Virtual reality (VR) based vascular intervention training is a fascinating innovation, which helps
trainees develop skills in safety remote from patients. The vascular intervention training involves the use of
flexible tipped guidewires to advance diagnostic or therapeutic catheters into a patient’s vascular anatomy. In this
paper, a real-time physically-based modeling approach is proposed to simulate complicated behaviors of guidewires
and catheters based on Kirchhoff elastic rod. The slender body of guidewire and catheter is simulated using more
efficient special case of naturally straight, isotropic Kirchhoff rods, and the short flexible tip composed of straight
or angled design is modeled using more complex generalized Kirchhoff rods. We derive the equations of motion
for guidewire and catheter with continuous elastic energy, and then they were discretized using a linear implicit
scheme that guarantees stability and robustness. In addition, we apply a fast-projection method to enforce the
inextensibility of guidewire and catheter, while an adaptive sampling algorithm is implemented to improve the
simulation efficiency without reducing accuracy. Experimental results reveal that our guidewire simulation method
is both robust and efficient in a real-time performance.
LUO Mai-sheng1 (罗买生), XIE Hong-zhi2 (谢洪智), XIE Le3 (谢叻),CAI Ping4 (蔡萍), GU Li-xu1* (顾力栩)
. Robust and Real-Time Guidewire Simulation Based on Kirchhoff Elastic Rod for Vascular Intervention Training[J]. Journal of Shanghai Jiaotong University(Science), 2014
, 19(5)
: 624
-629
.
DOI: 10.1007/s12204-014-1551-1
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