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 81 for “"Coronary arteries"”.
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Biological relations of the aorta and coronary arteries
… consequently the cross section of the aorta and coronary arteries.
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Ultrasonic Characterization of Human Coronary Arteries and Atherosclerotic Plaques
… of ultrasound with normal and pathological coronary artery tissues are described in this dissertation. Ultrasound is a modality capable of visualizing and characterizing the lesions that define atherosclerosis. A better understanding of the physics underlying the mechanisms by which …
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Investigation of the Hemodynamics of Coronary Arteries - Effect of Stenting
… most common modality of treatment of occluded arteries is the use of stents. Despite the widespread use of stents, the incidence of post-stent restenosis is still high. The study of stents in conditions that are similar to in-vivo conditions is limited. This work tries to address the behavior …
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Effects of Long-Term, High-Altitude Hypoxemia on Fetal Ovine Coronary Arteries
… hypoxemia on the contractility of fetal coronary vessels, namely the left circumflex, left anterior descending, and right coronary arteries. We have found that in response to chronic hypoxia, isolated fetal ovine coronary arteries exhibit attenuated contractile responsiveness to potassium …
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Flow effect on thrombus formation in stenosed coronary arteries: a computational study
Thrombotic complications often occur in stenosed coronary artery, causing permanent damage and even death. Although the exact factors and events leading to thrombus formation are not entirely known, the local rheological conditions as well as the different tendency for clotting of the blood of each …
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The Influence of the Anger Expression on Health Behavior in Patients with Coronary Arteries Disease
본 연구는 관상동맥질환자의 분노표현유형이 건강행위에 미치는 영향을 파악하기 위한 서술적 조사연구이다. 이를 위해 2012년 1월부터 3월까지 K대학교 부속병원에서 협심증 또는 심근경색으로 관상동맥 중재술을 받은 후 외래 및 응급실에서 추적관리를 받고 있는 환자 중 99명을 임의 표출하였다. 연구도구로 분노표현방식은 Spielberger가 개발하고 전겸구(1997)가 한국판으로 수정․보완한 분노표현 척도(State Trait Anger Expression Inventory, STAXI)를 사용하였고 건강행위 도구로는 Walker, …
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The Non-genomic Signaling Pathways Mediated By G-protein Coupled Estrogen Receptor 1 (GPER) In Coronary Arteries
Coronary heart disease (CHD) remains the leading cause of death throughout the world, and postmenopausal women are at particularly high risk for CHD. A promising new avenue of study is the novel G protein-coupled estrogen receptor (GPER) which mediates estrogen action. The major purpose of my …
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Polo-Like Kinase 1 and Smooth Muscle Cells in Coronary Artery Bypass Conduits and Coronary Arteries Following Angioplasty
… in SMCs, following percutaneous transluminal coronary angioplasty (PTCA) and coronary artery bypass grafting that may contribute to greater SMC proliferation in the injured versus uninjured blood vessels in swine.|Approach and Results — At the basal level, higher expression of PLK1 and pPLK1 …
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The role of lymphatic vessels draining the wall of aorta and coronary arteries in the pathogenesis of atherosclerosis induced by cholesterol/casein diet
… vessels draining the wall of the aorta and coronary arteries in the pathogenesis of atherosclerosis. Twenty four male New Zealand White rabbits were randomly divided into 3 groups: 8 fed a control diet, 8 fed a 5% cholesterol diet and 8 fed a 1% cholesterol diet. The animals were sacrificed …
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Blood Vessel Segmentation and shape analysis for quantification of Coronary Artery Stenosis in CT Angiography
… for quantitative vascular shape analysis of the coronary arteries, which constitutes an important and fundamental component of an automated image-based diagnostic system. Firstly, an automated vessel segmentation algorithm is developed to extract the coronary arteries based on the framework of …
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Resistance to Apoptosis in Smooth Muscle Cells and Stent-Induced Stenosis in Coronary and Peripheral Arteries
… of lesion development. It was hypothesized that arteries from alternate embryological origins react differently with regards to the development of in-stent stenosis and that vascular smooth muscle cells derived from different arteries are unique with regards to their apoptotic responses. To test …
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Estudio mecánico de las arterias coronarias humanas y sus sustitutos vasculares
… desde el punto de vista mecánico. ABSTRACT Coronary artery disease is the most significant cardiovascular problem and is the leading cause of death in developed countries. Coronary problems emerge from the obstruction of coronary arteries. In many cases, invasive procedures, such as …
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Coronary Artery Calcification and Its Progression in Cancer Patients
… complex pathologic process that can involve the coronary arteries, is the most common cause of ischemic heart disease and research has suggested cancer and its therapies may be involved in its development.
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Morphological And Histological Analysis Of Vascular Conduit Options Used For Coronary Artery Bypass Grafting - A South African Perspective
… is the leading cause of death worldwide and coronary artery disease (CAD), largely attributed to occluded coronary arteries, is the most common cardiovascular disease. Coronary artery bypass grafting (CABG) is considered the gold standard invasive intervention to treat CAD. This procedure …
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Use of fluorescent micropsheres to measure coronary flow reserve in rat animal model
… from reduced or blocked blood flow through major coronary arteries, resulting in permanent damage to heart muscle. Coronary blood flow (CBF) is thus important to measure in experimental animal models of heart disease. A standard method to measure CBF uses tracer microspheres (O = 15 um) injected …
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Computational model of coronary tortuosity
Coronary tortuosity is the abnormal curving and twisting of the coronary arteries. Although the phenomenon of coronary tortuosity is frequently encountered by cardiologists its clinical significance is unclear. It is known that coronary tortuosity has significant influence on the hemodynamics …
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FUNCTIONALIZATION OF A NOVEL ELASTOMERIC BIOMATERIAL FOR VASCULAR TISSUE ENGINEERING
… atherosclerosed small diameter (< 6 mm) coronary arteries, but is subject to intimal hyperplasia, thrombosis, and accelerated atherosclerosis. To date, no biomaterial functions as a substitute for autologous vein graft. A novel composite material composed of electrospun poly(glycerol …
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Development of a Biaxial Testing System for Research of Soft Tissue Biomechanics using Laboratory Models
… the cap tissue layer of a fibroatheroma in human coronary vessels is considered the key event leading to the formation of a thrombus and myocardial infarction, resulting in more than half a million deaths in the US every year. In this study, we are interested in investigating the biomechanics of …
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Coronary Artery Pathology in Patients with Peri-implantitis // Патология на коронарните артерии при пациенти с периимплантит
… resorption — and pathological changes in the coronary arteries. The study aims to evaluate whether patients with peri-implantitis exhibit a higher prevalence and more severe forms of coronary artery disease. Additionally, a comparison was made between coronary artery pathology in patients with …
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Regulatory Mechanisms Underlying the Differentiation of Mesenchymal Stem Cells to Endothelial Cells
… often results from atherosclerotic occlusion of coronary arteries. Coronary angioplasty is performed to restore cardiac blood flow and function. Angioplasty is the most widely used interventional technique for coronary occlusion events. However, long term benefits are curtailed by vascular …
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