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 153 for “"hemodynamics"”.
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Microviscometric Analysis of Microvascular Hemodynamics in Vivo
… broad areas of cardiovascular research including hemodynamics, inflammation, endothelial-cell mechanotransduction, angiogenesis, and tissue engineering.
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Teaching physiology through interactive simulation of hemodynamics
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1991.
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Controlled cross circulation: effects on donor hemodynamics
Controlled cross circulation was performed in six pairs of dogs to assess hemodynamic changes in the donor dog. Cardiopulmonary bypass was performed for 45 minutes, with an aortic cross clamp time of 3 5 minutes. Anesthesia was maintained in the donor dog with 1.8% end-tidal isoflurane. Parameters …
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Sensitivity of Hostile Hemodynamics to Intracranial Aneurysm Geometry
… treatment decisions, researchers have turned to hemodynamics, which are thought to contribute to the growth and rupture of IAs. Simulations using medical-image-based computational fluid dynamics (CFD) yield patient-specific risk parameters, but these parameters are often highly uncertain due to …
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Multiparametric Estimation of Brain Hemodynamics with MR Fingerprinting ASL
Cerebral perfusion is a process of delivering of blood to tissue capillary beds, supplying sufficient nutrients and oxygen to the brain. It is an important physiology indicator of brain function. The disorder of perfusion such as cerebral vascular disease leads to physiological changes and impaired …
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Analysis of local hemodynamics in central and peripheral arteries
… and peripheral arteries studying the local hemodynamics of the ascending aorta, the carotid artery and the femoral artery by analysing human, animal and in vitro data. Also, another aim is to introduce a technique for non-invasive determination of the local arterial distensibility, the wave …
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Investigation of the Hemodynamics of Coronary Arteries - Effect of Stenting
… dynamic geometry cause critical changes in local hemodynamics, namely altering the local pressure and velocity gradients. Increasing the stent length, reducing the transition length and increasing the overexpansion caused adverse flow conditions. From this work, detailed flow characteristics and …
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HEMODYNAMICS STUDIES OF THE PREOVULATORY FOLLICLE AND CORPUS LUTEUM IN CATTLE
… farms. Evaluation of follicle and corpus luteum hemodynamics by color-Doppler ultrasonography is becoming more commonly used in cattle reproductive management. Improved understanding of the relationships between size and blood flow of the preovulatory follicle (POF) and corpus luteum (CL) with …
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Cerebral Hemodynamics in High-Risk Neonates Probed by Diffuse Optical Spectroscopies
Advances in medical and surgical care of the critically ill neonates have decreased mortality, yet a significant number of these neonates suffer from neurodevelopmental delays and failure in school. Thus, clinicians are now focusing on prevention of neurologic injury and improvement of …
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Optimization of Hybrid Hemodynamics from Mechanical Support Devices in Cardiogenic Shock
Cardiovascular mechanical circulatory support (MCS) offers the promise of forward blood flow maintenance and distal tissue perfusion without taxing the failing heart. However, there are no firm determinants of device initiation and titration, and demonstration of definitive clinical benefit remains …
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Development and Evaluation of Generative Adversarial Networks for Predicting Central Hemodynamics
… in using such proxy signals to infer central hemodynamics, no existing studies have leveraged these data to provide a comprehensive assessment of patient hemodynamics. This thesis investigates the use of generative adversarial networks (GANs) in combination with cardiovascular mechanistic …
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Assessing the Near-Wall Hemodynamics in the Left Coronary Artery Using CFD
… investigate the flow mechanics and the near-wall hemodynamics associated with the different take-off angles in the left coronary artery of the human heart. From this study, we will be able to evaluate if the increase in the take-off angles of the left coronary artery will significantly increases …
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3-DIMENSIONAL NUMERICAL AND EXPERIMENTAL STUDIES TO MODEL ARTIFICIAL HEART VALVES HEMODYNAMICS
… Fluid Dynamics, we are able to study the complex hemodynamics in details such as stagnation, recirculation zones and shear stresses. In this research, we established a numerical model using arbitrary Lagrangian Eulerien to study the hemodynamic performance of a bileaflet mechanical heart valve. …
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Cerebral Hemodynamics and Its Oxygenation: Study of Their Baseline and Spontaneous Oscillation
… been especially useful for in vivo monitoring of hemodynamics and oxygen saturation in tissue. For this work, I have developed a large-ranged multidistance probe for NIBS, which allows measurements of cerebral hemodynamics and oxygen saturation. The measurements on the adult forehead were analyzed …
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Cerebral hemodynamics and oxidative metabolism dynamics observed by calibration of functional MRI
Thesis (Ph. D.)--Massachusetts Institute of Technology, Whitaker College of Health Sciences and Technology, 1998.
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Assessment of Peripheral and Central Hemodynamics During Leg Exercise With "Blood Flow Restriction"
“Blood flow restriction” (“BFR”) is a type of exercise training where a pneumatic cuff is applied to the proximal portion of an exercising limb. In “BFR”, cuff inflation to 40% of an individual’s arterial occlusion pressure (AOP; cuff pressure which fully occludes limb arterial flow at rest) is …
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Impact of Prolonged Sitting on Central Hemodynamics: Role of Intermittent Pneumatic Compression Therapy
… sitting similarly impacts central cardiovascular hemodynamics and vascular stiffness is unknown. <strong>Purpose: </strong>Determine if prolonged sitting increases central blood pressure, aortic pulse wave reflection and vascular stiffness. <strong>Methods:</strong> In 10 subjects (Age=22±2 yrs, …
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