Sökning: "DTPA"

Visar resultat 16 - 20 av 36 avhandlingar innehållade ordet DTPA.

  1. 16. Non-Invasive Assessment of Liver Fibrosis with 31P-Magnetic Resonance Spectroscopy and Dynamic Contrast Enhanced Magnetic Resonance Imaging

    Författare :Bengt Norén; Staffan Wirell; Peter Lundberg; Peter Leander; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : The present study aims at demonstrating phosphorus metabolite concentration changes and alterations in uptake/excretion of a hepatocyte specific contrast agent in patients with diffuse - or suspected diffuse - liver disease by applying two non-invasive quantitative MR techniques and to compare the results with histo-pathological findings, with focus on liver fibrosis.In the first study phosphorus-31 MR spectroscopy using slice selection (DRESS) was implemented. LÄS MER

  3. 17. Gadodiamide injection for Enhancement of MRI in the CNS. Applications, dose, field and time dependence

    Författare :Per Åkeson; Malmö Diagnostisk radiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Clinical physics; Phantom study.; Comparative study; Human; Time dependence; Dosage; Enhancement; Gadolinium; MRI contrast media; Contrast media; Magnetic resonance imaging; Spine; Brain neoplasms; secondary; Brain; radiology; tomography; medical instrumentation; Klinisk fysiologi; radiologi; tomografi; medicinsk instrumentering;

    Sammanfattning : Aims of the study The aims of this study using Gadodiamide injection were to investigate: · Whether Gadodiamide injection was comparable to Gd-DTPA for the enhancement of CNS lesions. · The contrast effect at different field strengths. · The effective time-window for the enhancement of blood-brain barrier damage. LÄS MER

  4. 18. Inverse ration ventilation : experimental studies on pulmonary integrity and gas exchange

    Författare :Ulf Ludwigs; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :respiration; artificial gas exchange lung function acute respiratory distress syndromeacute lung injury inverse ratio ventilation ventilator induced lung injury intrinsic PEEP lungclearance;

    Sammanfattning : In this thesis, pulmonary and circulatory effects of inverse ratio ventilation (IRV) have been studied experimentally. Comparisons have been made between volume and pressure controlled IRV and conventional ventilation under conditions of equal minute ventilation and end-expiratory alveolar pressure levels. LÄS MER

  5. 19. Epidemiological characterisation of Bordatella pertussis in Sweden, 1970-2004

    Författare :Abdolreza Advani; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Worldwide, Bordetella pertussis causes some 50 million cases of pertussis, and an estimated 2-300,000 fatalities each year. In Sweden vaccination against pertussis was introduced in the 1950s using diphtheria-tetanus-whole-cell pertussis vaccine (DTPw) until 1979, when it was withdrawn due to concerns about effectiveness. LÄS MER

  7. 20. Ligniners reaktioner med alkalisk väteperoxid

    Författare :Roland Agnemo; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hydrogen Peroxide; Alkaline; Bleaching; Lignin Models;

    Sammanfattning : Under alkaline conditions hydrogen peroxide can be used either as a 1ignin-degrading or a 1ignin-preserving bleaching agent. If heavy metal ions are present and/or silicate is absent in the reaction medium, hydrogen peroxide decomposes via hydroxyl radicals and superoxide ions to oxygen and water. LÄS MER