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 7 of 7 for “"acquisition sequence"”.
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A comparison of imaging modalities and decoding methods for detecting semantic information in the brain
… with 7T-fMRI– I optimised a 7T-fMRI acquisition sequence that improved sensitivity in the vATL while maintaining sensitivity across the rest of the brain. I demonstrated that a multi-echo, multiband sequence achieves these aims. In Chapter 5 I used the acquisition sequence optimised …
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An Information Theory Model For Optimizing Quantitative Magnetic Resonance Imaging Acquisitions
… from quantitative parameter values. Currently, acquisition parameter selection is performed empirically for quantitative MRI. Tuning parameters for different scan times, tissues, and resolutions requires some measure of trial and error. There is an opportunity to quantitatively optimize these …
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The Use of Driven Equilibrium Conditions in the Measurement of NMR Relaxation Times
… equilibrium to be obtained with only one non-acquisition sequence is presented herein and should prove invaluable in variable contrast imaging. A DESPOT type approach has also been successfully applied to the measurement of T1. T_1's can be measured, using this approach significantly faster …
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L1 Acquisition of Japanese Particles: A Corpus-Based Study
… examination of L1 Japanese particle acquisition using two sets of corpora of naturalistic speech, JCHAT, longitudinal speech data of three Japanese children and the mothers (Miyata 2004a, b, and c, and MacWhinney 2000), and CHJ, adult-to-adult telephone conversation. The analysis …
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"I can speak German - und Deutsch" : the development and use of code-switching among simultaneous and successive English-German bilingual children
… about bilingualism and bilingual language acquisition, followed by an introduction to various approaches to the study of code-switching. After a brief overview over its history, code-switching is identified as one out of several language contact phenomena. The introduction to the …
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Method Development of 13C, 1H and 31P Magnetic Resonance Spectroscopy for use in Traumatic Brain Injury
… infusion research has mainly focused on acquisition based methodological development, specifically when observing the carbonyl region. This thesis describes the infrastructural development required to run a robust dynamic 13C MRS infusion study with focus on data acquisition, sequence …
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Improved Visualization and Quantification for Hyperpolarized 129Xe MRI
… resulting images. Before that, a standardized acquisition with a well-understood relationship between 129Xe dose and image quality needs to be established for efficient and cost-effective acquisitions. Moreover, we also seek to understand the origins of ventilation defects as well as …