目的 探讨MRI在大脑镰旁脑膜 瘤诊断中的应用价值。方法 回顾性分 析我院2013年12月-2015年12月期间接 收诊治的81例大脑镰旁脑膜瘤患者的临 床资料和MRI影像学资料，综合分析大 脑镰旁脑膜瘤的MRI影像特征及病理特 点。结果 81例患者共发育肿瘤92个，其 中单发患者74例，多发患者7例，前、 中、后1/3大脑镰旁脑膜瘤患者分别有23 例、28例、30例；瘤体直径在1-8cm之 间，形态呈半球状有86个(约占93.5%)， 结节状有6个(约占6.5%)；MRI对大脑镰 旁脑膜瘤患者肿瘤的定性诊断符合率 为91.3%(84/92)，定位诊断符合率为 86.42%，且与病理学诊断结果相比较， 差异无统计学意义(P>0.05)；本组81例 患者中有56例患者的肿瘤在T1WI为等信 号、19例T1WI为稍低信号，45例在T2WI 为等信号，30在T2WI为稍高信号，6例在 T1WI及T2WI均为混杂不均匀信号。结论 MRI在对大脑镰旁脑膜瘤患者的临床诊 断中，能够清楚地显示出肿瘤的发育部 位、数目、大小、形态及其与周围脑组 织的关系，并且对肿瘤的电信号及肿瘤 内部血供量变化等能够表现出明显强化 的作用，其大脑镰旁对脑膜肿瘤的定位 诊断及定性诊断都具有较高的诊断符合 率，在临床中可以作为一种首先的检查 方法，值得进一步推广和应用。

Objective To investigate the application value of MRI in the diagnosis of cerebral falx meningioma. Methods Retrospective analysis of the clinical data and MRI data of 81 cases of cerebral falx meningioma patients in our hospital received during the diagnosis and treatment during December 2013 to December 2015. Comprehensive analysis of MRI features of cerebral falx meningioma and pathological features. Results A total of 81 patients developed 92 tumors, including single patients in 74 cases, 7 cases of patients with multiple. Before, during and after 1/3 of cerebral falx meningioma were 23 cases, 28 cases, 30 cases. The tumor diameter between 1-8cm morphology was hemispherical 86 (about 93.5%), nodular 6 (about 6.5%). MRI of cerebral falx meningioma tumor qualitative diagnosis coincidence rate was 91.3% (84/92), localization diagnosis with rate was 86.42%, and with pathological diagnosis results compared, the difference was not statistically significant(P>0.05). This group of 81 patients with tumors of 56 patients in the T1WI signal, 19 cases of T1WI slightly low signal, 45 cases in the T2WI signal, 30 in T2WI is slightly high signal in 6 cases, T1WI and T2WI are not uniform signal. Conclusion MRI of cerebral falx meningioma patients with clinical diagnosis of, can clearly display the development of cancer in the site, number, size, shape and its relationship with the surrounding brain tissue, and the tumor signal and tumor blood supply variation and showed obvious enhancement of the role, the falx of meningeal tumor diagnosis and qualitative diagnosis has high diagnostic coincidence rate and in clinical practice can be as a first inspection method. It is worthy of further promotion and Application.