosis of trigeminal schwannoma with its unique multi-faceted multi-parameter imaging.