Дисертації з теми "Quantitative magnetic resonance angiography"
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Sobieh, Ahmed Mohammed Abdelaal Mohammed [Verfasser], and Uwe [Akademischer Betreuer] Klose. "Quantitative magnetic resonance angiography for flow quantification of carotid and intracranial stenosis / Ahmed Mohammed Abdelaal Mohammed Sobieh ; Betreuer: Uwe Klose." Tübingen : Universitätsbibliothek Tübingen, 2016. http://d-nb.info/1199615536/34.
Повний текст джерелаSobieh, Ahmed [Verfasser], and Uwe [Akademischer Betreuer] Klose. "Quantitative magnetic resonance angiography for flow quantification of carotid and intracranial stenosis / Ahmed Mohammed Abdelaal Mohammed Sobieh ; Betreuer: Uwe Klose." Tübingen : Universitätsbibliothek Tübingen, 2016. http://d-nb.info/1199615536/34.
Повний текст джерелаBergman, Harris L. "Knowledge-based magnetic resonance angiography." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/18247.
Повний текст джерелаSaranathan, Manojkumar. "Advances in magnetic resonance coronary angiography /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/8000.
Повний текст джерелаVafadar, Bahareh. "Fast methods for Magnetic Resonance Angiography (MRA)." Thesis, University of Canterbury. Electrical and Computer Engineering, 2014. http://hdl.handle.net/10092/9332.
Повний текст джерелаTroalen, Thomas. "IRM quantitative de la perfusion myocardique par marquage de spins artériels = Quantitative myocardial perfusion MRI using arterial spin labeling." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM5006/document.
Повний текст джерелаMyocardial blood flow is an important factor of tissue viability and function. Diffuse changes in microcirculation preceding heart failure are involved in various cardiac pathologies. This work aim at improving existing techniques allowing quantitative and non-invasive myocardial perfusion assessment using arterial spin labeling. The first step of my work was to design an alternative approach to quantify myocardial blood flow in mice. The so called steady-pulsed ASL (spASL) is based on a regularly repeated pulsed labeling in order to build up a stationary regime of the magnetization under the influence of perfusion. The associated theoretical model has been developed in parallel to quantify tissue blood flow. We have shown that spASL allows to obtain similar results than the previously employed techniques, with the additional advantages of an increased sensitivity to the perfusion signal and a reduced acquisition time. A transfer towards clinical imaging for human applications was then undertaken. The spASL labeling scheme has been preserved while adapting the readout module to the specificities of cardiac MRI when applied to free-breathing human acquisitions. A dedicated post-processing, which includes a retrospective motion correction, has emerged subsequently to improve the robustness of our measurements. In parallel to the developments made for human studies, some optimization of the spASL technique when applied to rodent have been carried out depending on the conducted studies
Grisham, Joe P. 1950. "Phase enhanced time-of-flight magnetic resonance angiography." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/46454.
Повний текст джерелаWong, Pauline. "Interactive magnetic resonance angiography using fresh blood imaging." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611244.
Повний текст джерелаHansen, Tomas. "Assessment of Atherosclerosis by Whole-Body Magnetic Resonance Angiography." Doctoral thesis, Uppsala : Department of Oncology, Radiology and Clinical Immunology Institutionen för onkologi, radiologi och klinisk immunologi, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7778.
Повний текст джерелаHo, K. Y. J. A. M. "MR angiography of the lower extremities." [Maastricht : Maastricht : Universiteit Maastricht] ; University Library, Maastricht University [Host], 1999. http://arno.unimaas.nl/show.cgi?fid=6889.
Повний текст джерелаWikström, Johan. "On contrast-enhanced magnetic resonance angiography of the aortoiliac arteries." Doctoral thesis, Uppsala University, Department of Oncology, Radiology and Clinical Immunology, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-715.
Повний текст джерелаIn contrast-enhanced magnetic resonance angiography (CE-MRA),vascular signal is produced by the acquisition of a T1-weighted magnetic resonance imaging scan while the presence of a contrast agent induces a low T1 in blood. In this thesis,CE-MRA of the aortoiliac arteries was evaluated.Different contrast agents and techniques for synchronisation of the scan with the contrast bolus passage were assessed.
