Search for dissertations about: "laser Doppler perfusion scanning"

Found 3 swedish dissertations containing the words laser Doppler perfusion scanning.

  2. 1. Laser Doppler Flowmetry and Imaging: Methodological Studies

    Author : Siv Bornmyr; Malmö Institutionen för kliniska vetenskaper; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Clinical physics; digital photography.; cold intolerance; sympathetic nervous system; flow cessation external pressure; skin temperature; thermography; skin blood flow; laser doppler imaging; Laser doppler flowmetry; radiology; tomography; medical instrumentation; Klinisk fysiologi; radiologi; tomografi; medicinsk instrumentering;

    Abstract : Laser Doppler flowmetry (LDF) and laser Doppler imaging (LDI) are modern methods for non-invasive and continuous assessment of skin blood flow. The techniques are based on the phenomenon that monochromatic light transilluminating a perfused tissue is spectrally broadened owing to scattering by moving blood cells. READ MORE

  4. 2. 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

  5. 3. Laser Doppler imaging of patch tests : a methodological and comparative study with visual assessments

    Author : Bolli Bjarnason; Karolinska Institutet; Karolinska Institutet; []
    Keywords : skin perfusion; laser Doppler perfusion imaging; laser Doppler perfusion scanning; contact dermatitis; patch test technique; test procedure; test method; test system; patch test optimization; serial dilution; dose; exposure time; application time; reading time; immunosuppression; pigmented patch test materials; edge effect; nickel; isothiazolinones; corticosteroids; budesonide; neomycin; balsam of Peru;

    Abstract : Optimal test technique for most allergens is lacking. Despite technological progress in the 20th century, patch tests are habitually still assessed visually. Morphology of definite positive patch tests is unknown, reflected by various reading scales available and false-positive tests. READ MORE