モノポラー深部脳刺激中に,機能的磁気共鳴画像の解釈性に対する誘導電流の影響
Chengyuan Wu1,2, Stephen Slovensky1,2, Mahdi Alizadeh1,2
11Department of Neurosurgery, Thomas Jefferson University, Philadelphia.
Journal of neurosurgery
|February 13, 2026
まとめ
マグネット共鳴画像 (MRI) は,モノポラーモードで進行する深部脳刺激 (DBS) を著しく歪め,機能MRI (fMRI) の解釈に影響を与えます. 双極コンフィギュレーションは安定した電流を維持し,DBS中の信頼性の高いfMRIデータにとって不可欠であることが証明されています.
科学分野:
- 神経科学は神経科学である.
- メディカルイマージング (医学イメージング)
- バイオメディカルエンジニアリング
背景:
- 深部脳刺激 (DBS) は,治療的介入である.
- 機能性磁気共鳴画像 (fMRI) は,脳の活動を評価するために使用されます.
- 同時にMRIとDBSを用いると,デバイスの安定性とデータの完全性に関する懸念が高まります.
研究 の 目的:
- MRIスキャン中にDBS電流の安定性を評価するために.
- MRI誘発の電流の変動がfMRIの解釈性に影響するかどうかを判断する.
- モノポーラーとバイポーラーDBSのコンフィギュレーションの間の電流安定性を比較する.
主な方法:
- 2つの電流制御DBSシステムは,3TMRIで幻体でテストされました.
- 刺激は,オンとオフの両方の単極および双極モードで適用されました.
- 誘導電流は,fMRIプロトコルを含む様々なシーケンスでMRI条件設定を使用して測定されました.
主要な成果:
- モノポラーDBSは,MRI,特にfMRIシーケンス中に,MRI中に重大な電流変動 (-3.2から+3.9mA) と極性逆転を示した.
- 双極性DBSは,プログラムされたパラメータからの微小な偏差で安定した出力を示した.
- 単極出力の変動は,システム全体で一貫しており,阻力変化によるものではありません.
結論:
- MRI誘発の電流は,単極DBS出力を大幅に変化させ,同時にfMRIデータを損なう.
- モノポラーDBS中に観察された血中酸素レベル依存 (BOLD) 反応は,歪んだ刺激を反映している可能性があります.
- 双極性DBSの構成は,混同効果を回避し,刺激中に正確なfMRI解釈を確保するために推奨されます.
キーワード:
安全性MRI安全性MRIについて双極性刺激による双極性刺激機能性磁気共鳴画像処理について誘導電流を誘導した.モノポーラ刺激による刺激です.深い脳刺激による脳刺激.診断技術 診断技術 診断技術機能性神経外科手術についてさらに関連する動画
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