Search for dissertations about: "laser-Doppler flowmetry"

Showing result 6 - 10 of 79 swedish dissertations containing the words laser-Doppler flowmetry.

  2. 6. Sampling depth in Laser Doppler flowmetry

    Author : Anneli Jakobsson; Linköpings universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : The influence of probe design on the measuring depth in laser Doppler flowmetry using a 632.8 nm light source has been investigated by in vivo models and Monte Carlo simulations. Five different probe configurations were used to measure perfusion in feline intestine to which a constant blood flow was applied. READ MORE

  4. 7. Influence of optical properties on Laser Doppler Flowmetry

    Author : Marcus Larsson; Stefan Andersson-Engels; Linköpings universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : Laser Doppler flowmetry (LDF) is based on the principle that a Doppler shift occurs when coherent light is scattered by a moving object, i.e. red blood cell (RBC). The magnitude of these frequency shifts affects the optical beating that occurs w hen shifted and non-shifted light is mixed. READ MORE

  5. 8. Movement artifact reduction in laser Doppler blood flowmetry : myocardial perfusion applications

    Author : MG Daniel Karlsson; Karin Wårdell; Knut Kvernebo; Linköpings universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : Laser Doppler perfusion monitoring (LDPM) and imaging (LDPI) enable assessment of tissue microvascular perfusion. The techniques are based on the Doppler broadening of the optical spectrum occurring when coherent laser light is scattered by moving red blood cells (RBC). READ MORE

  6. 9. Evaluation of a Laser Doppler System for Myocardial Perfusion Monitoring

    Author : Carina Fors; Karin Wårdell; Henrik Casimir Ahn; Maria Lindén; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Laser Doppler perfusion monitoring; myocardial microcirculation; coronary artery bypass graft; Medical engineering; Medicinsk teknik;

    Abstract : Coronary artery bypass graft (CABG) surgery is a common treatment for patients with coronary artery disease. A potential complication of CABG is myocardial ischemia or infarction. In this thesis, a method - based on laser Doppler flowmetry (LDF) - for detection of intra- and postoperative ischemia by myocardial perfusion monitoring is evaluated. READ MORE

  7. 10. Origin and processing of laser Doppler spectra

    Author : Mikael Arildsson; Linköpings universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : Laser Doppler Flowmetry (LDF) is a technique for studying microvascular blood flow. Laser light is guided to the tissue and the backscattered light, after being Doppler shifted by moving Red Blood Cells (RBCs), is detected using a heterodyne process. READ MORE