磁共振扩散加权成像在颅内表皮样囊肿中的诊断价值  

The value of diffusion-weighted MR imaging in diagnosing intracranial epidermoids

作　　者：陆建国[1] 丁庆国[1] 

机构地区：[1]江苏省常熟市第二人民医院影像中心,江苏常熟215500

出　　处：《中国中西医结合影像学杂志》2008年第1期8-10,共3页Chinese Imaging Journal of Integrated Traditional and Western Medicine

摘　　要：目的:探讨磁共振扩散加权成像(DWI)在颅内表皮样囊肿中的诊断价值。方法:收集颅内表皮样囊肿病例16例,均行常规MRI和DWI检查,分析表皮样囊肿在T2WI、T1WI、增强扫描和DWI上的影像表现。结果:16例均呈长T2长T1信号,其中2例伴短T2间隔信号,增强扫描14例无强化,2例呈包膜和间隔强化。16例DWI上均呈明显高信号。结论:磁共振DWI在颅内表皮样囊肿中具有重要的诊断价值,可作为常规MRI的重要补充检查方法。Objective： To investigate the value of MR diffusion-weighted imaging（DWI） in diagnosing intracranial epidermoids. Methods： Sixteen cases with intracranial epidermoids were performed with routine MRI scanning, and echo-planar DWI （EPI/ DWI）. T1-, T2-weighted imaging, enhanced imaging, and DWI features were analyzed. Results：Sixteen cases showed hypointensity on TlWI,hyperintensity on T2WI and 2 cases of all appeared hypointensity on T2WI with interval; 14 cases were non- enhancement,and 2 cases displayed envelope and interval enhancement. All of cases featured hyperintensity in DWI. Conclusion：DWI could play an important role in diagnosing intracranial epidermoids, and might be used an important supplement to the routine MRI method.

关 键 词：表皮样囊肿 磁共振成像 扩散成像 

分 类 号：R739.4[医药卫生—肿瘤]