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目的 探讨窦镰旁脑膜瘤肿块与窦镰关系的MRI表现特征。资料与方法 搜集经手术和病理证实的 33例窦镰旁脑膜瘤的MRI资料。 2 3例使用ElscintGyrexV 0 .5TMR扫描仪检查 ,1 0例使用ToshibaVisart/EX 1 .5TMR扫描仪检查 ,常规SE序列平扫和增强扫描。结果 33例窦镰旁脑膜瘤除具有一般脑膜瘤的MRI表现外 ,其肿块与窦和 /或大脑镰的关系所具有的MRI特征为 :(1 )肿块跨越征 ;(2 )矢状窦受压、填塞征 ;(3)肿块内侧缘平直征 ;(4)大脑镰向肿块侧扭曲征 ;(5)大脑镰局限增厚征等。结论 MRI是揭示窦镰旁脑膜瘤肿块与窦镰关系的优良方法 ,且对手术治疗具有重要价值
Objective To investigate the MRI manifestations of the relationship between sinus falx meningioma mass and sinus falx. Materials and Methods MRI data of 33 cases of parapharyngeal meningioma confirmed by operation and pathology were collected. Twenty-three patients were examined using the Elscint Gyrex V 0.5 TMR scanner and 10 patients were examined using the ToshibaVisart / EX 1.5 TMR scanner, with conventional SE sequence and enhanced scan. Results 33 cases of sinus falx paraneoplastic meningiomas in addition to the general MRI features of meningioma, the tumor and the relationship between the sinus and / or falx have MRI features: (1) mass across the levy; (2) the sagittal sinus by Pressure, stuffing sign; (3) the flat lateral edge of the mass; (4) the falx to the mass side of the falx syndrome; (5) Cerebral sickle limited thickening syndrome. Conclusion MRI is an excellent method to reveal the relationship between sinus falx melena tumor and sinus fallacy and is of great value to surgical treatment