摘要
目的探讨MRI对脑内型胆脂瘤的诊断价值。资料与方法 12例经手术病理证实的脑内型胆脂瘤患者行T1WI、T2WI、扩散加权成像(DWI)及增强检查,分析其形态及信号特点。结果肿瘤主要位于额颞叶,多呈圆形、类圆形,周围均无水肿。12例中T1WI呈不均匀低信号为主混有少量絮状、条片状等信号者7例,呈不均匀低信号为主混有少量高信号者4例,以高信号为主者1例。T2WI均以不均匀高信号为主,混杂少量絮状、条片状等信号。DWI均呈欠均匀高信号。增强扫描内部均未见强化,周边环形轻度强化者3例。结论脑内型胆脂瘤MRI表现有一定的特征性,MRI对脑内型胆脂瘤诊断及鉴别诊断有重要价值。
Objective To explore the value of MRI in diagnosis of intracephalic cholesteatoma.Materials and Methods Twelve patients with histologically proved cholesteatoma performed T1WI,T2WI,DWI and enhanced MR examination.The morphology and signal characteristics of tumors were analyzed.Results Tumors mainly located in frontal and temporal lobe without peripheral edema.Tumors showed inhomogeneous low and equal signal on T1-weighted images in 7 cases,inhomogeneous low and high signal on T1-weighted images in 4 cases and inhomogeneous high signal on T1-weighted image in 1 case.High signal intensity on T2-weighted images and diffusion weighted images were noted in the 12 cases.After contrast enhanced,there were mild ring-like enhancement in 3 cases.Conclusion Intracephalic cholesteatoma has certain MRI characteristics.MRI has significant value in diagnosis and differential diagnosis of intracephalic cholesteatoma.
出处
《临床放射学杂志》
CSCD
北大核心
2010年第9期1162-1164,共3页
Journal of Clinical Radiology
关键词
胆脂瘤
脑内型
磁共振成像
Cholesteatoma Endoencephalon Magnetic resonance imaging