In 30 patients with clinically suspected iliac artery stenoses,contrast-enhanced magnetic resonance angiography was compared with duplex ultrasound scanning and digital subtraction x-ray angiography (DSA),with intraarterial pressure measurements as reference method. No statistically significant differences in sensitivity or specificity were observed between the techniques regarding the detection of hemodynamically significant iliac stenoses. The use of multiplanar reformats and source images in the MRA examinations was of value for the differentiation between high-grade stenoses and occlusions. With DSA as reference method, MRA had significantly higher sensitivity and specificity than duplex for the detection of ≥50% stenoses.
In fourteen patients examined with iliac artery MRA, differences in contrast arrival time of up to 7 s was observed between the aorta and the common femoral artery.A dual-station timing technique adjusting for this difference was found feasible. Compared with a fluoroscopically triggered technique (n=13),which is used in clinical rotine, the dual-station technique was more reliable for the visualisation of distal vessels.
In a clinical phase II study comparing different doses of t he contrast agent gadobenate dimeglumine for the enhancement of iliac artery MRA, a significant improvement in subjective diagnostic quality compared with time-of-flight MRA was found at all doses from 0.025 mmol/kg.An increasing trend with dose was observed up to a dose level of 0.05-0.1 mmol/kg.
In a phase I clinical study on the intravascular, iron oxide contrast agent NC100150 Injection, a positive dose response was observed for abdominal vascular enhancement, with the highest contrast-to-noise ratio observed at 4.0 mg Fe/kg bw at 1.5 T and at 2.5-4 mg Fe/kg bw at 0.5 T.At 1.5 T higher R2*values were calculated for the aorta than for the IVC.
Tizon, Xavier. "Algorithms for the analysis of 3D magnetic resonance angiography images." Phd thesis, Uppsala : Centre for Image Analysis, Swedish Univ. of Agricultural Sciences, 2004. http://epsilon.slu.se/s316.pdf.
Повний текст джерелаBerry, Eleanor. "Optimisation of vessel-selective magnetic resonance perfusion imaging and angiography." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:6cb21445-cb10-4349-87e3-3cd93e8dcdb0.
Повний текст джерелаHill, Richard J. "Developments in quantitative magnetic resonance imaging." Thesis, University of Surrey, 1999. http://epubs.surrey.ac.uk/843527/.
Повний текст джерелаPike, G. Bruce (Gilbert Bruce). "Signal behaviour in magnetic resonance angiography using rapid field echo sequences." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74564.
Повний текст джерелаThese signal models are used to optimize time-of-flight field echo angiographic sequence parameters for studies of the extra and intra-cranial arteries by assuming mean blood velocities and transit times respectively. The contrast-to-noise ratio per unit time is the function maximized in this analysis and both 2-D multi-slice and 3-D volume acquisitions are considered.
Yamamoto, Takayuki. "Magnetic resonance angiography with compressed sensing: an evaluation of moyamoya disease." Kyoto University, 2018. http://hdl.handle.net/2433/232119.
Повний текст джерелаAl-Kwifi, Osama. "Development of 3D magnetic resonance angiography for the detection of vascular pathology." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ60407.pdf.
Повний текст джерелаPlanken, Robrecht Nils. "Hemodialysis vascular access imaging duplex ultrasound and contrast-enhanced magnetic resonance angiography /." [Maastricht] : Maastricht : Datawyse/Universitaire Pers Maastricht ; University Library, Maastricht University [Host], 2007. http://arno.unimaas.nl/show.cgi?fid=8715.
Повний текст джерелаMcRobbie, Donald William. "Quantitative assessment of magnetic resonance imaging systems." Thesis, Imperial College London, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312949.
Повний текст джерелаBarnes, D. "Quantitative magnetic resonance imaging of the brain." Thesis, University of Liverpool, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234819.
Повний текст джерелаSummers, 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.
Повний текст джерелаHickman, Simon James. "Quantitative magnetic resonance imaging in optic neuritis." Thesis, University College London (University of London), 2004. http://discovery.ucl.ac.uk/1446600/.
