Position based catheterization and angiography simulation

Effective and safe performance of cardiovascular interventions requires excellent catheter / guidewire manipulation skills. These skills are currently mainly gained through an apprenticeship on real patients, which may not be safe or cost-effective. Computer simulation offers an alternative for core skills training. However, replicating the physical behaviour of real instruments navigated through blood vessels is a challenging task. In this work, we adopt the position based method to fast and robust model the dynamic behavior of catheter / guidewire and contrast medium propagation in vascular interventional radiology. Specifically, we simulate the elastic rods according to the cosserat theory and the contrast medium propagation is controlled by an advection-diffusion equation. Besides, we employ bounding volume hierarchy (BVH) to achieve fast and accurate collision detection between vessels and rods and compute the response with the Coulomb's law. Experimental results demonstrate the visual plausibility, robustness and efficiency of our method in interactive catheterization simulation.