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 9 of 9 for “"dynamic MRI"”.
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Examination of susceptibility effects on functional and dynamic magnetic resonance imaging
… including blood oxygenation level dependent fMRI. The two projects in this work look at the effects of inhomogeneity on functional and dynamic MRI. We simultaneously acquired functional and dynamic MRI (Simulscan) of natural un-cued swallows. Work was done to minimize susceptibility artifacts …
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A Study of Velopharyngeal Area Using Real-Time Magnetic Resonance Imaging With Simultaneous Speech Recordings
… in the study, five males and five females. All MRI-related procedures were performed using a 3-Tesla MRI scanner at the Biomedical Imaging Center, University of Illinois at Urbana-Champaign. Gender differences of the midsagittal palatal structures and levator veli palatini muscle configurations …
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MRI Measures of Neurodegeneration as Biomarkers of Alzheimer's Disease
… stages is an important goal. In this report, MRI-based markers of neurodegeneration are explored as biomarkers of AD. In the first chapter, the sensitivity of cross-sectional MRI biomarkers to neurodegenerative changes is evaluated in AD patients and in patients with a diagnosis of mild …
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Fast MRI with sparse sampling: models, algorithms, and applications
Conventional magnetic resonance imaging (MRI) methods are based on the Shannon-Nyquist sampling theorem. The number of required Nyquist samples grows exponentially with respect to the underlying physical dimension of the imaging problem, resulting in significant difficulty of achieving high …
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3D mathematical model of the hyoid bone and attached muscles during swallowing
… in this study. Each subject lay in a MRI scanner, and was given 5 ml, 10 ml, 15 ml and 20 ml of water to swallow, four times each. During swallowing the 3D structural and 2D dynamic MRI were collected. The origin and insertion of the submental muscles (SM), posterior belly of digastric …
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Building Patient-Specific Models of the Heart to Study Cardiac Growth and Remodeling
… (e.g. pressure, heart rate, and ECG) to 4D (e.g. dynamic MRI and CT) data about our cardiovascular system. However, a significant challenge lies in the interpretation of these data, as they provide macroscale information and how this links to microscale mechanisms remains poorly understood. In …
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Atlas driven low-rank reconstruction of dynamic speech magnetic resonance imaging
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-08-01
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Distortion-optimal parallel MRI with sparse sampling: from adaptive spatio-temporal acquisition to self-calibrating reconstruction
… pertain to parallel magnetic resonance imaging (pMRI). The first part of this dissertation addresses adaptive design of spatio-temporal acquisition and reconstruction in model-based pMRI wherein the signal model is a sparse support. We develop a highly-accelerated real-time dynamic MRI technique, …
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Dynamic speech imaging with low-rank approximation
Dynamic speech imaging is a powerful technique for real-time visualization of speech dynamics. As a promising modality for dynamic speech imaging, magnetic resonance imaging (MRI) can provide good soft-tissue contrast in an arbitrary imaging plane with a non-invasive procedure. However, …