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Relevant bibliographies by topics / Magnetic resonance imaging: methods / Dissertations / Theses

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Dissertations / Theses on the topic 'Magnetic resonance imaging: methods'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Blomqvist, Lennart. "Magnetic resonance imaging of rectal tumours /." Stockholm, 1997. http://diss.kib.ki.se/1997/91-628-2797-9.

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2

Clare, Stuart John. "Functional magnetic resonance imaging : methods and applications." Thesis, University of Nottingham, 1997. http://eprints.nottingham.ac.uk/13223/.

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The technique of functional magnetic resonance imaging is rapidly moving from one of technical interest to wide clinical application. However, there are a number of questions regarding the method that need resolution. Some of these are investigated in this thesis. High resolutionf MRI is demonstrated at 3.0 T, using an interleaved echo planar imaging technique to keep image distortion low. The optimum echo time to use in fMRI experiments is investigated using a multiple gradient echo sequence to obtain six images, each with a different echo time, from a single free induction decay. The same da

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3

Chatnuntawech, Itthi. "Acquisition and reconstruction methods for magnetic resonance imaging." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/105570.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2016.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 119-138).<br>Magnetic Resonance Imaging (MRI) is a non-invasive medical imaging modality that has a wide range of applications in both diagnostic clinical imaging and medical research. MRI has progressively gained in importan

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4

Scheidegger, Rachel Nora. "Methods for chemical exchange saturation transfer magnetic resonance imaging." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/79251.

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Thesis (Ph. D. in Biomedical Engineering)--Harvard-MIT Program in Health Sciences and Technology, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 108-126).<br>Chemical exchange saturation transfer (CEST) is a relatively new magnetic resonance imaging (MRI) acquisition technique that generates contrast dependent on tissue microenvironment, such as protein concentration and intracellular pH. CEST imaging has the potential to become an important biomarker in a wide range of disorders. As an indicator of tissue pH, CEST imaging may allow the identification

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5

Berman, Benjamin Paul. "Accelerated Radial Magnetic Resonance Imaging: New Applications and Methods." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/594390.

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Magnetic resonance imaging is a widely used medical imaging technique, and accelerated data acquisition is critical for clinical utility. In this thesis, new techniques that incorporate radial acquisition, compressed sensing and sparse regularization for improved rapid imaging are presented. Sufficiently accelerated imaging methods can lead to new applications. Here we demonstrate a solution to lung imaging during forced expiration using accelerated MRI. A technique for dynamic 3D imaging of the lungs from highly undersampled data is developed and tested on six subjects. This method takes adva

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6

Hamilton, Lei Hou. "Reduced-data magnetic resonance imaging reconstruction methods: constraints and solutions." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42707.

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Imaging speed is very important in magnetic resonance imaging (MRI), especially in dynamic cardiac applications, which involve respiratory motion and heart motion. With the introduction of reduced-data MR imaging methods, increasing acquisition speed has become possible without requiring a higher gradient system. But these reduced-data imaging methods carry a price for higher imaging speed. This may be a signal-to-noise ratio (SNR) penalty, reduced resolution, or a combination of both. Many methods sacrifice edge information in favor of SNR gain, which is not preferable for applications which

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7

Roura, Pérez Eloy. "Automated methods on magnetic resonance brain imaging in multiple sclerosis." Doctoral thesis, Universitat de Girona, 2016. http://hdl.handle.net/10803/394030.

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In this thesis, we have focused on the image pre-processing in order to enhance the image information. The main aspects of this enhancement rely on removing any image noise and correcting any intensity bias induced by the scanner. Besides, we also contributed with a new technique based on a multispectral, adaptive, region growing algorithm in order to segment the brain from the rest of the head. We include, as a pre-processing step, the image registration process, in which we proposed a novel pipeline by using information from multiple modalities to improve the results of this process. Furth

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8

Aitken, Andrew Peter. "Advances in magnetic resonance imaging reconstruction methods incorporating prior knowledge." Thesis, King's College London (University of London), 2015. https://kclpure.kcl.ac.uk/portal/en/theses/advances-in-magnetic-resonance-imaging-reconstruction-methods-incorporating-prior-knowledge(3a2c5c17-f04e-47e5-a054-d3305aba3e37).html.

