小脑血管网织细胞瘤的MRI特征  

Image characteristic of cerebellar angioreticuloma on MRI

作　　者：王廷昱[1] 史克珊[2] 

机构地区：[1]中南大学湘雅医学院附属海口医院(海口市人民医院)CT,MRI室,570208 [2]中南大学湘雅医学院附属海口医院(海口市人民医院)神经外科

出　　处：《中国CT和MRI杂志》2006年第4期1-3,共3页Chinese Journal of CT and MRI

摘　　要：目的探讨小脑血管网织细胞瘤的MRI特征。方法对经手术证实的32例小脑血管网织细胞瘤的MRI资料进行回顾性分析。采用T1WI、T2WI、液体衰减反转恢复成像(FLAIR)和增强扫描。结果32例患者的病灶位于左小脑半球14例,右小脑半球11例,双小脑半球2例,上蚓部3例,下蚓部2例。MRI表现为囊壁结节型25例(78.1%),囊旁结节型3例(9.4%),实质型4例(12.5%)。肿瘤的活性部分于FLAIR和T2WI呈高信号,增强后明显强化;T1WI肿瘤囊性部分呈均匀低信号、肿瘤壁结节呈稍低信号或等信号。结论小脑血管网织细胞瘤有特定的发生部位及特征性MRI表现。MR对小脑血管网织细胞瘤的诊断具有较高的准确性,尤其是增强扫描对定性诊断及鉴别诊断具有重要的价值。Objective To probe image characteristics of cerebellar angioreticuloma on MRI as well as its pathological characteristics. Methods 32 patients who had been proved cerebellar angioreticuloma by operation underwent a review using their MRI data. T1WI and T2WI, fluid-attenuated inversion recovery (FLAIR) and enhanced scanning method were involved. Results Among the 32 patients, 14 had lesions in left cerebellar hemisphere, 11 in right cerebellar hemisphere, 2 in both hemispheres, 3 in superior vermis cerebelli and 2 in inferior vermis cerebelli. On MRI, 25(78.1%) manifested nodules on cyst wall, 3 (9.4%) nodules beside the cyst, and 4 (12.5%) were solid. Viable part of the lesions displayed hyperintensity on FLAIR and T2WI and could be significantly enhanced; the cyst part displayed an even hypointenisty on T1WI, and nodules on the cyst manifested a slight hypointensity or iso-intensity. Conclusion Cerebellar angioreticuloma has a predilection for some certain locations and is characteristic on MRI, MRI is highly precise for diagnosing cerebellar angioreticuloma, especially with the enhanced scanning, which can play a vital role in qualitative diagnosis and differential diagnosis.

关 键 词：小脑 血管网织细胞瘤 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R739.41[医药卫生—诊断学]