Thèses sur le sujet « Bidimensional blood flow imaging »
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Norris, David G. « NMR flow imaging ». Thesis, University of Aberdeen, 1986. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU009818.
Texte intégralGates, Andrew R. C. « Blood flow studies using nuclear magnetic resonance imaging ». Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260496.
Texte intégralSun, Shen. « Laser Doppler imaging and laser speckle contrast imaging for blood flow measurement ». Thesis, University of Nottingham, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.604304.
Texte intégralNguyen, Hoang Cuong. « High speed processing for laser doppler blood flow imaging ». Thesis, University of Nottingham, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.517694.
Texte intégralFisico, Alfredo Odon Rodriguez Ingeniero. « Determination of flow with echo-planar imaging ». Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363605.
Texte intégralShymkiw, Roxane Chia-Chi. « Measurement of blood flow in bone by laser Doppler imaging ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0021/MQ55267.pdf.
Texte intégralHimsworth, John M. « Linear array CMOS detectors for laser Doppler blood flow imaging ». Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/12392/.
Texte intégralHinsdale, Taylor A. « Laser Speckle Imaging : A Quantitative Tool for Flow Analysis ». DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1251.
Texte intégralLim, Brian. « Modeling ultrasound imaging of red blood cell aggregation in shear flow ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0006/NQ41213.pdf.
Texte intégralPierce, Iain Thomas. « MR sequence development for imaging venous blood flow in the leg ». Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/10210.
Texte intégralMilet, Sylvain F. « Visualization and quantification of left heart blood flow by phase encoding magnetic resonance imaging ». Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/16056.
Texte intégralSepehri, Arsalan. « Estimation and reduction of background noise from MRI blood flow images ». Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326246.
Texte intégralValdés, Escobar Claudia Patricia. « New laser speckle methods for in vivo blood flow imaging and monitoring ». Doctoral thesis, Universitat Politècnica de Catalunya, 2014. http://hdl.handle.net/10803/285015.
Texte intégralEl flujo sanguíneo y su regulación, así como la hemodinámica en general, son parámetros importantes para determinar el estado de salud de los tejidos; por esto, su medición tiene numerosas aplicaciones en los ámbitos clínico y de investigación. Varias técnicas ópticas resultan atractivas para la medición del flujo sanguíneo dado su carácter no invasivo o mínimamente invasivo, continuo y relativamente económico. Durante mi trabajo doctoral he contribuido a la monitorización del flujo sanguíneo, en modelos de experimentación animal, con la construcción de un dispositivo multimodo, basado en la flujometría de speckle láser (laser speckle flowmetry, LSF) y las señales ópticas intrínsicas (optical intrinsic signals, OIS), capaz de medir flujo sanguíneo de la microvasculatura superficial en el cerebro, oxigenación sanguínea y volumen sanguíneo en investigación traslacional. Este dispositivo fue aplicado en modelos animales de infarto cerebral; sin embargo, es flexible y puede ser modificado y utilizado para otros propósitos. Así pues, he desarrollado nuevos métodos experimentales y protocolos de procesamiento de imágenes que nos permitieron llevar a cabo estudios longitudinales, donde los animales pueden ser removidos del dispositivo en repetidas ocasiones. Adicionalmente, este dispositivo fue utilizado como herramienta en un estudio multidisciplinario para entender el papel de la proteína lectina de unión a la manosa (MBL) en las lesiones por isquemia-reperfusión después de un infarto cerebral en modelos animales. Este estudio, dio origen a la mayor contribución de este trabajo, siendo esta el desarrollo de la espectroscopía y tomografía óptica de contraste de speckle; una novedosa técnica óptica, no invasiva para medición de flujo sanguíneo profundo que allana el camino para la obtención de imágenes tridimensionales de flujo sanguíneo más profundo. Este nuevo método, se desarrolló primero desde una perspectiva teórica, y posteriormente se validó en phantoms de tejido biológico, demostrando su factibilidad en mediciones realizadas en el músculo del antebrazo de un paciente. En general, estas contribuciones permitirán el desarrollo de métodos tomográficos, no invasivos y rentables para la medición de flujo sanguíneo, extensibles incluso a seres humanos
Biglands, John David. « Quanitifying myocardial blood flow using dynamic contrast enhanced cardiac magnetic resonance imaging ». Thesis, University of Leeds, 2012. http://etheses.whiterose.ac.uk/3756/.
Texte intégralZhou, You. « Fast Algorithm for Simulation of Signals in Medical Ultrasound Blood Flow Imaging ». Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elektronikk og telekommunikasjon, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19522.
Texte intégralGallichan, Daniel. « Measuring cerebral blood flow using arterial spin labelling with magnetic resonance imaging ». Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.442955.
Texte intégralXie, Jingyi. « Quantitative measurement of regional cerebral blood flow with arterial spin labelling imaging ». Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504384.
Texte intégralOkell, Thomas William. « Assessment of collateral blood flow in the brain using magnetic resonance imaging ». Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:7e63bcf2-22bf-49e5-81ec-1644217605ae.