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In magnetic resonance (MR) imaging it is usually assumed that the acquired data represent samples of the Fourier transform of the object. However, there are many cases where this assumption is violated due to system imperfections, subject motion and deliberate undersampling in an effort to reduce scan times. This can lead to artefacts in the reconstructed images. In this thesis two emerging clinical applications of MRI are considered: hybrid PET-MR imaging and coronary MR angiography (CMRA). Factors giving rise to substantial deviations from the basic Fourier model in these cases are described

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9

Oliver-Taylor, A. "Parallel transit methods for arterial spin labelling magnetic resonance imaging." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1382488/.

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Vessel selective arterial spin labelling (ASL) is a magnetic resonance imaging technique which permits the visualisation and assessment of the perfusion territory of a specific set of feeding arteries. It is of clinical importance in both acute and chronic cerebrovascular disease, and the mapping of blood supplied to tumours. Continuous ASL is capable of providing the highest signal-to-noise (SNR) ratio of the various ASL methods. However on clinical systems it suffers from high hardware demands, and the control of systematic errors decreases perfusion sensitivity. A separate labelling coil av

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10

Brand, Robert Casper. "Chemical exchange saturation transfer methods for clinical magnetic resonance imaging." Thesis, University of Oxford, 2018. http://ora.ox.ac.uk/objects/uuid:27cbd73d-2a19-4964-be46-c3d71fa214db.

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Chemical exchange saturation transfer (CEST) imaging is a novel contrast mechanism in magnetic resonance imaging. CEST allows for the indirect detection of chemical groups that contain exchangeable protons. The contrast from endogenous CEST agents in the human brain is sensitive to changes in pH and protein structures. Therefore, CEST imaging offers a potential tool for the non-invasive detection of pathologies such as stroke and cancer. However, clinical implementation of current CEST MRI sequences is hindered by a lack of contrast-to-noise ratio (CNR) per unit time. Furthermore, confounding

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11

Payne, Nicholas Roy. "Quadrupolar relaxation-based methods in fast field-cycling MRI." Thesis, University of Aberdeen, 2019. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=240235.

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Quadrupolar relaxation-based methods in Fast Field-Cycling MRI Nicholas R. Payne Aberdeen Biomedical Imaging Centre, University of Aberdeen, AB25 2ZD, Scotland, UK Fast Field-Cycling MRI (FFC-MRI) can access contrast based on the dependence of a sample's relaxation rate to the applied magnetic field strength. This technique can provide signal based on interactions with local quadrupolar nuclei through cross-relaxation, however, there are other so-called Nuclear Quadrupole Double Resonance (NQDR) techniques described in the literature. This work has been centred on efforts to apply these techni

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12

Streitbürger, Daniel-Paolo. "Investigating Brain Structure Using Voxel-Based Methods with Magnetic Resonance Imaging." Doctoral thesis, Universitätsbibliothek Leipzig, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-132638.

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The number of people suffering from neurodegenerative diseases, such as Alzheimer`s disease, increased dramatically over the past centuries and is expected to increase even further within the next years. Based on predictions of the World Health Organization and Alzheimer`s Disease International, 115 million people will suffer from dementia by the year 2050. An additionally increase in other age related neurodegenerative diseases is also forecasted. Quite naturally, neurodegenerative diseases became a focus of attention of governments and health insurances, trying to control the uprising financ

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13

Evans, Christopher John. "Optimisation of passive shimming techniques for magnetic-resonance imaging." Thesis, University of Exeter, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297612.

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14

Wigström, Lars. "Multidimensional magnetic resonance imaging : new methods for analysis of cardiovascular dynamics /." Linköping : Univ, 2003. http://www.bibl.liu.se/liupubl/disp/disp2003/tek807s.pdf.

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15

Bright, Molly Gallogly. "Novel methods for characterisation of cerebrovascular reactivity using magnetic resonance imaging." Thesis, University of Oxford, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.540125.

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16

Jung, Adam Juyoung. "Multiparametric magnetic resonance imaging methods for detection of prostate cancer a dissertation /." San Antonio : UTHSC, 2009. http://learningobjects.library.uthscsa.edu/cdm4/item_viewer.php?CISOROOT=/theses&CISOPTR=55&CISOBOX=1&REC=6.

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17

ARDUINO, ALESSANDRO. "Mathematical methods for magnetic resonance based electric properties tomography." Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2698325.

