PSI - Issue 49

Sara Bridio et al. / Procedia Structural Integrity 49 (2023) 67–73 S. Bridio et al. / Structural Integrity Procedia 00 (2023) 000–000

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3. Results Fig. 3 shows the results of the combined EVT simulation in the patient-like vascular model, from the deployment of the stent (frame 1) to the final retrieval of stent and thrombus inside the BGC (frame 6). These simulation frames clearly show the rotation of the thrombus during the procedure. The proposed algorithm allowed to select the proper portion of thrombus surface for the application of the aspiration pressure in each restart of the simulation (Fig. 4). The effect of the aspiration pressure on the thrombus is visible from frame 4, when the thrombus is closer to the BGC.

Fig. 3. Results of the combined EVT simulation in the patient-like vessel.

Fig. 4. Different selected portions of the thrombus for the application of the aspiration pressure in different time points of the simulation (the selected elements are contoured in black). 4. Discussion In this work, an automatic algorithm was developed for a realistic application of the aspiration pressure exerted by the BGC in a combined EVT simulation. The use of in silico simulation of the EVT procedure is gaining much relevance for the investigation of the thrombus-device interactions and for understanding the causes of unsuccessful outcomes. While several computational studies can be found in the literature replicating the EVT procedure with only