Analytical guide wire motion algorithm for simulation of endovascular interventions

Abstract

Performing minimally invasive vascular interventions requires proper training, as a guide wire needs to be manipulated, by the tail, under fluoroscopic guidance. To provide a training environment, the motion of the guide wire inside the human vasculature can be simulated by computer. Such a simulation needs to be based on an algorithm that is both realistic and fast. To meet these two demands, an analytical solution to the problem of guide wire motion has been derived, using a new parametrisation of guide wire shape. The algorithm is highly generic, is entirely based on elementary physics and has good convergence properties (accuracy of 22 micron after two iterations). In an experimental validation of the algorithm in a planar model, the RMS of the spatial discrepancy between the real and simulated catheter positions was about 10% of the lumen size. Comparison of the simulated guide wire motion with 3D rotational angiography data of a real guide wire advanced in a plastic phantom of the cerebral vasculature showed that the new algorithm produced realistic results.

Simulator for Minimally Invasive Vascular Interventions: Hardware and Software

“…The model of Konings et al (2003) considers the WI as a discrete set of joints at positions x 0 , . .…”

“…This work is based on the developments of Konings et al (2003) in an analytical approximation to the problem of the guidewire. The algorithm is highly generic and has good convergence properties.…”

“…• In comparison with the paper of Konings, van de Kraats, Alderliesten, and Niessen (2003): -The WI model is more accurate, especially when the bending is large. -The update equations are simpler and the numerical calculations faster.…”

Cognitive AutonomouS CAtheters Operating in Dynamic Environments

“…CASCADE progresses the work by Konings et al who predict the behaviour of a guidewire by minimizing the joint energy of guidewire and surrounding vessel. [34][35][36][37][38] The underlying idea is that since the overall motions are relatively slow, a quasi-static approximation of the catheter/vessel is justifiable. Under this assumption the catheter comes at rest in an equilibrium state after each simulation step taking on a shape where the aggregated energy (of catheter and vessel) is minimal.…”

A Study of the Relationship between the Microcatheter Shape and Stability by Numerical Simulation

“…For this reason, it is difficult to accurately predict the behavior of the device during treatment. If deformation and behavior of devices in blood vessels can be clarified using a simulator, [1][2][3][4][5][6] it is expected to contribute to the selection of appropriate devices and their manipulation during endovascular procedures.…”