Blar i Faculty of Mathematics and Natural Sciences på emneord "MRI"
Viser treff 1-13 av 13
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Application of MRI in studies of tetrahydrofuran hydrates in quartz sand at atmospheric pressure
(Master thesis, 2017-12-06)Natural gas hydrates form under low temperatures and high pressures. They can be found in abundance in permafrost environments and under the sea floor, where the temperature and pressure conditions ensure their stability. ... -
Automatisk detektering av den Arterielle Input Funksjonen i DCE-MRI
(Master thesis, 2023-06-02)Formål: I moderne DCE-MRI bildeanalyse er AIF avgjørende for å få korrekte farmakokinetiske verdier. AIF kan ekstraheres enten halvautomatisk eller manuelt. Uansett metode er det imidlertid dårlig reproduserbarhet og risiko ... -
Deep-learning based reconstruction of dynamic non-Cartesian fMRI: Application to silent imaging
(Master thesis, 2023-06-02) -
Effect of Free Water Elimination on Diffusion Indices in Healthy Volunteers and Patients with Multiple Sclerosis
(Master thesis, 2018-11-08)Diffusion tensor imaging (DTI) is a technique in magnetic resonance imaging (MRI) that can be used to image the brain microstructure beyond the resolution that is achievable using conventional imaging. By utilizing DTI, it ... -
An Experimental Study of Methane Hydrates in Sandstone Cores
(Master thesis, 2015-05-31)Natural gas hydrates exist in large quantities around the world, located in the subsurface of permafrost and oceanic environments. Future energy harvest from production of methane gas encapsulated in natural gas hydrates ... -
Glioma Microstructure Modeling from Diffusion MRI: A Self-Supervised Deep Learning Approach
(Master thesis, 2023-06-02)Purpose: Gliomas are a highly heterogeneous group of primary brain tumors with poor prognosis, and treatment monitoring is challenging with its current diagnostic tool being invasive biopsy. In recent years, diffusion-weighted ... -
Magnetic Resonance Imaging of Hydrate Phase Transitions in Sediments
(Master thesis, 2017-12-21)Natural gas hydrates, simplified described as gas compressed in ice, are a substance existing in large quantities around the world. Their existence requires elevated pressures and low temperature. They are therefore found ... -
Multimodal MRI-based Stratification of Motor Phenotypes in Parkinson's Disease
(Master thesis, 2023-06-02)Selv om Parkinsons sykdom ble beskrevet for over 200 år siden, er dens kliniske heterogenitet fortsatt ukjent. Forskning søker nå å stratifisere sykdommen ved å identifisere pasientgrupper med ulike kliniske egenskaper. ... -
Teknologi for MRI av hjernens funksjon og biokjemiske sammensetning
(Master thesis, 2018-04-07)This thesis is divided into two parts. The first part addresses synchronisation between the rate of frequency the MR system used for fMRI examinations at Haukeland universitetssjukehus operates on (10 Mhz) and the sampling ... -
Transport and storage of CO2 in natural gas hydrate reservoirs
(Peer reviewed; Journal article, 2009-02)Storage of CO2 in natural gas hydrate reservoirs may offer stable long term deposition of a greenhouse gas while benefiting from methane production, without requiring heat. By exposing hydrate to a thermodynamically preferred ... -
Variability of perfusion estimates from synthetic and clinical magnetic resonance imaging data
(Master thesis, 2023-02-13) -
Visual analysis of hydrate growth and layering behaviour in hydrate bearing silica and quartz sediments
(Master thesis, 2020-08-05)Gas hydrates are crystalline solids with cage-like structures of water containing a guest molecule. They have sparked great interest due to their potential as an energy source, and the possibility of utilizing them for ... -
Volume Increase of the Hippocampus after Electroconvulsive Therapy - The Role of the Electric Field and the Individual Differences due to Body Mass Index, Sex and Age
(Master thesis, 2021-06-15)Electroconvulsive therapy (ECT) involves passing an electrical current through the brain, intentionally causing a brief seizure. In Norway, it is common to calculate the dose according to an age-based method. Recent studies ...