Sökning: "brain circulation"

Visar resultat 11 - 15 av 72 avhandlingar innehållade orden brain circulation.

  1. 11. Cell-free hemoglobin, hyperoxemia and the immature brain during cardiopulmonary bypass circulation

    Författare :Åsa Jungner; Lund Pediatrik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : .... LÄS MER

  3. 12. Posterior circulation ischemic stroke. Risk factor features, genetic associations and neurovascular anatomy, including findings from the SiGN, MRI-GENIE and GISCOME studies

    Författare :Petrea Frid; Lund Neurologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Posterior circulation brain infarction; Risk factors; genetic association analysis; Magnetic resonance imaging; stroke subtypes; neurovascular anatomy;

    Sammanfattning : .... LÄS MER

  4. 13. Nuclear magnetic resonance and microcirculation: The influence of pulsatile brain-tissue motion on measurements of intravoxel incoherent motion and assessment of haemodynamics using exo- and endogenous tracers

    Författare :Ronnie Wirestam; Lund Medicinsk strålningsfysik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; diagnostic radiology; cortical activation; diffusion; tumor; tumour; ischemic stroke; ischaemic stroke; tracer kinetics; bolus tracking; phase mapping; brain motion; intracranial dynamics; blood flow; haemodynamics; vascularity; MRS; perfusion; MRI; magnetic resonance; Clinical physics; radiology; tomography; medical instrumentation; Klinisk fysiologi; radiologi; tomografi; medicinsk instrumentering;

    Sammanfattning : In this project, the potential of magnetic resonance (MR) imaging and spectroscopy in studies of microcirculation and haemodynamics was evaluated. The spatial and temporal characteristics of human pulsatile brain-tissue movements in healthy individuals, relevant for the understanding of the cerebrospinal-fluid (CSF) circulation and the pathogenesis of hydrocephalus, were thoroughly investigated. LÄS MER

  5. 14. Brain cholesterol metabolism : a study of mouse and man

    Författare :Maura Heverin; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Alzheimer s Disease; 27-hydroxycholesterol; CYP46A1; cholesterol homeostasis.;

    Sammanfattning : The brain is the most cholesterol rich organ in the body and contains about one quarter of the body's total cholesterol. How this cholesterol and its metabolism affects the complex brain under normal and pathological conditions has been the focus of intense research in recent years due to its possible association with the development or progression of neurodegeneration. LÄS MER

  7. 15. Cholesterol homeostasis in the brain : importance of 24S-hydroxylation

    Författare :Dieter Lütjohann; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Brain cholesterol is characterized by a very low turnover with very little exchange with lipoproteins in the circulation. We have investigated whether side chain-hydroxylated cholesterol species are important for elimination of cholesterol from the brain. About 80% of 24S-hydroxycholesterol (24S-OH-Chol) present in the body is present in the brain. LÄS MER