Search for dissertations about: "radiograph"

Showing result 1 - 5 of 18 swedish dissertations containing the word radiograph.

  2. 1. Evaluation of methods of measuring wear of polyethylene acetabular components intotal hip arthroplasty

    Author : Charles R Bragdon; Göteborgs universitet; []
    Keywords : Total hip replacement; polyethylene; wear; radiostereometric analysis; radiograph;

    Abstract : Background: The introduction of highly cross-linked, wear resistant polyethylene acetabularcomponents for clinical use in total hip replacements has intensified the interest in and need for highlyaccurate methods of measuring wear from clinical radiographs. There are several methods currentlyavailable for measuring the relative displacement of the femoral head into the acetabular componentresulting from the combination of plastic deformation and wear of the polyethylene bearing surface. READ MORE

  4. 2. On the use of radiography and radiation dose consideration in orthodontic treatment

    Author : Christina Stervik; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; effective dose; errors; estimated risk; intra-oral radiograph; organ dose; orthodontic treatment; orthodontists; panoramic image; questionnaires; radiation doses;

    Abstract : The aims of this thesis were to analyse the use of radiography and radiation risk associated with orthodontic treatment. Study I measured absorbed doses to radiosensitive organs in the head and neck in an anthropomorphic phantom head using thermo¬luminescent dosimeters (TLDs) from digital intra-oral and panoramic radiography. READ MORE

  5. 3. Visual linearization of image data for the display of digital intraoral radiographs

    Author : Gang Li; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Digital intraoral radiography has developed rapidly during the past decade. The most important advantage of this technique is that it breaks the fixed relationship between exposure and density that is inherent in film radiography. Thus, processing of digital intraoral radiographs after image capturing has become possible. READ MORE

  6. 4. The measurement of compression wood and other wood features and the prediction of their impact on wood products

    Author : Micael Öhman; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Träteknik; Wood Technology;

    Abstract : Wood is a complex and highly variable biological material formed to give the tree best possible conditions for sustaining life. Thus every piece of wood is possessed of unique qualities. READ MORE

  7. 5. Open vs closed exposure of palatally displaced canines : clinical, patient-related outcomes and health economics

    Author : Margitha Björksved; Farhan Bazargani; Rune Lindsten; Kristina Arnrup; Jonathan Sandler; Örebro universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : The maxillary permanent canine usually erupts in the mouth between the ages of 11 and 12 years. Sometimes the canines are displaced toward the palatal side of the dental arch and eruption is disturbed. Palatally displaced canines (PDCs) are a frequent dental anomaly, present in 2% of the young population. READ MORE