Sökning: "radiographic measurements"

Visar resultat 16 - 20 av 37 avhandlingar innehållade orden radiographic measurements.

  1. 16. The Soft Tissues in Osteoarthritis and Arthroplasty of the Hip

    Författare :Sarunas Tarasevicius; Lund Ortopedi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; total hip replacement; intracapsular pressure; Osteoarthritis; sonography;

    Sammanfattning : Ultrasonography as a tool measuring the anterior capsular distance in THA was so far not described nor validated. Comparing the measurements of the capsular distance set with a caliper/ruler with those performed with ultrasonography on a THA model demonstrated a high correlation between measurements. LÄS MER

  3. 17. Regeneration in periodontal and endosseous implant treatment

    Författare :Lisa Mayfield; Lunds universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Odontology; guided tissue regeneration; Pressure sensitive periodontal probe; intraosseous defects; guided bone regeneration; EDTA root surface conditioning; bioabsorbable membrane; stomatology; Odontologi;

    Sammanfattning : In a series of clinical studies regenerative procedures for periodontal disease treatment were evaluated. A reproducibility study of probing measurements using a manual periodontal probe and 3 pressure-sensitive probes showed that measurements obtained using the manual probe were the most repeatable. LÄS MER

  4. 18. Physical and psychophysical properties of digital intraoral radiography

    Författare :Harry Charalabos Stamatakis; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Objectives: This thesis aimed to the evaluation of different digital intraoral radiographic systems, partly by defining objective measures of their physical properties, namely their resolution, signal and noise characteristics, and partly by employing methods to measure their psychophysical properties including viewer performance, such as the Perceptibility Curve test. In a next step, a mathematical model was developed to predict Perceptibility Curves without employing viewers. LÄS MER

  5. 19. A new computed tomography method for evaluation of orthopedic implants : applied to the acetabular cup

    Författare :Lotta Olivecrona; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Background: Two major long term complications after total hip arthroplasty (THA) is aseptic loosening and wear of the implant. In the clinical situation a detection level of approximately 1 mm is desirable. However, conventional planar radiographs used in clinical routine cannot reach this level. LÄS MER

  7. 20. Wear and Loosening in Cemented Hip Arthroplasty

    Författare :Uldis Kesteris; Lund Ortopedi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; ortopedi; Kirurgi; traumatology; orthopaedics; Surgery; traumatologi;

    Sammanfattning : The mechanisms of loosening in total hip arthroplasty (THA) and the role of polyethylene (PE) wear debris in this process is unclear. Radiographic measurements showed that THA with 32 mm heads have about 3 times greater volumetric wear than those with 22 mm heads. LÄS MER