Section: New Results

Interactive Blood-Coil Simulation in Real-time during Aneurysm Embolization

We introduced a complete process for patient-specific simulations of coil embolization, from mesh generation with medical datasets to computation of coil-flow bilateral influence. We propose a new method for simulating the complex blood flow patterns that take place within the aneurysm, and for simulating the interaction of coils with this flow. Porous media was introduced to model the impact of the coil onto the flow (as a change of flow pattern and a decrease of velocity) from a statistical point of view, while the reverse effect on the coil (as a shift in the blood flow) was described by the local drag force. By solving the Navier-Stokes Equations with extra porous terms using the DEC method, the velocity field of blood flow was obtained, and then used to compute the drag force applied on the coil during aneurysm embolization. This work was published in the Computers & Graphics journal [13] .

Figure 8. Coil embolization: the simulated blood flow velocity magnitude on (a) two sections (b) before the embolization, (c) after the first coil deployed, (d) after the final coil.