Sökning: "Attenuation"
Visar resultat 16 - 20 av 408 avhandlingar innehållade ordet Attenuation.
16. FRC in acute lung injury. Experimental and clinical studies
Sammanfattning : Respiratory failure due to acute lung injury (ALI) of diffuse inflammatory origin is a major cause of respiratory failure treated in intensive care units. In ALI, FRC is reduced by various mechanisms associated with hypoxemia and consolidation of the lung. LÄS MER
17. On Health-Related Quality of Life and Diagnostic Improvements in Rhinosinusitis
Sammanfattning : Rhinosinusitis is defined as an inflammatory process involving the mucosa of the nose and one or more of the paranasal sinuses. The aims of the work presented in this thesis were to investigate the degree to which rhinosinusitis affects the health-related quality of life (HRQOL), and to determine whether the diagnosis of this condition can be improved using Doppler ultrasound. LÄS MER
18. Attenuation correction in pulmonary and myocardial single photon emission computed tomography
Sammanfattning : The objective was to develop and validate methods for single photon emission computed tomography, SPECT, allowing quantitative physiological and diagnostic studies of lung and heart. A method for correction of variable attenuation in SPECT, based on transmission measurements before administration of an isotope to the subject, was developed and evaluated. LÄS MER
19. Preclinical X-ray imaging beyond attenuation contrast
Sammanfattning : Medical imaging is a cornerstone of modern clinical practice. Here, X-ray imaging is the given choice for rapid morphological imaging with excellent spatial resolution, albeit with sensitivity often insufficient for resolving subtle pathological changes to soft tissues. LÄS MER
20. Attenuation of the behavioural effects of alcohol : antagonism and acute tolerance
Sammanfattning : .... LÄS MER