Search for dissertations about: "Hyperpolarized"

Showing result 1 - 5 of 8 swedish dissertations containing the word Hyperpolarized.

  1. 1. Hyperpolarized Nuclei for NMR Imaging and Spectroscopy – Methodology and model studies of lung and vascular function

    University dissertation from Sven Månsson, Dept. of Experimental Research, Malmö University Hospital, SE–205 02 Malmö, Sweden

    Author : Sven Månsson; [2002]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lung function; 3He; 13C; 129Xe; Elektroteknik; Electrical engineering; Magnetic resonance; hyperpolarized;

    Abstract : Based on the principle of nuclear magnetic resonance (NMR), magnetic resonance imaging (MRI) and magnetic resonance spectroscopy (MRS) are widely used methods in medical diagnostic imaging and biological research. Clinical MRI has been restricted to imaging of protons, for reasons of sensitivity. READ MORE

  2. 2. Contrast-Enhanced Magnetic Resonance Angiography - Development and optimization of techniques for paramagnetic and hyperpolarized contrast media

    University dissertation from Jonas Svensson, Dept Radiation Physics, Malmö University Hospital, SE-205 02 Malmö, Sweden

    Author : Jonas Svensson; [2002]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; egenskaper elektriska; Kondenserade materiens egenskaper:elektronstruktur; spectroscopy; relaxation; Angiography; Magnetic resonance; Contrast-enhanced; Hyperpolarized; Condensed matter:electronic structure; 13C; supraconductors; electrical; magnetic and optical properties; magnetiska och optiska ; supraledare; magnetisk resonans; spektroskopi;

    Abstract : Contrast-enhanced magnetic resonance angiography (CE-MRA) is a diagnostic method for imaging of vascular structures based on nuclear magnetic resonance. Vascular enhancement is achieved by injection of a contrast medium (CM). READ MORE

  3. 3. Hyperpolarized 3He-diffusion MRI in evaluation of lung structure in emphysema. Validation and development of the method

    University dissertation from Department of Diagnostic Radiology, Lund University

    Author : Sandra Diaz; [2008]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Helium; Hyperpolarized; MRI; ADC; Emphysema;

    Abstract : Abstract COPD is a major cause of chronic morbidity and mortality throughout the world. It is a preventable and treatable disease. Smoking is the most commonly encountered risk factor for COPD and the habit now unfortunately starts at earlier ages than before. READ MORE

  4. 4. NMR Imaging of Flow and Perfusion using Hyperpolarized Nuclei: Theoretical Considerations and Application to Experimental Models

    University dissertation from Edvin Johansson, Deptartment of Medical Radiation Physics, Lund University Hosptial, Lund

    Author : Edvin Johansson; [2003]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Nukleärmedicin; radiobiologi; radiobiology; Nuclear medicine; Perfusion; Macroscopic flow; Hyperpolarized tracers; Nuclear magnetic resonance NMR ; Magnetic resonance imaging MRI ;

    Abstract : In the studies presented in this thesis, hyperpolarized tracers have been used for the study of macroscopic flow and capillary perfusion with magnetic resonance imaging. The feasibility of performing vascular studies using echo-planar imaging (EPI) and hyperpolarized 129Xe was investigated using xenon dissolved in ethanol prior to injection into a flow phantom. READ MORE

  5. 5. Neural circuits engaged in mastication and orofacial nociception

    University dissertation from Umeå : Umeå university

    Author : Tuija Athanassiadis; K-G Westberg; Sten Grillner; [2009]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; rhythmical jaw movements; central pattern generator; trigeminal system; rabbit; Rat; c-Fos; nociceptors; muscle pain; muscle spindle afferents; glutamate; MEDICINE Physiology and pharmacology Physiology Neurophysiology; MEDICIN Fysiologi och farmakologi Fysiologi Neurofysiologi; fysiologi; Physiology;

    Abstract : A deeper understanding of both movement control and the effects of nociceptor inputs on our motor systems is critical for proper clinical diagnosis of musculo-skeletal dysfunctions and for development of novel rehabilitation schemes. In the jaw system, masticatory movements are produced by a central pattern generator (CPG) located in the brainstem. READ MORE