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- W4387487441 abstract "In needle insertion navigation, most researches focus on intraoperative images based navigation system that provides only visual feedback. Besides, few navigation systems are integrated with insertion robot. In this paper, we proposed a digital twin model based robot-assisted needle insertion navigation system with visual and force feedback. Our system can predict needle deflection, tissue deformation for visual feedback and interaction force for force feedback while insertion robot can help steering needle for accurate insertion. The proposed needle insertion navigation system integrates digital twin model and insertion-assisted robot. A digital twin model of target organ, which includes finite element model and visual model, can be generated based on preoperative CT image to predict needle deflection, tissue deformation and interaction force of planned needle path. Optic-based calibration method for our system is developed. A hybrid spring mapping method based on radial-basis function interpolation and spring-mass model is proposed as well for better visual feedback. The proposed navigation system can provide both visual feedback and force feedback in digital twin model for surgeons while robot can help steering needle to target position. Simulations and experiments are carried out for our navigation system and hybrid spring mapping method. Results show the calibrated system is accurate with 4mm targeting accuracy, which meets clinical accuracy requirements. Hybrid spring mapping method can update the visual model smoothly. Both force and visual feedback can be registered to the digital twin coordinate system, allowing for accurate and consistent feedback for navigation." @default.
- W4387487441 created "2023-10-11" @default.
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- W4387487441 date "2023-01-01" @default.
- W4387487441 modified "2023-10-16" @default.
- W4387487441 title "Digital Twin Model Based Robot-Assisted Needle Insertion Navigation System with Visual and Force Feedback" @default.
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- W4387487441 doi "https://doi.org/10.1007/978-981-99-6489-5_10" @default.
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