Texte intégralValdés, Escobar Claudia Patricia. « New laser speckle methods for in vivo blood flow imaging and monitoring ». Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4367/document.
Texte intégralBlood flow and its regulation are important for the health of tissues and its measurement has many applications in research and clinical environments. Optical techniques are often attractive for the non- or minimally-invasive, continuous and relatively inexpensive measurement of blood flow. This work contributes to the monitoring of blood flow in translational research with the construction of a multimodal device, based on laser speckle flowmetry and optical intrinsic signals, capable of measuring superficial microvascular cerebral blood flow, blood oxygenation and blood volume. This device was applied in animal models of ischemic stroke and is flexible to be modified and used for other purposes. In doing so, I have developed new experimental methods and image processing protocols that allowed us to perform longitudinal studies where the animal can be removed from the device several times. This device has also been used to elucidate the role of the Mannose-binding lectin protein in reperfusion injury after an ischemic stroke in animal models. This led to the main contribution of this work: the development of the speckle contrast optical spectroscopy and tomography, a new non-invasive, optical technique for deep blood flow measurement that paves the way for deeper and three dimensional imaging of blood flow. This new method was first developed from a theoretical perspective. Then it was validated in tissue simulating phantoms and demonstrated to be feasible in measurements on the human arm muscle. Overall, these contributions will allow the development of cost-effective, non-invasive tomographic methods for the measurement of blood flow even in humans
Irwin, Daniel. « MULTIMODAL NONCONTACT DIFFUSE OPTICAL REFLECTANCE IMAGING OF BLOOD FLOW AND FLUORESCENCE CONTRASTS ». UKnowledge, 2018. https://uknowledge.uky.edu/cbme_etds/50.
Texte intégralSummers, Paul Eugene. « Quantitative flow by magnetic resonance phase mapping ». Thesis, King's College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267482.
Texte intégralCheung, Ka-hei, et 張嘉熹. « Adaptive clutter filter design for micro-ultrasound color flow imagingof small blood vessels ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B45517873.
Texte intégralKolthammer, Jeffrey A. « Quantitative Positron Emission Tomography for Estimation of Absolute Myocardial Blood Flow ». Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1365007300.
Texte intégralHenderson, Elizabeth. « Measurement of blood flow, blood volume and capillary permeability in breast tumours using contrast-enhanced magnetic resonance imaging ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0020/NQ58134.pdf.
Texte intégralCorreia, Mafalda Filipa Rodrigues. « From 2D to 3D cardiovascular ultrafast ultrasound imaging : new insights in shear wave elastography and blood flow imaging ». Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCC158.
Texte intégralThis thesis was focused on the development of novel cardiovascular imaging applications based on 2-D and 3-D ultrafast ultrasound imaging. More specifically, new technical and clinical developments of myocardial shear wave elastography and ultrafast blood flow imaging are presented in this manuscript.At first, myocardial shear wave elastography was developed for transthoracic imaging and improved by a non-linear imaging approach to non-invasively and locally assess shear wave velocity measurements, and consequently tissue stiffness in the context of cardiac imaging. This novel imaging approach (Ultrafast Harmonic Coherent Compounding) was tested and validated in-vitro and the in vivo feasibility was performed in humans for biomechanical evaluation of the cardiac muscle wall, the myocardium. Then, we have translated shear wave elastography to the clinical practice within two clinical trials, each one with a different population (adults and children). In both clinical trials, we have studied the capability of shear wave elastography to assess quantitatively myocardial stiffness in healthy volunteers and in patients suffering from hypertrophic cardiomyopathy. The results in the adult population indicated that shear wave elastography may become an effective imaging tool to assess cardiac muscle stiffness in clinical practice and help the characterization of hypertrophic cardiomyopathy. Likewise, we have also translated Shear Wave Elastography into four-dimensions and we have developed a new approach to map tissue elastic anisotropy in 3-D. 3-D Elastic Tensor Imaging allowed us to estimate quantitatively in a single acquisition the elastic properties of fibrous tissues. This technique was tested and validated in vitro in transverse isotropic models. The in-vivo feasibility of 3D elastic tensor imaging was also assessed in a human skeletal muscle.In parallel, we have developed a novel imaging technique for the non-invasive and non-radiative imaging of coronary circulation using ultrafast Doppler. This approach allowed us to image blood flow of the coronary circulation with high sensitivity. A new adaptive filter based on the singular value decomposition was used to remove the clutter signal of moving tissues. Open-chest swine experiments allowed to evaluate and validate this technique and results have shown that intramural coronary circulation, with diameters up to 100 µm, could be assessed. The in-vivo transthoracic feasibility was also demonstrated in humans in pediatric cardiology.Finally, we have developed a novel imaging modality to map quantitatively the blood flow in 3-D: 3-D ultrafast ultrasound flow imaging. We demonstrated that 3-D ultrafast ultrasound flow imaging can assess non-invasively, user-independently and directly volumetric flow rates in large arteries within a single heartbeat. We have evaluated and validated our technique in vitro in arterial phantoms using a 2-D matrix-array probe and a customized, programmable research 3-D ultrafast ultrasound system, and the in-vivo feasibility was demonstrated in human carotid arteries
Kardan, Ahmad A. « An ultrasonic system for intravascular measurement and visualisation of anatomical structures and blood flow ». Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/46857.
