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Congress: ECR25
Poster Number: C-14646
Type: Poster: EPOS Radiologist (scientific)
Authorblock: M. Wojtuń1, A. Kazimierczak2, M. Holicki1, M. P. Kawa1, A. Falkowski1, P. Gutowski2, P. Rynio2; 1SZCZECIN/PL, 2Szczecin/PL
Disclosures:
Maciej Wojtuń: Nothing to disclose
Arkadiusz Kazimierczak: Nothing to disclose
Mariusz Holicki: Nothing to disclose
Milosz P. Kawa: Nothing to disclose
Aleksander Falkowski: Nothing to disclose
Piotr Gutowski: Nothing to disclose
Paweł Rynio: Nothing to disclose
Keywords: Arteries / Aorta, Interventional vascular, Vascular, CT-Angiography, Ultrasound-Colour Doppler, Ultrasound-Power Doppler, Computer Applications-3D, Experimental investigations, Stents, Aneurysms, Education and training
Purpose Patients with abdominal aortic aneurysm (AAA) are treated with method of endovascular treatment of abdominal aortic aneurysms (EVAR) (Fig. 1). Even though, the  EVAR grafting has started to becomethe standard of care for abdominal aortic aneurysm repair over the past decades, the troubles related to long-term durability and necessities for re-intervention are still the worries of vascular specialists, who are performing EVAR technique in their patients with AAA every day around the world. Sometimes, vascular surgeons and interventional radiologists due...
Read more Methods and materials Using four stent-grafts (Anaconda®, Endurant®, Treo®, Zenith Spiral-Z®) of different manufacturers implanted into patient-specific 3D printed models of iliac artery with different angles (75°/90°/105°), we created the potential for high-fidelity modelling of challenging arterial angulations to achieve their spatial relations (Fig. 5).  [fig 5] Fig. 5 Application of 3D-printed phantom of sharp arterial kink with implanted endograft in the flow circulatory system for the experimental measurement of flow velocity with linear probe connected to Toshiba Aplio 400 ultrasound apparatus.The experimental in vitro models...
Read more Results The whole analysis of the flow velocity ratios obtained from tested 3D-printed models of different iliac artery angulations with implanted stent grafts is presented in Table 1. The smallest increase in flow velocity distally to severe bending was obtained in Anaconda stent grafts group. These results indicate that O-ring-shape stent-grafts have superior flexibility and conformability at various tested angles. [fig 7] Table 1. Flow velocity ratio analysis for different endograft at various angles. In-stent graft flow velocity ratio was defined as the ratio...
Read more Conclusion Our results highlight the potential benefit of O-ring-designed stent-graft for treating severely-bended iliac arteries as confirmed in 3D-printed model ultrasound analysis with the experimental fluid dynamic simulation.
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GALLERY