Simulation of endovascular guidewire behaviour and experimental validation

Area of Science:

• Medical Simulation
• Biomedical Engineering
• Radiology

Background:

• Guidewire manipulation is crucial for endovascular interventional radiology.
• Current simulation models need to accurately replicate guidewire biomechanics.
• Realistic simulation enhances procedural training and patient safety.

Purpose of the Study:

• To develop a more accurate virtual guidewire model for endovascular simulation.
• To integrate real flexural modulus (FM) measurements into a mass-spring guidewire model.
• To improve the fidelity of guidewire behavior replication in virtual environments.

Main Methods:

• Measured flexural modulus (FM) of seven common guidewires using three-point and two-point bending tests.
• Developed seven distinct particle-based models with variable FM links.
• Integrated measured FM values into the virtual models via trial and error, matching real to virtual bending coefficients.

Main Results:

• Successfully integrated real flexural modulus data into the guidewire simulation model.
• The mass-spring representation accurately captures guidewire flexibility and deformation.
• The model replicates the complex behavior of guidewires within virtual vasculature.

Conclusions:

• The developed guidewire model with integrated real flexural modulus provides a faithful replication of physical guidewire behavior.
• This advancement significantly enhances the realism and effectiveness of simulation-based training for endovascular procedures.
• Accurate simulation is vital for improving skills in interventional radiology.