EPI弥散加权成像在诊断颅内表皮样囊肿中的价值

摘要

目的：评价应用EPI技术行弥散加权成像在诊断颅内表皮样囊肿中的作用。方法：对15例经术后病理证实为颅内表皮样囊肿和1例术后证实为蛛网膜囊肿的病人行常规MRI和弥散加权成像。结果：所有表皮样囊肿在弥散加权成像上均表现为高信号，蛛网膜囊肿在弥散加权成像上成低信号。结论：EPI弥散加权成像对诊断表皮样囊肿有价值。%Objective:To evaluate the role ofdiffusion-weighted(DW)echoplanar MRI in diagnosing epidermoid cyst.Methods:We examined 15 patients with epidermoid cysts and one patient with arachnoid cyst,which were proved by the pathological evidence postoperatively,using conventional MRI and diffusion-weighted echoplanar MRI. Results: All epidermoid cysts presented hyperintense signal.and the arachnoid cyst presented signal like CSF on diffusion-weighted imaging.Conclusion:DW echoplanar MRI is valuable in diagnosing intracranial epidermoid cyst.