Sökning: "Ventilation-Perfusion Single Photon Emission Computed Tomography"
Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Ventilation-Perfusion Single Photon Emission Computed Tomography.
1. 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
2. Tomographic ventilation-perfusion lung scintigraphy in cardiopulmonary disease
Sammanfattning : 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. LÄS MER
3. Pathophysiological and Histomorphological Effects of One-Lung Ventilation in the Porcine Lung
Sammanfattning : Thoracic surgical procedures require partial or complete airway separation and the opportunity to exclude one lung from ventilation (one-lung ventilation, OLV). OLV is commonly associated with profound pathophysiological changes that may affect the postoperative outcome. LÄS MER
4. The Effect of CO2-Pneumoperitoneum on Ventilation Perfusion Distribution of the Lung
Sammanfattning : Laparoscopic operations are a common and popular way for abdominal procedures. They are usually performed by insufflation of carbon dioxide (CO2) into the abdominal cavity. However, insufflation of CO2 may interfere with cardiac and circulatory as well as respiratory functions. The CO2-pneumoperitoneum (PP) may cause hypercarbia and acidosis. LÄS MER
5. Lung function measured with SPECT in infants and children with bronchopulmonary dysplasia : correlation with respiratory management and clinical grading
Sammanfattning : Chronic lung disease, bronchopulmonary dysplasia (BPD) is a common and severe complication among extremely preterm born infants and infants with lung hypoplasia. Clinical grading of BPD is performed at 36 weeks postmenstrual age (or 56 days of age in moderately preterm infants) based on the need for supplemental oxygen. LÄS MER