炎症性腸疾患患者における大腸病変検出のための人工知能ツールの開発
Daniela Guerrero Vinsard1, Jeffrey R Fetzer1,2, Upasana Agrawal1,3
1Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota, USA.
iGIE : innovation, investigation and insights
|February 6, 2026
まとめ
新しい人工知能モデルは、炎症性腸疾患(IBD)患者の大腸病変の検出を大幅に改善します。このコンピュータ支援検出(CADe)ツールは、感度と精度を高め、早期のがん予防に役立ちます。
科学分野:
- 消化器病学
- 医用画像処理
- 人工知能
背景:
- 炎症性腸疾患(IBD)患者は、大腸がんのリスクが高いです。
- IBD患者における大腸がん予防には、異形成の早期検出が重要です。
- 人工知能(AI)は、内視鏡検査での病変検出を強化する可能性を示しています。
研究 の 目的:
- IBD患者の大腸病変に特化した最初のコンピュータ支援検出(CADe)モデルを開発および評価すること。
- IBDにおける異形成検出のための再学習されたAIモデルのパフォーマンスを評価すること。
- IBDにおける大腸がんスクリーニングの精度を向上させること。
主な方法:
- 既存のCADeモデルをIBD病変画像でテストしました。
- IBD関連病変の1266枚の高解像度白色光内視鏡(HDWLE)画像と426枚の色素内視鏡画像を使用して、CADeモデルを再学習しました。
- 病変は、組織病理学、サイズ、形態、および周囲の炎症によって注釈付けされました。モデルのパフォーマンスは、再学習の前後に評価されました。
主要な成果:
- 再学習されたIBD-CADeモデルは、HDWLE画像で95.1%の感度と96.8%の精度を達成しました。
- 色素内視鏡画像におけるパフォーマンスメトリクスには、67.4%の感度と77.8%の精度が含まれていました。
- このモデルは、さまざまな病変サイズで高い感度を示し、特定のパリ分類タイプで最も優れたパフォーマンスを発揮しました。
結論:
- 開発されたIBD-CADeモデルは、IBD患者における大腸病変の検出において重要な進歩を表しています。
- このAIツールは、IBDにおける異形成検出のための高度な内視鏡ツールを開発するための最初のステップです。
- この発見は、AIがIBD患者の内視鏡サーベイランスを大幅に改善できることを示唆しています。
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