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.
Results
Showing 1 to 12 of 12 for “"Cerebral aneurysms"”.
-
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 …
-
Pulsatile Flow in Computational Modelling of Thrombosis in Cerebral Aneurysms
… number of 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 …
-
Circulus arteriosus cerebri: Anatomical variations and their correlation to cerebral aneurysms
… in the circulus arteriosus cerebri and cerebral aneurysm formation. The brains of 39 cadavers at the Faculty of Health Sciences were removed and the circulus arteriosus dissected. In addition, 113 patients who underwent a MRI or MRA of the circulus arteriosus cerebri at the Department of …
-
Fabrication and characterization of a magnetic bacterial nanocellulose for neurovascular reconstruction of cerebral aneurysms
A cerebral aneurysm is a condition where a defect protrudes out the arterial wall, and which is formed due among other reasons to abnormal high hemodynamic stresses that contribute to deterioration and dilation of the blood vessel. A desirable treatment of cerebral aneurysms is the complete cut-off …
-
Hemodynamic analysis of flow near cerebral aneurysms: Insight into aneurysm formation and effects of intervention
… in the initiation and progression of cerebral aneurysms. It is composed of two major sections, where the first part attempts at understanding the hemodynamic cause and effect linkages leading to aneurysm formation and it is shown that low and oscillatory shear could lead to aneurysm …
-
CT angiographic detection of cerebral aneurysms in patients with subarachnoid haemorrhage in a South African institution
… location, morphology and size characteristics of cerebral aneurysms in patients presenting to Groote Schuur hospital with either subarachnoid haemorrhage or 3 rd nerve palsy have not been established by a formal audit. Objectives To determine the patient demographics, frequency of CT angiographic …
-
Computational model of thrombosis in cerebral aneurysms for predicting clotting outcomes in flow diverter treated patient-derived geometries validated with novel PIV-based ln vitro clotting flow experiment
… number of computational models of thrombosis in cerebral aneurysms designed with consideration towards clinical use and research. Many thrombosis models include complicated clotting mechanisms, which can be computationally expensive, and present a challenge to comprehensively validate in vitro …
-
A dissection and angiographic study of anatomical variations in the anterior communicating artery complex in a South African sample
… of the A1 and A2 segments of the anterior cerebral artery (ACA) and the anterior communicating artery (ACoA). The ACAC is said to be the most frequent site of aneurysms and anterior cerebral circulation variations. Clear correlation between cerebral arterial circulation variations and …
-
Focus and context for volume visualization
… application: the effective visualization of cerebral aneurysms. This is a very important issue in the field of neurosurgery, usually carried out through the visualization systems offered by the imaging equipment being used. However, the use of those systems in the operating theatre is not …
-
Development of bioabsorbable braided vascular scaffolds for the intracranial circulation
… of the population. The treatment techniques of cerebral aneurysms have significantly improved in the past decade, transitioning from open surgical procedures to less invasive endovascular procedures. A disruptive technology in aneurysm treatment was the advent of the metal flow-diverting stent, …
-
The Development of a Reduced Order Model for Prediction of Haemodynamic and Biochemical Changes in a Computational Cerebral Aneurysm Thrombosis Model
A cerebral aneurysm is a pathological, localized, and irreversible cerebral arterial vessel wall dilation. Cerebral aneurysms pose a risk of subarachnoid haemorrhage if they rupture. A ruptured cerebral aneurysm could lead to mortality or morbidity. It is therefore important for clinicians to be …
-
Patient-Specific Computer Modeling of Blood Flow in Cerebral Arteries With Aneurysm and Stent
… computer modeling of blood flow in cerebral arteries with aneurysm and stent. These techniques are used in conjunction with the core computational technique, which is the space–time version of the variational multiscale (VMS) method and is called “DST/SST-VMST.” The special …