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脑灰质异位MRI的特征 被引量:6

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摘要 目的探讨脑灰质异位MRI的特征。方法分析19例脑灰质异位的MRI影像学资料。结果根据脑灰质异位的形态和分布可将其分为:室管膜下型(7例),T1WI见双侧室管膜下多个光滑的结节状灰质信号的块影,部分结节突入脑室,使之受压变形;皮质下局灶型(8例),T1WI见异位的灰质呈结节状,或向侧脑室方向深入脑白质区的板状或脑回样;带状型(双皮质型)(1例),T1WI见异位灰质呈带状弥漫分布于脑白质内,形成“双皮质”状;混合型(3例),IRTSE/T1WI见室管膜下及皮质下结节状的异位灰质。结论脑灰质异位的MRI表现具有特征性,在诊断及鉴别诊断中有重要的价值。
出处 《临床神经病学杂志》 CAS 北大核心 2005年第3期220-221,共2页 Journal of Clinical Neurology
关键词 脑灰质异位 MRI
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