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Magnetic resonance-based electric properties tomography (MREPT) is a recent quantitative imaging technique that could provide useful additional information to the results of magnetic resonance imaging (MRI) examinations. Precisely, MREPT is a collective name that gathers all the techniques that elaborate the radiofrequency (RF) magnetic field B1 generated and measured by a MRI scanner in order to map the electric properties inside a human body. The range of uses of MREPT in clinical oncology, patient-specific treatment planning and MRI safety motivates the increasing scientific interest in its

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18

Grieve, Stuart Michael. "Development of fast magnetic resonance imaging methods for investigation of the brain." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365824.

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19

Hughes, Paul. "Image processing methods for multi-nuclear magnetic resonance imaging of the lungs." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/20132/.

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20

Yamashita, Ayumu. "Functional magnetic resonance imaging-based methods for translational research of psychiatric disorders." Kyoto University, 2019. http://hdl.handle.net/2433/242444.

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21

Stabler, Cheryl Lynn. "Development of Noninvasive Methods for Monitoring Tissue Engineered Constructs using Nuclear Magnetic Resonance." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5239.

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Implanted tissue engineered substitutes constitute dynamic systems, with remodeling mediated by both the implanted cells and the host. Thus, there exists a significant need for methods to monitor the function and morphology of tissue engineered constructs. Noninvasive monitoring using 1H Nuclear Magnetic Resonance (NMR) spectroscopy and imaging can prove to be the solution to this problem. Spectroscopy allows for assessment of cellular function through the monitoring of inherent metabolic markers, such as total-choline, while high resolution imaging enables the evaluation of construct morph

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22

Curry, Cecilia W. "New methods for the computation of optical flow." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/20164.

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23

Woo, Bo-kei, and 胡寶琦. "A new hierarchical Bayesian approach to low-field magnetic resonance imaging." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31226917.

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24

Buchanan, Colin Richard. "Structural brain networks from diffusion MRI : methods and application." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/14183.

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Structural brain networks can be constructed at a macroscopic scale using diffusion magnetic resonance imaging (dMRI) and whole-brain tractography. Under this approach, grey matter regions, such as Brodmann areas, form the nodes of a network and tractography is used to construct a set of white matter fibre tracts which form the connections. Graph-theoretic measures may then be used to characterise patterns of connectivity. In this study, we measured the test-retest properties of such networks by varying several factors affecting network construction using ten healthy volunteers who underwent a

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25

Braig, Moritz [Verfasser], and Jürgen [Akademischer Betreuer] Hennig. "Improved methods for preclinical 4D flow magnetic resonance imaging of the aortic arch." Freiburg : Universität, 2020. http://d-nb.info/1218969342/34.

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26

Tijssen, Hendrikus N. "Novel methods for brainstem FMRI." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:ed8e4c4f-5152-44e4-936f-ccf6092d904b.

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The brainstem plays a crucial role in a great number of vital functions such as respiratory regulation, visual reflexes, and the perception of pain. The small size and close proximity of the nuclei requires high-resolution functional magnetic resonance imaging (FMRI). However, brainstem FMRI using conventional gradient-echo echo-planar imaging (GRE-EPI) techniques is challenging due to the increased signal dropout and geometric distortions in the brainstem. The primary aim of the work presented in this thesis was to investigate alternative methods for brainstem FMRI in order to overcome some o

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27

Ash, Thomas William John. "Use of statistical classifiers in the analysis of fMRI data." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609710.

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28

Myllylä, T. (Teemu). "Multimodal biomedical measurement methods to study brain functions simultaneously with functional magnetic resonance imaging." Doctoral thesis, Oulun yliopisto, 2014. http://urn.fi/urn:isbn:9789526205076.

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Abstract Multimodal measurements are increasingly being employed in the study of human physiology. Brain studies in particular can draw advantage of simultaneous measurements using different modalities to analyse correlations, mechanisms and relationships of physiological signals and their dynamics in relation to brain functions. Moreover, multimodal measurements help to identify components of physiological dynamics generated specifically by the brain. This thesis summarizes the study, design and development of non-invasive medical instruments that can be utilized in conjunction with magnetic

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29

Ebbers, Tino. "Cardiovascular fluid dynamics : methods for flow and pressure field analysis from magnetic resonance imaging /." Linköping : Univ, 2001. http://www.bibl.liu.se/liupubl/disp/disp2001/tek690s.pdf.

