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第二視皮質病灶引致的象限盲―病例報告
MRI Evidence of Quadrantanopsia Caused by Extrastriate (V2/V3) Lesion-One Case Report
摘要
本文報告一因第二視皮質病灶引致之象限盲之病例。此36歲的女性經核磁共振影像檢查顯示在左上側枕腦葉上有一腦膜瘤，範圍包含距狀緣上半部的第一視皮質及第二視皮質。手術時雖仍保留部份第一視皮質，但半年復，視野卻呈現右下側象限盲。此文藉由手術前後核磁共振影像變化的證據來探討因第二視皮質病社所引致象限盲的現象。
關鍵字
無資料並列摘要
The anatomical localization of a quadrantanopsia was believed in either lip of visual cortex (V1) above or below calcarine fissure. But this explanation is not convincing because how a lesion can precisely occur along the meandering calcarine fissure. Horton and Hoyt reported two cases and found the quadrantanopsia should be caused by extrastriate (V2/V3) lesion, not solely by primary visual cortex (V1). A 36 year old woman had a left occipital meningoma. She had the right lower quadrantanopsia six months after the craniotomy. The MRI provide the image evidence of extrastriate lesion causing quadrantanopsia.
延伸閱讀
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