2次元画像フィードバックに基づく自律血管内ナビゲーション手法:知覚と制御のフレームワーク
A 2D Image Feedback-Based Autonomous Endovascular Navigation Method: A Perception and Control Framework
血管内介入において、2次元のDSA/X線透視画像から血管マスクとデバイス先端位置を推定し、計画経路への進捗・偏差・方向を算出して、ルールベース制御器でガイドワイヤーを自律的に操作する手法を提案。ロボットプラットフォーム上で65回の閉ループ実験を行い、全試行で最大進捗0.95以上を達成した。
詳しい要約
1. どんなもの?
2. 先行研究と比べてどこがすごい?
3. 技術・手法の肝は?
4. どうやって有効だと検証した?
5. 議論はある?
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著者: Sheng Cao, Shuxiang Guo, Yonggan Yan, Jian Guo, Chunying Li, Bin Wang, Mingchao Ding, Yongxin Zhang, Yongwei Zhang, Pengfei Yang, Jianmin Liu
分類: cs.RO
原文アブストラクト
In endovascular interventions, physicians rely on planar DSA and X-ray fluoroscopy to interpret vessel anatomy and device motion, yet converting these images into feedback for autonomous navigation remains difficult. A perception and control method is formulated for two-dimensional image feedback. Vessel masks are converted into a labeled centerline graph, and device-tip estimates are projected onto a planned path to obtain progress, deviation, and direction. A rule-based controller uses these quantities for delivery, branch selection, probing, rollback, and recovery. The method was evaluated on a physical dual-device robotic platform in 65 closed-loop runs using simulator-rendered planar images across three paths. All runs reached at least 0.95 maximum observed guidewire progress; two runs (3.1%) met the prespecified failure rule of three or more autonomous stop events. The results establish route-level performance on the tested platform; clinical image sequences and broader anatomy remain to be evaluated.