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目的比较非典型脑膜瘤的CT及MRI表现与鉴别优点。方法选择2013年4月至2015年8月36例非典型性脑膜瘤患者作为研究对象,行CT及MRI检查,观察两种检查方法的影像学表现及与其他肿瘤的鉴别。结果 36例患者中,14例病灶在大脑凸面,11例位于大脑镰,7例在矢状窦,4例位于前中颅窝底。均出现不同程度水肿,4例径线为3.2 cm,其余32例平均径线均超过5.0 cm。结论非典型脑膜瘤的临床诊断中,定位诊断为关键,MRI在肿瘤硬膜及静脉窦侵犯、血供情况、动脉包裹情况、肿瘤生物学行为等方面的诊断更有优势,可作为首选检查方法,特征不典型时可结合磁共振静脉成像、磁共振血管造影并结合临床症状做出判断。
Objective To compare the CT features and MRI features of atypical meningioma. Methods From April 2013 to August 2015, 36 patients with atypical meningiomas were selected as the study objects. The CT and MRI examinations were performed to observe the imaging findings of the two examinations and to distinguish them from other tumors. Results Among the 36 patients, 14 lesions were convex in the brain, 11 in the falx, 7 in the sagittal sinus and 4 in the anterior middle cranial fossa. All showed different degrees of edema, 4 cases of diameter of 3.2 cm, and the remaining 32 cases average diameter of more than 5.0 cm. Conclusion In the clinical diagnosis of atypical meningiomas, localization diagnosis is the key. MRI has more advantages in the diagnosis of tumor dural and sinus invasion, blood supply, artery wrapping and tumor biological behavior, which can be used as the preferred method of examination , Atypical features can be combined with magnetic resonance venography, magnetic resonance angiography combined with clinical symptoms to make judgments.