颅内非感染性囊肿的MRI诊断及鉴别诊断研究  

DIAGNOSIC AND DIFFERENTIAL DIAGNOSIC STUDY OF INTRACRANIAL NONINFECTIOUS CYSTS BY MRI

作　　者：葛丽红[1] 牛广明[1] 韩晓东[1] 

机构地区：[1]内蒙古医学院附属医院磁共振室,内蒙古呼和浩特010050

出　　处：《内蒙古医学院学报》2011年第3期177-181,共5页Acta Academiae Medicinae Neimongol

摘　　要：目的:探讨颅内非感染性囊肿MRI影像特点,用以指导临床诊断及鉴别诊断。方法:回顾性分析170例颅内非感染性囊肿的MRI资料,其中部分囊肿经手术或病理证实,总结病变发病部位、形态、MRI信号特点。结果:92例蛛网膜囊肿,位于中颅窝颞前部53例;表皮样囊肿24例,22例位于桥前池或桥小脑角区,DWI均表现为高信号;14例松果体囊肿,全部位于松果体区;12例血管周围间隙,10例位于底节区或中脑;10例Rathke裂囊肿,均位于鞍内或鞍上;8例脑穿通畸形,均位于大脑半球;5例脉络膜裂囊肿,均位于颞叶;4例室管膜囊肿,均位于侧脑室三角区;1例脉络丛囊肿位于侧脑室三角区。蛛网膜囊肿、血管周围间隙、脑穿通畸形、脉络膜裂囊肿、室管膜囊肿内液体FLAIR序列上被抑制,表皮样囊肿、松果体囊肿、Rathke裂囊肿、脉络丛囊肿内液体FLAIR序列不被抑制。结论:蛛网膜囊肿是颅内常见囊肿;囊肿发病部位、弥散加权成像、水抑制序列对诊断及鉴别诊断有帮助。Objective：To explore the characteristic MRI findings of intracranial noninfectious cysts and guide clinic diagnosis and differential diagnosis.Methods：170 intracranial noninfectious cysts having complete clinical data and partly verified by operation and pathology were analyzed.To detect cyst＇s location,shape,MRI signal feature.Results：92 arachnoid,53 located in cysts middle cranial fossa.24 epidermoid cysts,22 located in cerebellopontine angle cistern,DWI all showed hyperintensity;14 pineal cysts.14 located in pineal gland.12 enlarged perivascular space（PVS）,10 located in basal/midbrain.10 Rathke cleft cysts,10 located in sellar or suprasella.8 porencephalic cysts,8 located in cerebral hemispheres.5 neuroglial cysts,5 located in temporal lobe.4 ependymal cysts,4 located in lateral ventricle.1 choroid plexus cysts,1 located in lateral ventricle.arachnoid,PVS,neuroglia,ependyma,porencephalic cysts demonstrated markedly hypointensity on FLAIR,the others showed slightly hypointensity.Conclusion：Arachnoid cysts are common,the cyst＇position,DWI and FLAIR are important for differential diagnosis.

关 键 词：MRI 颅内囊肿 弥散加权成像 水抑制序列 

分 类 号：R445.2[医药卫生—影像医学与核医学]