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Neurological Surgery 脳神経外科35巻11号

2007年11月発行

文献概要

研究

MR仮想神経内視鏡による微小血管減圧術前シミュレーションの有用性

著者: 大石誠1 福多真史1 高尾哲郎1 石田剛2 佐藤光弥2 藤井幸彦1

所属機関: 1新潟大学脳研究所脳神経外科学教室 2真仁会北日本脳神経外科病院

ページ範囲:P.1087 - P.1095

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Ⅰ.はじめに

 三叉神経痛(TN)や片側顔面痙攣(HFS)を代表とする神経血管圧迫症候群neurovascular compression syndrome (NVCS)は,脳神経のroot entry(またはexit)zone(REZ)を脳血管が直接圧迫することで生じる異常性興奮により,持続的な神経症状を呈する病態であり,微小血管減圧術microvascular decompression(MVD)はその根治的な治療法として知られる8-10).NVCSの正確な診断とMVDの確実な遂行には,患者個々における小脳橋角部の微小解剖をできる限り詳細に検討することが重要であり,この点でMR画像診断の果たしてきた役割は大きく,heavy T2強調画像やMR angiography(MRA)といった撮像条件の工夫による脳幹周囲の神経・血管構造の評価法の有用性が多数報告されてきた1-4,11,17,19,20).しかし,実際に2次元画像から脳幹周囲の3次元的な微小解剖を把握することは,慣れた脳神経外科医にとっても難しい場合が多く,コンピュータの高性能化に伴い発展してきた3次元画像処理技術に寄せられる期待は大きい.われわれは本研究で,thin-sliceで撮像した脳幹周囲のheavy T2強調画像やMRAをvolume renderingすることで作成される仮想神経内視鏡virtual endoscopy(VE)を用い,NVCSに対するMVD術前における3次元手術シミュレーションの有用性を検討した.

参考文献

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掲載誌情報

出版社:株式会社医学書院

電子版ISSN:1882-1251

印刷版ISSN:0301-2603

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