Sökning: "T1-mapping"

Visar resultat 1 - 5 av 6 avhandlingar innehållade ordet T1-mapping.

1. 1. Measurement of T1 relaxation time in lungs - Preclinical and clinical MRI applications to COPD

   Författare :Daniel Alamidi; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Magnetic Resonance Imaging; biomarker; tobacco smoke; mouse; smoking; lung imaging; Chronic Obstructive Pulmonary Disease; ultrashort echo time UTE ; T1 mapping; longitudinal relaxation time;

   Sammanfattning : Monitoring of regional lung function in clinical trials of chronic obstructive pulmonary disease (COPD) requires alternative endpoints beyond global pulmonary function tests (PFTs), which is the most common approach for diagnosing lung function abnormalities in humans. A promising magnetic resonance imaging (MRI) biomarker of lung disease in humans and animals is the T1 relaxation parameter. LÄS MER

3. 2. Signal Processing for Spectroscopic Applications

   Författare :Erik Gudmundson; Peter Stoica; Peter Händel; Stoica Stoica; Uppsala universitet; []
   Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; spectral estimation; spectroscopic techniques; MRI; NMR; NQR; signal detection; parameter estimation; missing data; non-uniform sampling; damped sinusoids; detection of explosives; T1-mapping; relaxometry; brain imaging; skin imaging; blood velocity estimation; medical ultrasound; Signal processing; Signalbehandling; Elektroteknik med inriktning mot reglerteknik; Electrical Engineering with specialization in Automatic Control;

   Sammanfattning : Spectroscopic techniques allow for studies of materials and organisms on the atomic and molecular level. Examples of such techniques are nuclear magnetic resonance (NMR) spectroscopy—one of the principal techniques to obtain physical, chemical, electronic and structural information about molecules—and magnetic resonance imaging (MRI)—an important medical imaging technique for, e. LÄS MER

4. 3. Computed Tomography and Magnetic Resonance Imaging in Determination of Human Body Composition. Methodological and Applied Studies

   Författare :John Brandberg; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
   Nyckelord :X-ray Computed Tomography; Magnetic Resonance Imaging; Body Composition; Obesity; Metabolic Syndrome X; Glucose Metabolism; Growth Hormone; Fatty Liver; Intra-Abdominal Fat;

   Sammanfattning : Background: Computed tomography (CT) and magnetic resonance imaging (MRI) provide important research opportunities due to their unique capability of characterizing and quantifying tissues and organs. Ionizing radiation is a limitation using CT, and recent developments aiming to improve MRI for determination of body composition have not been validated. LÄS MER

5. 4. Myocardial hypertrophy and extracellular volume by cardiovascular magnetic resonance imaging

   Författare :Magnus Lundin; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP;

   Sammanfattning : Cardiovascular disease contributes greatly to the disease burden in many developed countries. Cardiovascular magnetic resonance (CMR) is a powerful imaging modality that can diagnose a vast range of these diseases. LÄS MER

7. 5. Non-Invasive Characterization of Liver Disease : By Multimodal Quantitative Magnetic Resonance

   Författare :Markus Karlsson; Peter Lundberg; Gunnar Cedersund; Nils Dahlström; Stergios Kechagias; Steven Sourbron; Linköpings universitet; []
   Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

   Sammanfattning : There is a large and unmet need for diagnostic tool that can be used to characterize chronic liver diseases (CLD). In the earlier stages of CLD, much of the diagnostics involves performing biopsies, which are evaluated by a histopathologist for the presence of e.g. fat, iron, inflammation, and fibrosis. LÄS MER