Sökning: "perfusion index"
Visar resultat 1 - 5 av 37 avhandlingar innehållade orden perfusion index.
1. Placental Function : An Epidemiological and Magnetic Resonance Study
Sammanfattning : Placental function is central for normal pregnancy and in many of the major pregnancy disorders. We used magnetic resonance imaging techniques to investigate placental function in normal pregnancy, in early and late preeclampsia and in intrauterine growth restriction. LÄS MER
2. Radiolabeled acetate PET in oncology imaging : studies on head and neck cancer, prostate cancer and normal distribution
Sammanfattning : The use of positron emission tomography (PET) for imaging in oncology has grown rapidly in recent years. 2-[18F]-fluorodeoxyglucose (FDG) is the most common tracer of PET, although drawbacks exist. LÄS MER
3. Quantification of pulmonary scintigraphy
Sammanfattning : 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. LÄS MER
4. Pulse oximetry: Evaluation of a potential tool for early detection of critical congenital heart disease
Sammanfattning : Background: About one third of newborns with life-threatening congenital heart disease leave newborn nurseries without the problem being recognized, and risk death or serious damage from circulatory collapse. The main aim of this thesis has been to evaluate if routine newborn screening with pulse oximetry could improve early in-hospital detection of newborns with duct-dependent circulation (DDC). LÄS MER
5. Laser Doppler Perfusion Monitoring and Imaging especially as regards testing for sympathetic nerve function
Sammanfattning : The operating principle of all laser Doppler methods is based on the fact that incident photons shift in wavelength when interacting with moving blood cells passing through the microvascular network. After photodetection and further signal processing, the recorded parameter can be considered an arbitrary measure of tissue blood flow, and this is referred to as ?perfusion?. LÄS MER