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Real-Time Simulation of Contrast Media Diffusion Based on GPU

In this paper, a new contrast media diffusion simulation algorithm is proposed for minimally invasive vascular interventions. On the basis of smoothed particle hydrodynamics (SPH), the algorithm could be mainly divided into two parts: fluid-fluid interaction and fluid-solid interaction. In the fluid-fluid interaction, an adsorption model of iodine particles is built, and the adjacent blood flow particles around that could be got quickly by Eulerian grid and Space Sparse Hash. In the fluid-solid interaction, coulomb friction model is used to realize the frictional contact between the fluid particles and the inner walls of vessel. For improving the computational speed, the algorithm uses multi-thread parallel technology to address the complex diffusion problem of contrast media on computer unified device architecture (CUDA). The experimental results show that this algorithm is feasible, and could greatly enhance the development effect of blood vessels with real time performance, especially the capillaries.