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.
Results
Showing 1 to 20 of 553 for “"Magnetic resonance imaging (MRI)"”.
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A novel encoding technology for magnetic resonance imaging (MRI)
Thesis (Ph. D.)--Massachusetts Institute of Technology, Whitaker College of Health Sciences and Technology, 1996.
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Magnetic Resonance Imaging (Mri) Studies of the Rat Olfactory System
In vivo MR-imaging was also applied to study effects of neonatal, unilateral olfactory denervation on postnatal olfactory bulb growth. The in vivo imaging data were used to quantify the reduction in laminar volumes of the denervated bulb, compared to contralateral control bulb, unoperated normal …
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Optimization algorithms in compressive sensing (CS) sparse magnetic resonance imaging (MRI)
Magnetic Resonance Imaging (MRI) is an essential instrument in clinical diag- nosis; however, it is burdened by a slow data acquisition process due to physical limitations. Compressive Sensing (CS) is a recently developed mathematical framework that o ers signi cant bene ts in MRI image speed by …
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Validation of magnetic resonance imaging (MRI) as a tool to detect inflammation in the brain
… aim of this thesis was to develop and validate MRI tools for measurement of neuroinflammation. Twenty healthy volunteers participated in a randomised double-blind, placebo-controlled, crossover study including MRI scans, electroencephalography (EEG) recording, and blood sample collection before …
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The role of magnetic resonance imaging (MRI) in external beam radiotherapy treatment planning (RTP) for cervical cancer
… with considerable uncertainty and variability. Magnetic resonance imaging (MRI) has a proven benefit in the staging of cervical cancer and for image guided adaptive brachytherapy; however there is a paucity of data for the role of MRI in delineating external beam radiotherapy treatment volumes. …
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Cultures of Technoscience: A Study of Magnetic Resonance Imaging (Mri) Research in the United States and India
… or globalism/localism. The development of MRI, since its birth in the early 1970s, has been located within a transnational network. This network has been constituted by a fairly flexible flow of scientists, knowledge, and artifacts across national boundaries. However, relationships between …
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A vector based approach for high frequency prospective correction of rigid body motion in Magnetic Resonance Imaging (MRI)
Magnetic Resonance Imaging (MRI) is remarkable in that it is possible to obtain image resolutions much smaller than the wavelength of the radiated signal. This is achieved through the use of specialised gradient coils that linearly manipulate the magnitude of the magnetic field within the imaging …
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Comparison of Cone-Beam Computed Tomography (CBCT), Fan-Beam Computed Tomography (FBCT), and Low-Field Magnetic Resonance Imaging (MRI) for Detection of Equine Fetlock Lesions
Computed tomography (CT) and magnetic resonance imaging (MRI) have been increasingly applied to diagnosing lameness localised to the fetlock region in standing horses. A full understanding of the benefits and limitations of CT and MRI for detection of bone and soft tissue lesions is essential for …
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Self-Diffusion and Temperature Mapping of Food Materials Using MRI
… Studying self-diffusion noninvasively using magnetic resonance imaging (MRI) techniques is useful for understanding dynamic phenomena which occur during food processing. The overall objective of this study was to measure the self-diffusion coefficient using magnetic resonance imaging (MRI) …
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Diffusional effects in magnetic resonance imaging and microscopy
… in the information content of nuclear magnetic resonance (NMR) images have recently been sought through the development of new contrast mechanisms for magnetic resonance imaging (MRI) and NMR microscopy. This thesis addresses the role of molecular diffusion in NMR and develops new …
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IMAGING SPECIFIC ABSORPTION RATE WITH MR THERMOMETRY USING PARAMAGNETIC LANTHANIDE COMPLEXES AND IN VIVO GABA MR SPECTROSCOPY IN MOVEMENT DISORDERS
Magnetic Resonance Imaging (MRI) is a popular imaging modality due to its ability to provide excellent soft tissue contrast without exposure to ionizing radiation. It can be used for temperature monitoring (thermometry) as well as for assessing the biochemistry in vivo (MRS). This dissertation …
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The design, syntheses, and physico-chemical studies of MRI contrast agents
Magnetic Resonance Imaging (MRI) is a popular and powerful clinical diagnostic tool. The development of MRI contrast agents allows for even greater diagnostic ability. This thesis will address the design, syntheses and physico-chemical studies of two specific classes of MRI contrast agents: the …
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Lanthanide and transition metal complexes of nitrogen and oxygen donor macrocyclic ligands
… metal complexes as contrast agents for magnetic resonance imaging (MRI) is discussed.
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Nitroxide Spin Labels as NMR Contrast Agents: Delivery, Metabolism and Relaxation
… potential of nitroxides as contrast agents for magnetic resonance imaging (MRI) has been studied. The difficulties involved in using nitroxides as in vivo MRI contrast agents, such as premature metabolic convertion of nitroxides to their nonparamagnetic state, lack of tissue selectivity, and …
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Systematic review of imaging studies in the lateral orbitofrontal circuit in bipolar type I disorder
… was to review the available published structural magnetic resonance imaging (MRI) data in bipolar type I disorder, looking for any evidence of a change in size of the structures in lateral orbitofrontal circuits relative to the conceptually unaffected motor circuit. Structures in the motor circuit …
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Measurement of transient moisture profiles and structural changes during the drying and cooling of maize using MRI
… 27, 49, 71, and 93$\sp\circ$C, were used. Magnetic resonance imaging (MRI) was applied to nondestructively acquire proton images from the corn kernels during drying and cooling. A three-dimensional Fourier transform pulse sequence was used.
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Towards automating cine DENSE MRI image analysis : segmentation, tissue tracking and strain computation
Over the past two decades, magnetic resonance imaging (MRI) has developed into a powerful imaging tool for the heart. Imaging cardiac morphology is now commonplace in clinical practice, and a plethora of quantitative techniques have also arisen on the research front. Myocardial tagging is an …
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