摘要
目的旨在探讨脑胶质瘤多序列MRI影像学表现及其鉴别诊断价值。方法选取我院2016年1月-2018年3月收治的经病理证实的脑胶质瘤患者65例,患者均进行了MRI检查,扫描序列包括常规横断位、矢状位及冠状位T1WI、T2WI、液体衰减反转恢复(fluid attenuated inversion recovery,FLAIR,FLAIR)、扩散加权成像(diffusion weighted imaging,DWI),总结不同病理类型脑胶质瘤患者MRI扫描各序列图像表现,以病理学检查结果为对照,计算MRI检查对不同类型脑胶质瘤的诊断符合率。结果MRI检查对星形细胞瘤、少枝胶质瘤、室管膜瘤、髓母细胞瘤诊断符合率分别为97.61%、100.00%、83.33%、83.33%,MRI检查对脑胶质瘤诊断总符合率为95.38%(62/65);星形细胞瘤主要为水瘤型、囊型、混合型,水瘤型、囊型边缘模糊,未出现明显强化,混合型瘤体主要表现为混合密度,出现环形或结节状强化,低级星形细胞瘤T1WI为低信号,T2WI、FLAIR呈现高信号,DWI弥散受限。少枝胶质瘤患者中,多边界较模糊、水肿程度严重,强化不均匀;室管膜瘤MRIT1WI序列呈现稍低信号,T2WI序列为等信号,中度不均匀强化。髓母细胞瘤MRIT1WI序列呈现低信号,T2WI序列为等或稍高信号,外观呈现类圆形,病灶常可见水肿带。结论MRI多序列扫描中均可有效显示不同脑胶质瘤的影像学图像特征,鉴别诊断符合率高。
Objective To investigate the multi-sequence MRI imaging features of glioma and its differential diagnostic value.Methods 65 patients with pathologically proved glioma from January 2016 to March 2018 were selected and examined by MRI.Scanning sequence included conventional transverse,sagittal and coronal T1WI,T2WI,fluid attenuated inversion recovery(FLAIR),diffusion weighted imaging(DWI).The imaging manifestations of different pathological types of gliomas were summarized.The diagnostic coincidence rate of different types of gliomas was calculated by comparing the results of pathological examination.Results The diagnostic coincidence rates of MRI for astrocytoma,oligodendroglioma,ependymoma and medulloblastoma were 97.61%,100.00%,83.33%and 83.33%,respectively.The total coincidence rate of MRI for brain glioma was 95.38%(62/65).Astrocytoma is mainly of hydroma type,cystic type and mixed type.The margins of hydroma type and cystic type are blurred and no obvious enhancement is observed.Mixed tumors were characterized by mixed density,circular or nodular enhancement,low signal intensity on T1WI,high signal intensity on T2WI and FLAIR,and limited diffusion on DWI.In oligodendroglioma patients,the multilateral boundary is blurred,the degree of edema is serious,and the enhancement is not uniform.The MRI T1WI sequence of ependymoma shows slightly low signal,while the T2WI sequence shows equal signal and moderately uneven enhancement.The MRI T1WI sequence of medulloblastoma showed low signal intensity,while the T2WI sequence showed equal or slightly high signal intensity.The appearance of medulloblastoma was round,and edema zones were often seen in the lesions.Conclusion The imaging features of different gliomas can be effectively displayed in multi-sequence MRI scans,and the coincidence rate of differential diagnosis is high.
作者
邵华
姜磊
贾文霄
王媛媛
HAO Hua;JIANG Lei;JIA Wen-xiao(Department of Radiology,The First Affiliated Hospital of Xinjiang Medical University,Xinjiang 830054,China)
出处
《中国CT和MRI杂志》
2019年第11期1-3,12,共4页
Chinese Journal of CT and MRI
基金
新疆维吾尔自治区自然科学基金面上项目(2017D01C300)
关键词
脑胶质瘤
多序列MRI
影像学表现
鉴别诊断
Cerebral Glioma
Multi-sequence MRI
Imaging Findings
DifferentialDiagnosis
