磁共振技术对非典型脑膜瘤术前诊断的价值  

The Diagnosis Value of MRI for the Atypical Meningioma before Surgery

作　　者：顾青[1] 孙学进[1] 莫茵[1] 刘祎[1] 李宗芳[1] 田伟[1] 

机构地区：[1]昆明医学院第一附属医院磁共振室,云南昆明650032

出　　处：《昆明医学院学报》2008年第5期131-135,共5页Journal of Kunming Medical College

摘　　要：目的探讨磁共振技术对非典型脑膜瘤术前诊断的价值,为肿瘤术前方案的制定提供较为准确的依据.方法回顾性分析10例经病理证实的非典型脑膜瘤,其中男6例,女4例,年龄在30～65岁,以30～40岁居多,临床表现为头痛头晕为主,病例均行MRI平扫和增强检查.结果所有病例均表现为边缘不规则,T1以稍低信号为主,T2以稍高信号为主,部份病灶囊性变,表现为信号不均匀,相邻骨板有不同程度破坏.肿瘤周围水肿和占位效应非常明显,肿瘤的供血血管显示非常明显,MRI可清楚的显示肿瘤及周围血管的情况.增强扫描时肿瘤实性部份明显均匀强化,囊变部份无强化,部份病例相邻脑膜强化,表现为短小的"脑膜尾征".结论磁共振对非典型性脑膜瘤的诊断具有非常明显的优势,尤其在显示瘤周水肿及相邻组织及血管的关系上具有相当大的价值.Objective To Methods There were 10 cases study the diagnosis value of MRI for atypical meningioma before surgery. with atypical meningiomas proved by pathology, 6 cases were male, 4 cases were female, ranged in age from 30 - 65 years. All cases were examined by MRI. Results The imaging features of atypical meningioma included： the borders of tumors were mostly irregular, nonhomogeneous signal on plain MRI, nonhomogeneous enhancement on enhanced MRI. Cystic and necrotic and the invasion of cranial bone and adjacent structure could be seen. The vessels of tumor displayed beautifully on MRI. Some cases with short, thick and irregular dural tail sign on MRI. Conclusion MRI is a effective method in diagnosing atypical meningioma, especially in displaying the edema round the tumor and the relationship between the tumor and adjacent vessels and structures.

关 键 词：非典型脑膜瘤 磁共振成像 诊断 

分 类 号：R445.2[医药卫生—影像医学与核医学]