Sökning: "Diffuse reflectance spectroscopy"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden Diffuse reflectance spectroscopy.

1. 1. Diffuse Reflectance Spectroscopy: Using a Monte Carlo method to determine chromophore compositions of tissue

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

   Författare :Lisa Kobayashi Frisk; [2016]
   Nyckelord :Photonics; Biophotonics; Diffuse Reflectance; Spectroscopy; Monte Carlo; Diffusion; Physics and Astronomy;

   Sammanfattning : In this work, inverse diffusion equation and Monte Carlo methods are used in conjunction with diffuse reflectance spectroscopy to develop a protocol for evaluating the chromophore compositions of tissue mimicking liquid phantoms. A novel two spectrometer system is used which provides real time calibration of any intensity fluctuations of the light source. LÄS MER

3. 2. Diffuse Reflectance Spectroscopy: Using Multivariate analysis method for determination of tissue optical properties

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

   Författare :Hasti Yavari; [2016]
   Nyckelord :Diffuse reflectance spectroscopy; Multivariate analysis; Least-squares support vector machines; Physics and Astronomy;

   Sammanfattning : Diffuse reflectance Spectroscopy is a non-invasive and real-time technique used both in research and clinical studies for purposes such as identifying tumors and monitoring their response to therapy. Here, a compact, cost-effective and portable experimental setup is used in order to acquire the diffuse reflectance spectra from tissue-like liquid phantoms. LÄS MER

4. 3. Look-up table based Monte Carlo inverse model as a tool to discover liver tumors

   Kandidat-uppsats, Lunds universitet/Fysiska institutionen

   Författare :Alexandra Andersson; [2015]
   Nyckelord :tumour; Diffuse reflectance spectroscopy; Look-up table; Forward model; Inverse model; Monte Carlo; liver; Physics and Astronomy;

   Sammanfattning : Diffuse reflectance spectroscopy is a method that allows investigation of the chromophore composition of tissue. The objective is to explore if the composition can be used to determine whether the tissue is healthy or not. The measured diffuse reflectance is often modelled by a diffusion model. LÄS MER

5. 4. Time of Flight Spectroscopy of Photon Migration in Turbid Media

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

   Författare :Johanna Paulsson; [2014]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : Light interacting with biological matter is dominated by light scattering; biological matter is turbid. In order not to harm the natural structure of biological matter, visible light can be used to investigate it, and to avoid the light being absorbed from e.g. LÄS MER

7. 5. Diffuse reflectance spectroscopy as a tool to evaluate liver tissue

   Master-uppsats, Lunds universitet/Matematisk fysik; Lunds universitet/Atomfysik

   Författare :Therese Alburg; David Kraus; [2014]
   Nyckelord :diffuse reflectance spectroscopy; drs; biophotonics; medical optics; diffusion; tissue evaluation; Technology and Engineering;

   Sammanfattning : The shape of a diffuse reflectance spectra can provide knowledge about tissue composition. By analysing this spectra one can, with the right evaluation methods, find out information about the tissue. LÄS MER