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arXiv · 2409.12108

SPRMamba: Surgical Phase Recognition for Endoscopic Submucosal Dissection with Mamba

Xiangning Zhang·Qingwei Zhang·Jinnan Chen·Chengfeng Zhou·Yaqi Wang·Zhengjie Zhang·Xiaobo Li·Dahong Qian
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Abstract

Endoscopic Submucosal Dissection (ESD) is a minimally invasive procedure initially developed for early gastric cancer treatment and has expanded to address diverse gastrointestinal lesions. While computer-assisted surgery (CAS) systems enhance ESD precision and safety, their efficacy hinges on accurate real-time surgical phase recognition, a task complicated by ESD's inherent complexity, including heterogeneous lesion characteristics and dynamic tissue interactions. Existing video-based phase recognition algorithms, constrained by inefficient temporal context modeling, exhibit limited performance in capturing fine-grained phase transitions and long-range dependencies. To overcome these limitations, we propose SPRMamba, a novel framework integrating a Mamba-based architecture with a Scaled Residual TranMamba (SRTM) block to synergize long-term temporal modeling and localized detail extraction. SPRMamba further introduces the Hierarchical Sampling Strategy to optimize computational efficiency, enabling real-time processing critical for clinical deployment. Evaluated on the ESD385 dataset and the cholecystectomy benchmark Cholec80, SPRMamba achieves state-of-the-art performance (87.64% accuracy on ESD385, +1.0% over prior methods), demonstrating robust generalizability across surgical workflows. This advancement bridges the gap between computational efficiency and temporal sensitivity, offering a transformative tool for intraoperative guidance and skill assessment in ESD surgery. The code is accessible at https://github.com/Zxnyyyyy/SPRMamba.

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Xiangning Zhang, Qingwei Zhang, Jinnan Chen, Chengfeng Zhou, Yaqi Wang, Zhengjie Zhang, Xiaobo Li, Dahong Qian. 2025-08-10. SPRMamba: Surgical Phase Recognition for Endoscopic Submucosal Dissection with Mamba. https://arxiv.org/abs/2409.12108

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