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30

Hermann, Ingo [Verfasser], and Lothar [Akademischer Betreuer] Schad. "Development of novel methods in quantitative magnetic resonance imaging / Ingo Hermann ; Betreuer: Lothar Schad." Heidelberg : Universitätsbibliothek Heidelberg, 2021. http://d-nb.info/1233788108/34.

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31

Tremoulheac, Benjamin R. "Low-rank and sparse reconstruction in dynamic magnetic resonance imaging via proximal splitting methods." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1458052/.

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Dynamic magnetic resonance imaging (MRI) consists of collecting multiple MR images in time, resulting in a spatio-temporal signal. However, MRI intrinsically suffers from long acquisition times due to various constraints. This limits the full potential of dynamic MR imaging, such as obtaining high spatial and temporal resolutions which are crucial to observe dynamic phenomena. This dissertation addresses the problem of the reconstruction of dynamic MR images from a limited amount of samples arising from a nuclear magnetic resonance experiment. The term limited can be explained by the approach

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32

Clayden, Jonathan D. "Comparative analysis of connection and disconnection in the human brain using diffusion MRI : new methods and applications." Thesis, University of Edinburgh, 2008. http://hdl.handle.net/1842/2383.

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Diffusion magnetic resonance imaging (dmri) is a technique that can be used to examine the diffusion characteristics of water in the living brain. A recently developed application of this technique is tractography, in which information from brain images obtained using dmri is used to reconstruct the pathways which connect regions of the brain together. Proxy measures for the integrity, or coherence, of these pathways have also been defined using dmri-derived information. The disconnection hypothesis suggests that specific neurological impairments can arise from damage to these pathways as a co

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33

Puddephat, Michael J. "Computer interface for convenient application for stereological methods for unbiased estimation of volume and surface area : studies using MRI with particular reference to the human brain." Thesis, University of Liverpool, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368022.

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34

Kurzhunov, Dmitry [Verfasser], and Michael [Akademischer Betreuer] Bock. "Novel reconstruction and quantification methods for Oxygen-17 magnetic resonance imaging at clinical field strengths." Freiburg : Universität, 2017. http://d-nb.info/1141053497/34.

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35

Meiler, Michael Rudolf. "In Vivo Characterization of RIF-1 Tumors via Diffusion and Fluorine-19 NMR Methods." Link to electronic version, 1999. http://www.wpi.edu/Pubs/ETD/Available/etd-100999-170738/.

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36

Misal, Nilimb V. Mr. "A Fast Parallel Method of Interleaved Fft for Magnetic Resonance Imaging." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1164733382.

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37

TRO', ROSELLA. "Applicability of Advanced Diffusion Magnetic Resonance Imaging in clinical routine of Neonatal Data." Doctoral thesis, Università degli studi di Genova, 2022. http://hdl.handle.net/11567/1090449.

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Diffusion Magnetic Resonance Imaging (dMRI), a variant of conventional MRI based on the tissue water diffusion rate, has recently gathered an extraordinary interest among the scientific community due to the relationships found between several neurological and neurosurgical pathologies and alterations in diffusivity of both white and gray matter. It can thus be considered the imaging method of choice to study the brain, and several steps forward have been made from Diffusion Tensor Imaging (DTI) - the method which first showed the capabilities of dMRI - to advanced diffusion analysis meth

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38

Hudson, Alexander Morgar James. "Proton detected '1'3C imaging : implementation and development." Thesis, University of Nottingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299710.

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39

Suever, Jonathan D. "MRI methods for predicting response to cardiac resynchronization therapy." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50224.

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Cardiac Resynchronization Therapy (CRT) is a treatment option for heart failure patients with ventricular dyssynchrony. CRT corrects for dyssynchrony by electrically stimulating the septal and lateral walls of the left ventricle (LV), forcing synchronous con- traction and improving cardiac output. Current selection criteria for CRT rely upon the QRS duration, measured from a surface electrocardiogram, as a marker of electrical dyssynchrony. Unfortunately, 30-40% of patients undergoing CRT fail to benefit from the treatment. A multitude of studies have shown that presence of mechanical dyssynch

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40

Gariba, 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.

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41

Schall, Melissa [Verfasser], Nadim Joni [Akademischer Betreuer] Shah, and Achim [Akademischer Betreuer] Stahl. "Development and application of quantitative magnetic resonance imaging methods / Melissa Schall ; Nadim Joni Shah, Achim Stahl." Aachen : Universitätsbibliothek der RWTH Aachen, 2019. http://d-nb.info/1193255996/34.

