Sökning: "GASMAS"

Visar resultat 1 - 5 av 8 uppsatser innehållade ordet GASMAS.

1. 1. Simulations and modeling of light propagation in biological tissue

   Master-uppsats, Lunds universitet/Förbränningsfysik; Lunds universitet/Fysiska institutionen; Lunds universitet/Lunds Tekniska Högskola

   Författare :Emma Hjörneby; [2023]
   Nyckelord :Technology and Engineering;

   Sammanfattning : The GASMAS technique has previously proven useful for examining and measuring the oxygen concentration in the lungs of preterm infants. GASMAS can distinguish absorption by one gas from the bulk absorption of the surrounding media, and can provide an instant, non-invasive and non-destructive way of examining lungs, and diagnosing dangerous conditions such as pneumothorax. LÄS MER

3. 2. Gas in Scattering Media Absorption Spectroscopy in Large Geometries: Towards Monitoring Oxygen in Adult Lungs

   Master-uppsats, Lunds universitet/Förbränningsfysik; Lunds universitet/Fysiska institutionen

   Författare :Anna Brandt; [2022]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : GAs in Scattering Media Absorption Spectroscopy (GASMAS) is a technique to study free gas inside strongly scattering bulk-materials. GASMAS is successful in safely measuring oxygen in lungs of neonates, with low-power tuneable diode-laser spectroscopy at 760 nm. LÄS MER

4. 3. In-vivo study on the stability of the use of gas absorption spectroscopy as a technology for assessing sinus cavity size and oxygen gas concentration

   Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

   Författare :Sara Mekamy; [2020]
   Nyckelord :GASMAS; Sinuses; Stability measurements; Technology and Engineering;

   Sammanfattning : Sinusitis is a common disease caused by a virus or bacteria, with 84% to 91% of cases caused by a viral pathogen. However, physicians prescribe antibiotics for this disease in 85% of all cases. LÄS MER

5. 4. Optimization of measurement geometry for GASMAS lung function monitoring of infants

   Master-uppsats, Lunds universitet/Förbränningsfysik; Lunds universitet/Fysiska institutionen

   Författare :Dennis Leander; [2018]
   Nyckelord :tissue phantom; premature infants; lungs; gas in scattering media absorption spectroscopy; tunable diode laser absorption spectroscopy; Physics and Astronomy; Medicine and Health Sciences;

   Sammanfattning : A technique for measuring oxygen concentration in the lungs of preterm infants is one of the latest advancements in neonatal care. It is called GAs in Scattering Media Absorption Spectroscopy (GASMAS) and enables non-invasive, bed-side monitoring of the lung function of our most fragile patients, preterm newborns. LÄS MER

7. 5. Diode laser spectroscopy for oxygen detection in the lungs of infants

   Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Atomfysik

   Författare :Peilang Liao; [2016]
   Nyckelord :GASMAS; Tunable laser; Transport theory; 3D phantom; Diagnoses; Gas; Lung; Physics and Astronomy;

   Sammanfattning : This thesis work is part of a larger project with final goal to be able to measure the oxygen concentration in the lungs of infants, using non-invasive laser spectroscopy. This thesis is specifically dealing with simulations of light transport through the upper body of infants, as well as constructing a tissue-like model (phantom) that can be used in experiments. LÄS MER