论文部分内容阅读
目的 :探讨脑干胶质瘤的MRI特征。方法 :收集经证实的脑干胶质瘤 12例。结果 :MRI表现有以下 3个特征 :①肿瘤使脑干的外形增大 ,通过不同序列和断面显示肿瘤的精确部位 ,矢状面对于显示胶质瘤的早期改变、顶盖部位及延髓颈髓联合部位的胶质瘤具有独特作用。②肿瘤的T1加权像呈低信号或低等混合信号 ,T2 加权像呈高信号 ,注射造影剂 (GD DTPA)后除少数不增强外有 3种强化方式 :弥漫型、结节型、环状。③脑积水不常见 ,除非肿瘤位于顶盖部位压迫中脑导水管。结论 :MRI是诊断脑干胶质瘤的最理想检查方法
Objective: To investigate the MRI features of brain stem gliomas. Methods: Twelve patients with confirmed brain stem glioma were collected. Results: MRI showed the following three features: ① tumor brain stem shape increased by different sequences and sections show the exact location of the tumor, the sagittal display of early changes in glioma, the roof and medulla oblongata Glioma at the joint site has a unique role. Tumor weighted T1 weighted images showed low or low mixed signals, T2 weighted images showed high signal injection of contrast agent (GD DTPA), with the exception of a few non-enhanced there are three kinds of intensifying mode: diffuse, nodular, annular . ③ hydrocephalus is not common, unless the tumor is located in the roof of the central part of the oppression of the aqueduct. Conclusion: MRI is the best way to diagnose brain stem glioma