【摘要】 目的 研究鞍结节脑膜瘤的MRI特征。 方法 回顾性分析24例经手术病理证实的鞍结节脑膜瘤MRI表现。 结果 24例患者中，T 1 WI像上等信号者18例，低信号者6例，在T 2 WI像上呈等信号者10例，略高信号者10例，明显高信号者4例。肿瘤均匀强化的18例，不均匀强化者为4例，环形强化者为2例。22例可见脑膜尾征。病理诊断:上皮型脑膜瘤11例，纤维型5例，合体细胞型3例，血管型2例，混合型2例，恶性者1例。 结论 鞍结节脑膜瘤MRI表现具有一定的特征性，了解这些特征，有助于鞍结节脑膜瘤的诊断和鉴别诊断。

    关键词 鞍结节脑膜瘤 磁共振成像

    Tuberculum sellae meningioma:MRI features and differential diagnoses

    Zhang Kewen，Lv Guoshi，Chen Yanping

    Imaging Center，The First People's Hospital of Changde，Changde415000.

    【Abstract】 Objective To study the MRI features of tuberculum sellae meningioma.Methods MRI features were analyzed retrospectively in24cases of tuberculum sellae meningioma verified by operative pathology.Results On24cases of MR images，the tumor were manifested as iso-signal in18cases and hypo-signal in6cases on T 1 WI，iso-signal in10cases slight，iso-signal in10cases and hyper-signal in4cases on T 2 WI.After contrast injection ......