Повний текст джерелаLin, Weili. "High resolution three-dimensional time-of-flight magnetic resonance angiography and flow quantification." Case Western Reserve University School of Graduate Studies / OhioLINK, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=case1057241590.
Повний текст джерелаMA, DAN. "Magnetic Resonance Fingerprinting." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1426170542.
Повний текст джерелаCounsell, Serena Jane. "Quantitative magnetic resonance imaging of the preterm brain." Thesis, Imperial College London, 2005. http://hdl.handle.net/10044/1/11362.
Повний текст джерелаWalker, Conrad Leigh. "Quantitative magnetic resonance imaging of ultrasound acoustic fields." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq29273.pdf.
Повний текст джерелаCowie, Christopher James Andrew. "Quantitative magnetic resonance imaging in traumatic brain injury." Thesis, University of Newcastle Upon Tyne, 2012. http://hdl.handle.net/10443/1730.
Повний текст джерелаTaylor, Nicola Jane. "Applications of projections to quantitative magnetic resonance imaging." Thesis, Institute of Cancer Research (University Of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300557.
Повний текст джерелаSchuster, Andreas. "Validation of quantitative myocardial perfusion magnetic resonance imaging." Thesis, King's College London (University of London), 2012. https://kclpure.kcl.ac.uk/portal/en/theses/validation-of-quantitative-myocardial-perfusion-magnetic-resonance-imaging(b7271d7c-addb-4bb6-b9d9-b9b5312b5d12).html.
Повний текст джерелаSiegel, John Mather Jr. "Magnetic resonance imaging of flow through a stenosis : accuracy of angiography and phase velocity measurements." Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/17626.
Повний текст джерелаDahlqvist, Leinhard Olof. "Quantitative Magnetic Resonance in Diffuse Neurological and Liver Disease." Doctoral thesis, Linköping : Department of Medical and Health Sciences, Linköping University, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-54728.
Повний текст джерелаTardif, Christine. "Quantitative magnetic resonance imaging of cortical multiple sclerosis pathology." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=96663.
Повний текст джерелаAu cours des dix dernières années, l'immunohistologie et l'imagerie par résonance magnétique (IRM) ont corroboré l'étendue de la pathologie de la sclérose en plaques (SEP) dans la substance grise, révolutionnant ainsi la perception de la SEP comme maladie de la substance blanche. Les lésions corticales demeurent toutefois très difficiles à discerner in vivo au moyen de l'IRM. L'objectif central de cette thèse de doctorat était de créer un cadre d'acquisition et d'analyse quantitatives d'IRM pour étudier la pathologie corticale de la SEP in vivo. À cette fin, deux approches complémentaires ont été utilisées : la neuro-morphométrie et l'imagerie quantitative des propriétés de résonance magnétique des tissus cérébraux. En premier lieu, nous avons développé un protocol d'acquisition d'image optimisé pour la morphométrie voxel à voxel (VBM) de la substance grise afin de quantifier l'atrophie locale de la substance grise causée par la SEP. La sensibilité des résultats de VBM à la force du champ magnétique ainsi qu'à la séquence d'acquisition a été caractérisée par une étude VBM sur des sujets sains utilisant les deux séquences en pondération T1 les plus répandues, FLASH et MP-RAGE, à 1,5 et 3 Tesla. Une implémentation innovatrice de la séquence MDEFT pour le VBM à 3 Tesla a ensuite été comparée à FLASH et à MP-RAGE. MDEFT a démontré le rapport contraste sur bruit le plus élevé entre la substance blanche et la substance grise, et a exigé le plus petit nombre de sujets pour détecter une différence significative dans la densité de la substance grise. En second lieu, nous avons créé un modèle quantitatif de résonance magnétique des lésions corticales, un outil indispendable à la conception de nouvelles méthodes d'acquisition d'IRM pour la détection de plaques corticales in vivo, et pour l'interprétation des observations d'IRM in vivo. Nous avons réalisé une étude d'IRM quantitative à haute résolution d'un hémisphère post mortem atteint de SEP, qui a ensuite été validée par l'immunohistologie. Les lésions corticales démyélinisées sont caractérisées par un prolongement des temps de relaxation T1 et T2, une augmentation de la densité de protons et une diminution du ratio de transfert de magnétisation. Finalement, les deux approches ont été jumelées pour développer une méthode de segmentation des lésions corticales sur IRM basée sur l'analyse de la forme des profils laminaires du cortex. La méthode a été appliquée et validée sur l'ensemble des données d'IRM et d'immunohistologie de l'hémisphère post mortem. L'ensemble de ces méthodes quantitatives d'IRM a le potentiel d'améliorer notre compréhension de l'évolution de la pathologie affectant la substance grise en SEP, ainsi que d'améliorer la corrélation avec les déficiences cliniques et cognitives.
