Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"stent-graft"”.
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Clinical Aspects on Chimney Stent Graft Technique in Endovascular Repair of the Aorta.
… proximal and distal sealing zone for the aortic stent graft. Fenestrated and branched stent grafts have made the repair possible for complex but elective cases that do not have an adequate sealing zone. Urgent complex cases and patients with midaortic occlusive diseases do not have any …
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Patient-specific thoracic endovascular aoratic repair (TEVAR)
… creating inexpensive patient-specific EVAR stent-grafts, conforming to the unique anatomy of the patient. After investigating the range of electrospinning shape capabilities on idealised stent-graft geometries (straight, tapered, elliptical, and curved), CT scans was used to create blood and …
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Quantifying AAAs and developing FEA models for stent grafts
… (EVAR) is preferred, via the introduction of a stent graft into the aneurysmal region. In this thesis, finite element analysis (FEA) techniques have been developed to model the AnacondaTM stent graft. The aim is to produce the necessary numerical tools to allow for personalized EVAR simulations …
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Assessing the Near-Wall Hemodynamics in the Left Coronary Artery Using CFD
… This can be a useful insight in coronary stenting, solid and stress analysis of biodegradable stent and can also provide insight into stenting for more complex arterial networks like brain stent grafts. In addition, it is important to understand the hemodynamics of the LCA before carrying …
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A Novel Multiblock Immersed Boundary Method Enabling High Order Large Eddy Simulation Of Pathological And Medical Device Hemodynamics
… evaluating medical device performance such as stent grafts and mechanical heart valves. Previous studies indicate the presence of highly disturbed, transitional and mildly turbulent flow in healthy and pathological arteries. Accurate simulation of the transitional flow requires high order …
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The development of an integrated modelling framework to aid with the design of endovascular devices
… a case study for which Vascutek's AnacondaTM stent graft system was chosen. In its final iteration the framework took the form of a series of python scripts which could be imported into Abaqus 6.11 to generate a variety of FE studies. For the development of the python scripts, a generalised …
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Pathologisch-anatomische und immunhistologische Untersuchungen des ischämischen Schweinemyokards
… (German land breed) by placement of a modified stent graft in the left anterior descending artery (LAD), which initially produced 75% stenosis, followed by a slow complete occlusion. Wall motion abnormalities were investigated by Magnetic Resonance Imaging (MRI) and ultrasound images at day 7 …
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Imaging of abdominal aortic aneurysm disease activity and implications for endovascular aneurysm repair
… develop complications such as leaks behind their stent graft (endoleak) which reduces the long-term benefit of EVAR. Here, we explore the use of two potential imaging biomarkers, periaortic adipose tissue (on computed tomography) and sodium [18F]fluoride positron emission tomography, in different …
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Der Stellenwert der Hemobahn-Viabahn-Endoprothese in der Therapie chronisch- komplexer Läsionen der Arteria femoralis superficialis
… betrug 55 Monate. Der technische Erfolg der Stent-Implantation lag bei 98,3%. Die primären versus sekundären Offenheitsraten in den ersten 30 Tagen nach HVE-Applikation waren 90% vs. 95%. 59 primären Interventionen stehen 91 Gesamtinterventionen gegenüber. Die primären/sekundären …