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为了探讨ＭＲＩ对颅内表皮样囊肿的诊断价值，观察了２０例经手术和病理证实的颅内先天性表皮样囊肿的ＭＲＩ表现，其中１２例有ＣＴ对照。Ｔ１加权像（Ｔ１ＷＩ）１８例呈低信号，其信号强度介于脑脊液和脑皮质之间，另２例呈明显高信号。Ｔ２加权像（Ｔ２ＷＩ）均呈高信号，但普遍有信号不均匀现象。１２例有ＣＴ者均呈低密度。颅内先天性表皮样囊肿好发于桥脑小脑角，有在中线生长的趋势，并常沿脑裂隙及脑池生长。ＭＲＩ显示病变范围优于ＣＴ，但对钙化的显示ＣＴ优于ＭＲＩ。结果提示：ＭＲＩ对颅内表皮样囊肿能作出定性诊断。
In order to investigate the diagnostic value of MRI for intracranial epidermoid cysts, MRI findings of 20 cases of surgically and pathologically confirmed intracranial congenital epidermoid cysts were observed. Twelve of them had CT contrast. T1 weighted images (T1WI) 18 cases showed low signal intensity between the cerebrospinal fluid and cerebral cortex, the other two cases showed a significant high signal. T2-weighted images (T2WI) showed high signal, but the signal is generally uneven phenomenon. Twelve cases of CT showed low density. Congenital intracranial epidermoid cysts occur in the pons cerebellar angle, there is a trend of growth in the midline, and often along the brain fissures and brain pool growth. MRI showed lesions better than CT, but calcification showed CT better than MRI. The results suggest that: MRI can make a qualitative diagnosis of intracranial epidermoid cysts.