Bray, Timothy J. P. "Magnetic resonance imaging of skeletal inflammation : a quantitative approach." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10054820/.
Повний текст джерелаMehndiratta, Amit. "Quantitative measurements of cerebral hemodynamics using magnetic resonance imaging." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:b9dfb1a4-f297-47b9-a95f-b60750065008.
Повний текст джерелаHuo, Donglai. "Quantitative Image Quality Evaluation of Fast Magnetic Resonance Imaging." Case Western Reserve University School of Graduate Studies / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=case1155913518.
Повний текст джерелаArmitage, Paul Anthony. "Quantitative magnetic resonance diffusion imaging of the human brain." Thesis, University of Edinburgh, 2000. http://hdl.handle.net/1842/22344.
Повний текст джерелаSindi, Rooa. "Quantitative Measurements of Breast Density Using Magnetic Resonance Imaging." Thesis, Curtin University, 2021. http://hdl.handle.net/20.500.11937/86105.
Повний текст джерелаPeterson, Erika. "Synthetic MRI for visualization of quantitative MRI." Thesis, Linköpings universitet, Avdelningen för radiologiska vetenskaper, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-102651.
Повний текст джерелаMalamateniou, Christina. "Optimisatin and clinical applications of neonatal magnetic resonance angiography of cerebral vessels at 3 tesla." Thesis, Imperial College London, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.499051.
Повний текст джерелаHutter, Jana [Verfasser], and Joachim [Akademischer Betreuer] Hornegger. "Accelerated Non-contrast-enhanced Morphological and Functional Magnetic Resonance Angiography / Jana Hutter. Gutachter: Joachim Hornegger." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2014. http://d-nb.info/1075743702/34.
Повний текст джерелаAvadhut, Yamini. "Quantitative solid state nuclear magnetic resonance methods for inorganic materials." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-153598.
Повний текст джерелаMoore, Elizabeth Anne. "Quantitative magnetic resonance imaging in arthritis and diabetic microvascular disease." Thesis, University of Exeter, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278798.
Повний текст джерелаChen, Chen. "Quantitative magnetic resonance imaging studies of extended drug release systems." Thesis, University of Cambridge, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708155.
Повний текст джерелаYuan, Jianmin. "Three-dimensional quantitative magnetic resonance imaging of carotid atherosclerotic plaque." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/267723.
Повний текст джерелаHamy, V. "Improving accuracy of information extraction from quantitative magnetic resonance imaging." Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1433683/.
Повний текст джерелаWang, Maisie S. "Ultra-high resolution imaging and artery-vein separation of blood pool contrast-enhanced MRA /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/8094.
Повний текст джерелаCrook, Nigel Paul. "The application of quantitative environmental magnetic measurements to sedimentary systems." Thesis, Manchester Metropolitan University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248812.
Повний текст джерелаKara, Danielle Christine. "Understanding Error in Magnetic Resonance Fingerprinting." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1521406087127691.
Повний текст джерелаBiffar, Andreas. "Quantitative Analysis of Diffusion-weighted Magnetic Resonance Imaging in the Spine." Diss., lmu, 2010. http://nbn-resolving.de/urn:nbn:de:bvb:19-126230.
Повний текст джерелаHiggins, David Michael. "T1 measurement for quantitative myocardial perfusion assessment with magnetic resonance imaging." Thesis, University of Leeds, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.421378.
Повний текст джерела