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 20 of 89 for “"Aneurysms"”.
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Left ventricular submitral aneurysms
… management of left ventricular submitral aneurysms (LVSMA). These aneurysms are a well recognized but relatively rare disease found commonly in patients from African ancestry. The series comprises 20 consecutive patients treated surgically at three institutions from 1985 to 2002. Natural …
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The Acoustics of Cerebral Aneurysms
… also a leading factor of disability. Ruptured aneurysms are the most common cause of spontaneous subarachnoid haemorrhage, a devastating type of stroke. Aneurysms are localised expansions of blood vessels. Brain aneurysms most often form a bulge at a blood vessel bifurcation. The possible …
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Characterizing A Novel Genetic Locus Associated With Familial Co-Occurrence of Thoracic Aortic Aneurysms and Intracranial Aneurysms
… mapped for the familial form of Thoracic Aortic Aneurysms (TAA), and many causal mutations have been identified for this disease. Intracranial Aneurysms (ICA) also show linkage heterogeneity, but no mutations have been identified causing familial ICA alone. Here, we characterized a large family …
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Detection of micro-aneurysms in low-resolution color retinal images
… and optimize an algorithm to detect micro-aneurysms and small round hemorrhages in low-resolution color retinal images. Our algorithm is adapted from a micro-aneurysm detector developed for high-resolution angiographic films. It consists of pre-processing, morphological filtering, …
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Can Mesenchymal Stem Cells Inhibit the Formation of Saccular Aneurysms?
Intracranial saccular aneurysms are pathological dilations of cerebral blood vessels that can spontaneously rupture leading to significant morbidity and mortality. Our current understanding of saccular aneurysm pathogenesis involves a complex interplay of predisposing factors and inflammatory …
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Pulsatile Flow in Computational Modelling of Thrombosis in Cerebral Aneurysms
… computational models of thrombosis of cerebral aneurysms designed with consideration towards clinical use and research. Their model, amongst many others, utilizes computationally inexpensive steady flow conditions. However, pulsatile flow better characterizes blood flow in-vivo. Steady flow is …
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THE ROLE OF CAVEOLAE IN THE FORMATION OF ABDOMINAL AORTIC ANEURYSMS
… the level of oxidative stress and MMP's in aneurysms. We found an increased expression of MMP-2 and MMP-9 in vessels of WT mice displaying aneurysms. This increase in expression was not observed in Cav-1 knockout mice. Furthermore, KO mice showed less oxidative stress then their WT …
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Circulus arteriosus cerebri: Anatomical variations and their correlation to cerebral aneurysms
… these samples the anatomical variations and any aneurysms present were documented. The external diameters of the arteries forming the circulus arteriosus cerebri were also measured. No aneurysms were found in the cadaver sample, thus the correlation could not be tested. In the sample of images …
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Advanced computer modeling of abdominal aortic aneurysms to predict risk of rupture
… it is observed that rupture sometimes occurs in aneurysms with smaller diameter, thereby creating the need for better criteria for surgical intervention. Therefore, (biomechanical) indicators of AAA rupture were introduced as a superior criterion to the maximum diameter for predicting the risk …
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Transcriptomic Analysis for the Identification and Prioritization of Treatment of Abdominal Aortic Aneurysms
Abdominal aortic aneurysms are pathological dilations of the abdominal aorta, characterized by a high mortality rate, and a lack of effective prognostic predictors. As the disease progresses, the aortic wall becomes significantly degraded and eventually the structure is compromised, leading to …
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Computational model of intraluminal thrombus growth in abdominal aortic aneurysms with fibrin generation
Abdominal aortic aneurysms affect 0.2% of the population and are closely associated with intraluminal thromboses (ILTs) that develop in the sac. Advanced imaging and treatment techniques are available, however there is room for improvement in the methods used to predict the outcome or necessity of …
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The Role of Autophagy in the Pathogenesis and Clinical Course of Abdominal Aortic Aneurysms
Abdominal aortic aneurysm (AAA) is a permanent progressive focal dilation of the aorta that is â Ľ 50% of the normal aortic diameter, due to loss of wall structural integrity. A fatal outcome of the progressive dilation due to the compromised aortic wall integrity is rupture. Mortality associated …
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Fabrication and characterization of a magnetic bacterial nanocellulose for neurovascular reconstruction of cerebral aneurysms
… blood vessel. A desirable treatment of cerebral aneurysms is the complete cut-off of the defect from the parent artery with minimum luminal obstruction. Even though different approaches have shown to exclude the defect from the parent artery, the main shortcoming remains the delayed …
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Development of a novel uncovered stent system for the management of complex aortic aneurysms
… to open surgery for the treatment of aortic aneurysms (AA). However, standard EVAR is not applicable to complex AA with involvement of vital branches, which could be occluded by the endograft. As an emerging technique, the concept of multiple overlapping uncovered stents (MOUS) have been …
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