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 1343 for “"arterial"”.
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Arterial blood pressure estimation using ultrasound technology and transmission line arterial model
… the application of a transmission line model to arterial measurements in order to derive useful cardiovascular parameters. Non-invasive ultrasound techniques are used to make these measurements, which has several benefits over invasive methods such as arterial catheterization. However, invasive …
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Inflammation and arterial stiffness
Arterial stiffness is one of the earliest detectable manifestations of adverse structural and functional changes within the vessel wall. It is well known that increased large artery stiffness independently predicts the cardiovascular risk in a variety of populations. The identification of …
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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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Mitochondrial Regulation of Arterial Contractility
… functions of mitochondria in contractile arterial smooth muscle cells are poorly understood. Mitochondria can uptake calcium (Ca<sup>2+</sup>), but intracellular Ca<sup>2+</sup> signals that regulate mitochondrial Ca<sup>2+</sup> concentration ([Ca<sup>2+</sup>]<sub>mito</sub>) and …
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Clinical assessment of arterial stiffness
Increased arterial stiffness is associated with ageing, cardiovascular disease diabetes and renal failure. The aims of this thesis were to investigate the reproducibility of a tissue Doppler imaging (TDI) based ultrasound system to calculate indices of arterial stiffness, and to investigate changes …
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Design of mechanical arterial simulator
… as a new method of measuring blood pressure. An arterial simulator was designed and built for experiments. For this simulator, the vessels and bulk material were designed to meet the specifications of literature values of the physical dimensions and elastic modulus of carotid and brachial …
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Enfermedad arterial periférica de miembros inferiores
Enfermedad arterial periférica de miembros inferiores Abordaje inicial desde urgencias
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Travel Time Estimation on Arterial Streets
Estimation of real-time travel times on arterial streets has been a challenging task due to the intersection control delay as well as bottleneck delay from the downstream link. Therefore, few transportation professionals have conducted research at utilizing the dynamic flow methods to estimate …
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Automated Prediction of Hepatic Arterial Stenosis
… One of the causes of early transplant failure is arterial stenosis of the anastomotic junction. Early detection of transplant arterial stenosis can help prevent transplant failure and the need to re-transplant. Doppler ultrasound with manual measurements is the most common screening method, but it …
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Mathematical Models of Major Arterial Occlusion
… modeling to investigate the effects of major arterial occlusion in multiple tissues and vascular geometries. A network representing the vasculature of the rat hindlimb is used to study peripheral arterial disease characterized by femoral artery occlusion. This work couples responses that occur …
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Arterial blood pressure estimation using ultrasound
While blood pressure is commonly used by doctors as an indicator of patient health, the available techniques to measure the quantity suffer from many inconveniences such as cutting off blood flow, being cumbersome to use, being invasive, or being inaccurate. The research addresses many of these …
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Lane changing models for arterial traffic
Driving behavior models for lane-changing and acceleration form an integral component of microscopic traffic simulators and determine its value in evaluation of different traffic management strategies. The state-of-art model for lane changing adopts a two-level framework: the first level involves a …
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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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Wall shear measurements in arterial flows
Cardiovascular disease is responsible for the majority of morbidity and mortality in the United States. Physiologically healthy flow rarely displays turbulent behavior, thereby maintaining normal shear levels. The presence of vortical flow structures, however, alters the hemodynamical …
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Continuous estimation of cardiac output and arterial resistance from arterial blood pressure using a third-order Windkessel model
… is routinely monitored using various sensors. Arterial blood pressure (ABP) and heart rate (HR) are the most commonly recorded waveforms which provide key information to the ICU clinical staff. However, clinicians find themselves in many cases unable to determine the causes behind abnormal …
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ARTERIAL WAVEFORM MEASUREMENT USING A PIEZOELECTRIC SENSOR
… to develop a new method to monitor peripheral arterial pulse using a PVDF piezoelectric sensor. After comparing different locations of sensor placement, a specific sensor wrap for the finger was developed. Its composition, size, and location make it inexpensive and very convenient to use. In …
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El nefrograma isotópico en la hipertensión arterial
… mantenimiento y malignización de la hipertensión arterial, nos hemos planteado este trabajo de investigación, en el que por medio del Nefrograma isotópico, hemos estudiado el comportamiento de la función tubular renal en 100 enfermos no seleccionados, con diagnóstico clínico de hipertensión de …
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Clinical Prediction of Perinatal Arterial Ischemic Stroke
… with deficits lasting a lifetime. Perinatal arterial ischemic stroke (PAIS) is the most common type of perinatal stroke. Advances in neuroimaging have allowed for exceptional growth in stroke diagnosis. However, etiology is poorly understood. Many pregnancy, delivery, and fetal risk factors …
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