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42

Ippoliti, Matteo [Verfasser]. "Development and optimization of methods for quantitative Magnetic Resonance Imaging: QSM and DCE-MR / Matteo Ippoliti." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2021. http://d-nb.info/1241539871/34.

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43

Salvati, Roberto. "Development of Magnetic Resonance Imaging (MRI) methods for in vivo quantification of lipids in preclinical models." Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1B026/document.

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L'obésité est associée à une augmentation de la morbidité et de la mortalité liée à de nombreuses maladies, y compris le diabète de type 2, l'hypertension et des pathologies hépatiques menant à une surcharge lipidique d’origine non alcoolique. Récemment, l’imagerie par résonance magnétique (IRM) est devenue la méthode de choix pour la quantification non invasive de la graisse. Dans cette thèse, les méthodes d'IRM ont été étudiées sur un scanner préclinique de 4.7T in vitro (fantômes MR) et in vivo (souris). Deux algorithmes de quantifications de la graisse -la méthode de Dixon et l’algorithme

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44

Li, Ningzhi. "The convergence envelope for iterative estimation in SS-PARSE." Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2008m/li.pdf.

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45

Varghese, Juliet Jaison. "A Magnetic Resonance Imaging Method to Non-Invasively Measure Blood Oxygen Saturation." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1471622211.

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46

Berglund, Johan. "Separation of Water and Fat Signal in Magnetic Resonance Imaging : Advances in Methods Based on Chemical Shift." Doctoral thesis, Uppsala universitet, Enheten för radiologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-158111.

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Magnetic resonance imaging (MRI) is one of the most important diagnostic tools of modern healthcare. The signal in medical MRI predominantly originates from water and fat molecules. Separation of the two components into water-only and fat-only images can improve diagnosis, and is the premier non-invasive method for measuring the amount and distribution of fatty tissue. Fat-water imaging (FWI) enables fast fat/water separation by model-based estimation from chemical shift encoded data, such as multi-echo acquisitions. Qualitative FWI is sufficient for visual separation of the components, while

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47

White, Natalie. "Optimization of Expression and Purification Methods for the Study of Protein-Based Magnetic Resonance Imaging Contrast Agents." Digital Archive @ GSU, 2011. http://digitalarchive.gsu.edu/chemistry_theses/42.

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Magnetic Resonance Imaging instruments rely on a contrast agent to provide high-resolution images of tissues in vivo. However, current clinical contrast agents are hindered by low relaxivity and fast correlation time, necessitating high injection dosages. These concerns, among others, have driven the development of a class of protein-based contrast agents (ProCAs), by design of lanthanide binding sites into a scaffold protein. ProCA1 has a higher reported relaxivity and dosage efficiency than current contrast agents. In this study, expression and Glutathione-S-Transferase purification procedu

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48

Karakosta, Eleni. "Soluble drug release from a non-swelling polymer matrix studied by magnetic resonance and other imaging methods." Thesis, University of Surrey, 2006. http://epubs.surrey.ac.uk/844586/.

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Research in the area of controlled drug release is increasingly important in the pharmaceutical industry both from quality of life and commercial perspectives. One form of controlled release is of active components incorporated in solid polymer matrices. Understanding the nature and control of drug release is focal to the effective control and targeting of drugs. This will allow the prediction and modelling of new delivery systems. The aim of this thesis is to determine the principal manufacturing parameters affecting the release of a soluble drug from a non-swelling polymer matrix and so to u

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49

Lemdiasov, Rostislav A. "A general purpose computational approach to the design of gradient coils for arbitrary geometries." Worcester, Mass. : Worcester Polytechnic Institute, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-09214-155502/.

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50

Koonjoo, Neha. "Development of Overhauser-enhanced magnetic resonance imaging in vivo : application to molecular imaging of proteolysis." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0157/document.

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Ce travail fait l’objet d’une avancée scientifique dans le développement de la technique d’IRM rehaussée par l’effet Overhauser dans la souris à 0,2 T. Cette dernière repose sur le transfert de polarisation des spins électroniques saturés d’un radical libre vers les spins des protons (généralement de l’eau) voisins pour rehausser le signal RMN du proton. Notre équipe a développé cette technique pour détecter une activité protéolytique au travers de deux stratégies. La première partie de la thèse a été de détecter pour la première fois une activité protéolytique in situ dans des souris saines e

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