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In this paper, we propose a model-based contact-aware motion planner for autonomous navigation of neuroendovascular tools in acute ischemic stroke. The planner is designed to find the optimal control strategy for telescopic pre-bent…

Robotics · Computer Science 2025-02-25 Aabha Tamhankar , Giovanni Pittiglio

Directed graphs are widely used to model asymmetric relationships in real-world systems. However, existing directed graph neural networks often struggle to jointly capture directional semantics and global structural patterns due to their…

Machine Learning · Computer Science 2025-08-20 Jiayu Fang , Zhiqi Shao , S T Boris Choy , Junbin Gao

Purpose: In surgical navigation, pre-operative organ models are presented to surgeons during the intervention to help them in efficiently finding their target. In the case of soft tissue, these models need to be deformed and adapted to the…

Graphics · Computer Science 2019-04-02 Micha Pfeiffer , Carina Riediger , Jürgen Weitz , Stefanie Speidel

Robot-assisted endoluminal procedures are increasingly used for early cancer intervention. However, the intricate, narrow and tortuous pathways within the luminal anatomy pose substantial difficulties for robot navigation. Vision-based…

Robotics · Computer Science 2026-03-10 Junyang Wu , Fangfang Xie , Minghui Zhang , Hanxiao Zhang , Jiayuan Sun , Yun Gu , Guang-Zhong Yang

Purpose: Autonomous navigation of catheters and guidewires can enhance endovascular surgery safety and efficacy, reducing procedure times and operator radiation exposure. Integrating tele-operated robotics could widen access to…

Machine Learning · Computer Science 2024-06-19 Harry Robertshaw , Lennart Karstensen , Benjamin Jackson , Alejandro Granados , Thomas C. Booth

Endovascular navigation, essential for diagnosing and treating endovascular diseases, predominantly hinges on fluoroscopic images due to the constraints in sensory feedback. Current shape reconstruction techniques for endovascular…

Image and Video Processing · Electrical Eng. & Systems 2023-11-21 Tudor Jianu , Baoru Huang , Pierre Berthet-Rayne , Sebastiano Fichera , Anh Nguyen

Navigation inside luminal organs is an arduous task that requires non-intuitive coordination between the movement of the operator's hand and the information obtained from the endoscopic video. The development of tools to automate certain…

Recent advancements toward perception and decision-making of flexible endoscopes have shown great potential in computer-aided surgical interventions. However, owing to modeling uncertainty and inter-patient anatomical variation in flexible…

Robotics · Computer Science 2023-02-28 Yiang Lu , Ruofeng Wei , Bin Li , Wei Chen , Jianshu Zhou , Qi Dou , Dong Sun , Yun-hui Liu

During endovascular interventions, physicians have to perform accurate and immediate operations based on the available real-time information, such as the shape and position of guidewires observed on the fluoroscopic images, haptic…

Image and Video Processing · Electrical Eng. & Systems 2024-04-16 Baochang Zhang , Mai Bui , Cheng Wang , Felix Bourier , Heribert Schunkert , Nassir Navab

In-pipe robots are promising solutions for condition assessment, leak detection, water quality monitoring in a variety of other tasks in pipeline networks. Smart navigation is an extremely challenging task for these robots as a result of…

Robotics · Computer Science 2021-12-03 Saber Kazeminasab , Vahid Janfaza , Moein Razavi , M. Katherine Banks

Purpose: The treatment of cardiovascular diseases requires complex and challenging navigation of a guidewire and catheter. This often leads to lengthy interventions during which the patient and clinician are exposed to X-ray radiation. Deep…

Machine Learning · Computer Science 2024-03-06 Valentina Scarponi , Michel Duprez , Florent Nageotte , Stéphane Cotin

This paper proposes a novel method for omnidirectional 360$\degree$ perception. Most common previous methods relied on equirectangular projection. This representation is easily applicable to 2D operation layers but introduces distortions…

Computer Vision and Pattern Recognition · Computer Science 2024-12-11 Yaniv Benny , Lior Wolf

Incorporating the dynamics knowledge into the model is critical for achieving accurate trajectory prediction while considering the spatial and temporal characteristics of the vessel. However, existing methods rarely consider the underlying…

Machine Learning · Computer Science 2023-03-22 Huimin Qiang , Zhiyuan Guo , Shiyuan Xie , Xiaodong Peng

Understanding pedestrian crossing behavior is an essential goal in intelligent vehicle development, leading to an improvement in their security and traffic flow. In this paper, we developed a method called IntFormer. It is based on…

Computer Vision and Pattern Recognition · Computer Science 2021-05-19 J. Lorenzo , I. Parra , M. A. Sotelo

Endovascular interventions are a life-saving treatment for many diseases, yet suffer from drawbacks such as radiation exposure and potential scarcity of proficient physicians. Robotic assistance during these interventions could be a…

Dynamic graph-level embedding aims to capture structural evolution in networks, which is essential for modeling real-world scenarios. However, existing methods face two critical yet under-explored issues: Structural Visit Bias, where random…

Machine Learning · Computer Science 2025-08-22 Haodi Zhong , Liuxin Zou , Di Wang , Bo Wang , Zhenxing Niu , Quan Wang

Designing mechanical mechanisms to trace specific paths is a classic yet notoriously difficult engineering problem, characterized by a vast and complex search space of discrete topologies and continuous parameters. We introduce MechaFormer,…

Machine Learning · Computer Science 2025-08-13 Diana Bolanos , Mohammadmehdi Ataei , Pradeep Kumar Jayaraman

Subcortical segmentation remains challenging despite its important applications in quantitative structural analysis of brain MRI scans. The most accurate method, manual segmentation, is highly labor intensive, so automated tools like…

Image and Video Processing · Electrical Eng. & Systems 2025-10-17 Aaron Cao , Vishwanatha M. Rao , Kejia Liu , Xinrui Liu , Andrew F. Laine , Jia Guo

Deep learning-based segmentation of genito-pelvic structures in MRI and CT is crucial for applications such as radiation therapy, surgical planning, and disease diagnosis. However, existing segmentation models often struggle with…

Image and Video Processing · Electrical Eng. & Systems 2025-03-19 Yuheng Li , Mingzhe Hu , Richard L. J. Qiu , Maria Thor , Andre Williams , Deborah Marshall , Xiaofeng Yang

Autonomous navigation is crucial for both medical and industrial endoscopic robots, enabling safe and efficient exploration of narrow tubular environments without continuous human intervention, where avoiding contact with the inner walls…

Robotics · Computer Science 2026-01-07 Sicong Gao , Chen Qian , Laurence Xian , Liao Wu , Maurice Pagnucco , Yang Song