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arXiv · 2507.16559

Comparative validation of surgical phase recognition, instrument keypoint estimation, and instrument instance segmentation in endoscopy: Results of the PhaKIR 2024 challenge

Tobias Rueckert·David Rauber·Raphaela Maerkl·Leonard Klausmann·Suemeyye R. Yildiran·Max Gutbrod·Danilo Weber Nunes·Alvaro Fernandez Moreno·Imanol Luengo·Danail Stoyanov·Nicolas Toussaint·Enki Cho·Hyeon Bae Kim·Oh Sung Choo·Ka Young Kim·Seong Tae Kim·Gonçalo Arantes·Kehan Song·Jianjun Zhu·Junchen Xiong·Tingyi Lin·Shunsuke Kikuchi·Hiroki Matsuzaki·Atsushi Kouno·João Renato Ribeiro Manesco·João Paulo Papa·Tae-Min Choi·Tae Kyeong Jeong·Juyoun Park·Oluwatosin Alabi·Meng Wei·Tom Vercauteren·Runzhi Wu·Mengya Xu·An Wang·Long Bai·Hongliang Ren·Amine Yamlahi·Jakob Hennighausen·Lena Maier-Hein·Satoshi Kondo·Satoshi Kasai·Kousuke Hirasawa·Shu Yang·Yihui Wang·Hao Chen·Santiago Rodríguez·Nicolás Aparicio·Leonardo Manrique·Juan Camilo Lyons·Olivia Hosie·Nicolás Ayobi·Pablo Arbeláez·Yiping Li·Yasmina Al Khalil·Sahar Nasirihaghighi·Stefanie Speidel·Daniel Rueckert·Hubertus Feussner·Dirk Wilhelm·Christoph Palm
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Abstract

Reliable recognition and localization of surgical instruments in endoscopic video recordings are foundational for a wide range of applications in computer- and robot-assisted minimally invasive surgery (RAMIS), including surgical training, skill assessment, and autonomous assistance. However, robust performance under real-world conditions remains a significant challenge. Incorporating surgical context - such as the current procedural phase - has emerged as a promising strategy to improve robustness and interpretability. To address these challenges, we organized the Surgical Procedure Phase, Keypoint, and Instrument Recognition (PhaKIR) sub-challenge as part of the Endoscopic Vision (EndoVis) challenge at MICCAI 2024. We introduced a novel, multi-center dataset comprising thirteen full-length laparoscopic cholecystectomy videos collected from three distinct medical institutions, with unified annotations for three interrelated tasks: surgical phase recognition, instrument keypoint estimation, and instrument instance segmentation. Unlike existing datasets, ours enables joint investigation of instrument localization and procedural context within the same data while supporting the integration of temporal information across entire procedures. We report results and findings in accordance with the BIAS guidelines for biomedical image analysis challenges. The PhaKIR sub-challenge advances the field by providing a unique benchmark for developing temporally aware, context-driven methods in RAMIS and offers a high-quality resource to support future research in surgical scene understanding.

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Tobias Rueckert, David Rauber, Raphaela Maerkl, Leonard Klausmann, Suemeyye R. Yildiran, Max Gutbrod, Danilo Weber Nunes, Alvaro Fernandez Moreno, Imanol Luengo, Danail Stoyanov, Nicolas Toussaint, Enki Cho, Hyeon Bae Kim, Oh Sung Choo, Ka Young Kim, Seong Tae Kim, Gonçalo Arantes, Kehan Song, Jianjun Zhu, Junchen Xiong, Tingyi Lin, Shunsuke Kikuchi, Hiroki Matsuzaki, Atsushi Kouno, João Renato Ribeiro Manesco, João Paulo Papa, Tae-Min Choi, Tae Kyeong Jeong, Juyoun Park, Oluwatosin Alabi, Meng Wei, Tom Vercauteren, Runzhi Wu, Mengya Xu, An Wang, Long Bai, Hongliang Ren, Amine Yamlahi, Jakob Hennighausen, Lena Maier-Hein, Satoshi Kondo, Satoshi Kasai, Kousuke Hirasawa, Shu Yang, Yihui Wang, Hao Chen, Santiago Rodríguez, Nicolás Aparicio, Leonardo Manrique, Juan Camilo Lyons, Olivia Hosie, Nicolás Ayobi, Pablo Arbeláez, Yiping Li, Yasmina Al Khalil, Sahar Nasirihaghighi, Stefanie Speidel, Daniel Rueckert, Hubertus Feussner, Dirk Wilhelm, Christoph Palm. 2026-01-19. Comparative validation of surgical phase recognition, instrument keypoint estimation, and instrument instance segmentation in endoscopy: Results of the PhaKIR 2024 challenge. https://doi.org/10.1016/j.media.2026.103945

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