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Personalized endovascular stent grafts : developing a phantom aneurysm model to test personalized stent grafts.

Loon, Joyce van (2020) Personalized endovascular stent grafts : developing a phantom aneurysm model to test personalized stent grafts.

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Abstract:Endovascular stent grafts are used in endovascular aneurysm repair (EVAR). EVAR is a minimally invasive surgery and the gold standard in abdominal aneurysm repair and excludes the aneurysmal sac using a stent graft. A higher reintervention rate is seen for EVAR compared with open repair, often due to endoleak or migration of the stent graft. Production of personalized stent grafts might solve these problems, with the result that more patients can be treated endovascular and possible improvement of the clinical outcome. To compare the straight tubular stent grafts and the personalized stent grafts an aortic model was created. An aortic model and stent grafts were 3D printed. Then the wall distention in the aorta models was measured when a straight stent graft or personalized stent graft were inserted. The results show that the materials used in this research for 3D printing are sub-optimal. We need a more flexible material for the stent grafts, which has similar properties as the current used nitinol stent grafts. However, in some cases a better sealing with the personalized stent grafts was seen in the obtained CT-scans. The results offer insight in the possibilities and difficulties of 3D printing and the influence of a personalized stent graft in real patient data.
Item Type:Essay (Master)
Faculty:TNW: Science and Technology
Programme:Technical Medicine MSc (60033)
Link to this item:http://purl.utwente.nl/essays/80869
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