Texte intégralKoirala, Nischal. « Access Blood Flow Measurement Using Angiography ». Cleveland State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=csu153796812445051.
Texte intégralNorden, Andrew D. « Use of SPECT Difference Imaging to Assess Subcortical Blood Flow Changes During Epileptic Seizures ». Yale University, 2003. http://ymtdl.med.yale.edu/theses/available/etd-02112003-133913/.
Texte intégralOllenberger, Glenn P. « Imaging of cardiac output and regional cerebral blood flow during the mammalian dive response ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ37904.pdf.
Texte intégralWallin, Ashley Kay. « Renal Arterial Blood Flow Quantification by Breath-held Phase-velocity Encoded MRI ». Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4982.
Texte intégralEriksson, Jonatan, Ann F. Bolger, Tino Ebbers et Carl-Johan Carlhäll. « Four-dimensional blood flow-specific markers of LV dysfunction in dilated cardiomyopathy ». Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-87616.
Texte intégralGuenet, Frederique S. A. « Quantification of valvular regurgitation by proximal isovelocity surface area and magnetic resonance imaging ». Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/11207.
Texte intégralKumar, Hemant. « Software analytical tool for assessing cardiac blood flow parameters / ». View thesis, 2001. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030724.122149/index.html.
Texte intégralBaeza, Ortega José Antonio. « Combined Visualization of Intracardiac Blood Flow and Wall Motion Assessed by MRI ». Thesis, Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-75881.
Texte intégralShi, Yulu. « Cerebral blood flow and intracranial pulsatility in cerebral small vessel disease ». Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/29625.
Texte intégralProwle, John Richard. « Renal blood flow and the pathophysiology of acute kidney injury ». Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607649.
Texte intégralWilson, Daniel Jonathan. « The measurement of abnormal and normal blood flow to the liver using magnetic resonance imaging ». Thesis, University of Leeds, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505062.
Texte intégralEssex, Timothy John Hudson. « The development and evaluation of a scanning laser Doppler instrument for imaging skin blood flow ». Thesis, Northumbria University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357147.
Texte intégralSantelli, Claudio. « Accelerating multi-dimensional magnetic resonance imaging of blood flow and turbulence in the cardiovascular system ». Thesis, King's College London (University of London), 2015. http://kclpure.kcl.ac.uk/portal/en/theses/accelerating-multidimensional-magnetic-resonance-imaging-of-blood-flow-and-turbulence-in-the-cardiovascular-system(8a415f79-2e07-48fd-ba14-13eab607da22).html.
Texte intégralEkroll, Ingvild Kinn. « Ultrasound imaging of blood flow based on high frame rate acquisition and adaptive signal processing ». Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for sirkulasjon og bildediagnostikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-20512.
Texte intégralLi, Longchuan. « Numerical and experimental study of three imaging advancements in phase contrast magnetic resonance imaging ». Birmingham, Ala. : University of Alabama at Birmingham, 2007. http://www.mhsl.uab.edu/dt/2007p/li.pdf.
Texte intégralJackson, Joel R. « Ultrasonic imaging of the structure and elasticity of the carotid bifurcation ». Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/15718.
Texte intégralBarmby, David Stuart. « Non-invasive quantification of myocardial blood flow by cardiac magnetic resonance imaging : validation of quantified myocardial perfusion imaging with intracoronary pressure/flow measurement in coronary heart disease ». Thesis, University of Leeds, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426772.
Texte intégralGolster, Helena. « Regulation of microvascular blood flow : a clinical and experimental study based on laser Doppler perfusion imaging / ». Linköping : Univ, 2001. http://www.bibl.liu.se/liupubl/disp/disp2001/med683s.pdf.
Texte intégralGariba, Munir Antonio. « Visualisation methods for the analysis of blood flow using magnetic resonance imaging and computational fluid dynamics ». Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322530.
Texte intégralSaber, Nikoo Rezazadeh. « CFD modelling of blood flow in the human left ventricle based on magnetic resonance imaging data ». Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390806.
Texte intégralEghbali, Ladan. « The impact of defective ultrasound transducers on the evaluation results of ultrasound imaging of blood flow ». Thesis, KTH, Skolan för teknik och hälsa (STH), 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-154830.
Texte intégralEriksson, Jonatan. « Quantification of 4D Left Ventricular Blood Flow in Health and Disease ». Doctoral thesis, Linköpings universitet, Avdelningen för kardiovaskulär medicin, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-98786.
Texte intégralYoung, Anthony M. « Investigation of Laser Speckle Contrast Imaging's Sensitivity to Flow ». Miami University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=miami153256524246362.
Texte intégralKumar, Hemant. « Software analytical tool for assessing cardiac blood flow parameters ». Thesis, View thesis, 2001. http://handle.uws.edu.au:8081/1959.7/392.
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