Sökning: "pulmonary density"

Visar resultat 6 - 10 av 24 avhandlingar innehållade orden pulmonary density.

  1. 6. Applications of Magnetic Tracers in the Human Lung and Gastrointestinal Tract

    Författare :Mikael Forsman; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; inverse solution; gastrointestinal motility; inhaled particles; gastric emptying; welding dust; MPG; pulmonary clearance; occupational health; magnetopneumography; multipole analysis; transit time;

    Sammanfattning : The use of ferrimagnetic material as a tracer represents a noninvasive approach in physiological measurements. Concerning the lung, magnetopneumography, MPG, is a unique technique to estimate retained dust in the lung, using the magnetizable dust fraction as a tracer. First a strong constant magnetic field is briefly applied to the thorax. LÄS MER

  3. 7. Radiological imaging of pulmonary emphysema : preoperative evaluation of candidates for lung volume reduction surgery

    Författare :Kerstin Cederlund; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Computed tomography; quantitative computed tomography; emphysema; lung volume reduction surgery; lung scintigraphy.;

    Sammanfattning : Lung volume reduction surgery (LVRS) for pulmonary emphysema, first described by Brantigan in 1957, was re-introduced by Cooper et al in 1995. From a surgical point of view, information on the extent and distribution of emphysema is mandatory and also partly determines the outcome. LÄS MER

  4. 8. Occupational exposure to particles in relation to chronic obstructive pulmonary disease and cardiovascular disease

    Författare :Karin Grahn; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Objective The working life is expanding with increased retirement ages as the population is aging, in Sweden but in also other parts of the world. However, workers with poor health might not cope with working in higher ages. LÄS MER

  5. 9. Organic dust-induced signaling in human pulmonary epithelial cells : emphasis on effects of cAMP modulation

    Författare :Karin Burvall; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : To study signaling transductions in innate immunity a model system was applied where A549 alveolar epithelial type II cells were used as target and organic dust collected in swine confinement buildings as stimulus. The dust represents a complex mixture of feed and faecal particles, dander from swine, bacteria (whole bacteria and cell wall components) and fungi. LÄS MER

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

    Författare :Daniel Alamidi; Göteborgs universitet; []
    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