Search for dissertations about: "Technegas"

Showing result 1 - 5 of 7 swedish dissertations containing the word Technegas.

  2. 1. Tomographic ventilation-perfusion lung scintigraphy in cardiopulmonary disease

    Author : Jonas Jögi; Lund Klinisk fysiologi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Technegas; Ventilation-Perfusion Single Photon Emission Computed Tomography; Chronic obstructive pulmonary disease; Heart failure; Pulmonary embolism;

    Abstract : Respiration relies, among other things, on the balance between regional ventilation and perfusion in the lungs. There are many cardiopulmonary diseases, such as pulmonary embolism (PE), chronic obstructive pulmonary disease (COPD) and left heart failure (LHF), which can affect respiration negatively. READ MORE

  4. 2. Quantification of pulmonary scintigraphy

    Author : Jiahua Xu; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Emphysema; Inhomogeneity; Perfusion; scintigraphy; SPECT; 99mTc-Technegas; Ventilation; V Q;

    Abstract : Modern nuclear medicine techniques, such as SPECT (single photon emission computed tomography), enable quantification and localisation of lung function in small lung elements, but appropriate methods are not yet available. The aim of the present project was therefore to develop and evaluate methods for mapping lung function in planar scintigrams and in SPECT. READ MORE

  5. 3. The impact of airway-irritating exposure and wet work on subjects with allergy or other sensitivity : epidemiology and mechanisms

    Author : Pernilla Wiebert; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Air pollution; allergic rhinitis; allergy; asthma; blood; carbonaceous; circulation; clearance; cohort; dermatitis; epidemiology; exposure assessment; Indium-111; inhalation; job-exposure matrix; lung; occupation; retention; Technegas generator; Technetium-99m; translocation; ultrafine particles;

    Abstract : The prevalence of asthma and allergies is increasing, which means that the proportion of workers on the labour market with allergy or other sensitivity also increases. It is as of yet not known to what extent these persons with an elevated sensitivity in the airways or the skin are affected by exposure to irritating substances at work. READ MORE

  6. 4. Gas Exchange in the Normal Lung : Experimental studies on the effects of positive end-expiratory pressure and body position

    Author : Mats J. Johansson; Sten Walther; Gunnar Nicolaysen; John-Peder Escobar Kvitting; Stefan Lundin; Linköpings universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : BACKGROUND: The principal function of the lung is gas exchange requiring adequate ventilation and perfusion at the level of the alveoli. The efficiency of gas exchange is depending on the distributions of regional ventilation (V) and pulmonary blood flow (Q) and their correlation. READ MORE

  7. 5. Body posture and gravity as determinants of lung perfusion and ventilation

    Author : Malin Ax; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Normal lung gas exchange depends on an intimate match between regional ventilation and regional blood flow in the lungs. The beneficial effect of the prone posture in acute respiratory failure is well documented but the mechanisms involved are not completely understood. READ MORE