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 14 of 14 for “"arterial tissue"”.
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The transport properties of arterial tissue.
Thesis. 1975. Ph.D.--Massachusetts Institute of Technology. Dept. of Chemical Engineering.
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Effect of microstructure on mechanical behaviour of arterial tissue
… and mechanical, including fracture behaviour of arterial tissue. Unnotched and notched mechanical tests were performed on tissue samples from aneurysm-affected aortas. Mechanical parameters of ultimate material strength and extreme extensibility were measured, showing arterial layer and direction …
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Multi-Frequency Processing for Lumen Enhancement with Wideband Intravascular Ultrasound
… level of blood scattering echoes may obscure the arterial lumen and make image interpretation difficult. Blood backscatter levels increase with transmission center frequency at a much greater rate compared to arterial tissue. These different frequency dependencies provide a potential method to …
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The role of hydrodynamic interactions in the dynamics and viscoelasticity of actin networks
… initially we focus on elastic properties of arterial tissue in the pm to mm ranges via an experimental top-down approach. We develop a combined robust registration and inverse elasticity method to investigate the mechanical properties of arterial tissue. We quantify the accuracy of this …
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Effects of Senescence on Vascular Smooth Muscle in the Yellow Mud Turtle "Kinosternon flavescens" (Family "Kinosternidae")
… similarities to age-related changes in mammals. Arterial sections from a wild population of turtles ranging in age from 6 to 3% years were examined histologically. Connective tissue-stained arteries showed statistically significant deposition of connective tissue in the tunica media with …
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Identification of potential clinical indicators of carotid plaque disruption using patient specific finite element modelling
… that the stress distribution within the arterial wall may provide an indicator of atherosclerotic plaque disruption. Many studies have used patient specific finite element models to estimate the stress environment in atherosclerotic plaques, attempting to correlate the magnitude of stress …
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Model parameter estimation of atherosclerotic plaque mechanical properties : calculus-based and heuristic algorithms
… of data on the mechanical behavior of soft arterial tissue yet (ii) it is the biomechanics that is able to provide invaluable insight into patient-specific disease evolution and plaque vulnerability. Arterial elasticity reconstruction is a venture that combines imaging, elastography, and …
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Mechanical properties of arterial wall
… to be correlated with the overstretching of the arterial wall during an angioplasty procedure. It has been proposed that slow balloon inflation results in lower intramural stresses, therefore minimizing vascular injury and restenosis rate. The analysis of the biomechanics of the arterial tissue …
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IL-25 and B cells in atherosclerosis
… the formation of lipid rich plaques within the arterial tissue. It is the most common cause of cardiovascular disease leading to clinical manifestations of coronary artery and cerebrovascular disease. Immune responses targeting modified low density lipoprotein (LDL) play an important role in …
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Molecular imaging of calcification and inflammation in aortic valve disease and atherosclerosis
… uptake in aortic valvular, coronary and carotid arterial tissue was assessed. Techniques for uptake quantification were evaluated for accuracy and reliability. Tissue uptake was related to established clinical and image-based variables as well as prospectively gathered clinical outcome data. …
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Diabete ed ischemia critica degli arti inferiori. Studio del danno della parete arteriosa e del ruolo dell'endotelio circolante nella riparazione tessutale e nella neoangiogenesi
… characterization was performed on arterial tissue samples under a light microscope. Flow cytofluorimetric analysis was used to quantify CECs in peripheral blood samples. "In situ" expression of the Vascular Endothelial Growth Factor (VEGF) and Metalloproteinase 9 (MMP-9) transcripts …
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Ultrasonic Characterization of Human Coronary Arteries and Atherosclerotic Plaques
… 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 ultrasound interacts …
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Assessment of Mechanical and Hemodynamic Vascular Properties using Radiation-Force Driven Methods
… in addition to involving pathological changes in arterial tissue, is also a</p><p>hemodynamic remodeling problem. As a result, integrating techniques that can</p><p>estimate localized hemodynamics relevant to CVD remodeling with existing ARF based</p><p>elastography methods may provide a more …
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Uso de la matriz extracelular como material para ingeniería de tejidos
Introducción: La evaluación de injertos vasculares de submucosa de intestino delgado para la regeneración de vasos sanguíneos ha producido una permeabilidad variable (0-100%) que ha sido concurrente con la variabilidad en las técnicas de fabricación. Metodología: Investigamos los efectos de …