Real-time simulation of interaction between colon and endoscope for the colonoscopy simulation

Area of Science:

• Medical Simulation
• Computer Graphics
• Biomechanical Engineering

Background:

• Realistic simulation of colonoscopy requires accurate modeling of colon deformation and endoscope interaction.
• Existing methods may lack the computational efficiency for real-time applications.

Purpose of the Study:

• To develop a novel, computationally efficient simulation framework for real-time colon and endoscope deformation.
• To enable high-fidelity colonoscopy simulations for training and research.

Main Methods:

• Utilized a skeleton-driven deformation approach with cylindrical lattices and a centerline as skeletons.
• Applied a mass-spring model for mechanics-based simulation of skeletal structures.
• Implemented a centerline-based collision detection and resolution algorithm for colon-endoscope interaction.
• Integrated the framework into a complete colonoscopy simulation environment.

Main Results:

• Achieved real-time simulation performance at 28 Hz.
• Successfully simulated the deformation of a colon model comprising up to 241,440 meshes.
• Demonstrated accurate modeling of colon-endoscope interactions.

Conclusions:

• The proposed skeleton-driven deformation framework enables efficient and realistic real-time colonoscopy simulation.
• This method provides a valuable tool for medical training and the development of endoscopic devices.