Abstract
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.
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Foundation item: the National Natural Science Foundation of China (Nos. 61190120, 61190124 and 61271318) and the Biomedical Engineering Fund of Shanghai Jiao Tong University (No. YG2012ZD06)
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Luo, Ms., Xie, Hz., Xie, L. et al. Robust and real-time guidewire simulation based on Kirchhoff elastic rod for vascular intervention training. J. Shanghai Jiaotong Univ. (Sci.) 19, 624–629 (2014). https://doi.org/10.1007/s12204-014-1551-1
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DOI: https://doi.org/10.1007/s12204-014-1551-1