颅内表皮样囊肿MRI扫描序列的应用  

Application of optional MRI sequences in intracranial epidermoid cyst

作　　者：邓小霞[1] 程传虎[1] 刘锦文[1] 肖俊强[1] 钟兰生[1] 曾纯英[1] 范远娴[1] 

机构地区：[1]广东惠州市中心人民医院放射科,广东惠州516001

出　　处：《中国医药导报》2007年第07S期30-31,共2页China Medical Herald

摘　　要：目的:探讨磁共振(MR)弥散加权成像(DWI)、T2-液体衰减反转恢复(T2-FLAIR)以及常规平扫(T1WI、T2WI)在颅内表皮样囊肿诊断中的作用,比较各序列在病灶检出以及诊断特异性中的价值。方法:回顾性分析34例手术病理证实的颅内表皮样囊肿的术前MR常规平扫、T2-FLAIR以及DWI资料。结果:33例T1WI呈低信号,1例T1WI呈高信号,脂肪抑制像未能抑制。T2WI呈高信号,稍高于脑脊液。T2-FLAIR囊内见不同数量的絮状稍高信号影,其中有4例仅在边缘出现少量絮状等高信号影。DWI均表现为明显高信号,信号不均匀。结论:无论在颅内表皮样囊肿病灶检出还是在信号特异性方面,DWI均优于MRI平扫以及T2-FLAIR,是颅内表皮样囊肿最具诊断价值的扫描技术。Objective： To evaluate the MR sequences and its diagnostic value of the intracranial epidermoid cyst.Methods： The data of 34 cases with pathologically confirmed intracranial epidermoid cyst were retrospectively studide which were performed with MRI routine scan,T2-FLAIR,DWI.Results：Among these cases, 33 cases were hyperintensity on T,WI and 1 case was hypointensity and fat-suppression T1WI was not suppressed . All cases were hyperintensity on T2WI, which were higher than that of cerebrospinal fluid. On T2-FLAIR, 30 cases were hyperintensity, among which 4 cases appeared as hyperintensity on the margin. All cases were heterogeneous hyperintensity on DWI.Condusion：MRI especially DWI play an important role in the detection and differential diagnosis of intracranial epidermoid cyst.

关 键 词：磁共振弥散加权成像 T2-液体衰减反转恢复 常规平扫 颅内表皮样囊肿 

分 类 号：R739.4[医药卫生—肿瘤]