Sökning: "observer variation"

Visar resultat 1 - 5 av 27 avhandlingar innehållade orden observer variation.

  1. 1. Optimization of paediatric CT examinations - An approach to minimize absorbed dose to patients with regard to image quality and observer variability

    Författare :Kerstin Ledenius; Göteborgs universitet.; Gothenburg University.; [2011]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Computed Tomography; Paediatrics; Radiation Dosage; Computer Simulations; Nonparametric Statistics; Observer Variation; Radiographic Image Enhancement;

    Sammanfattning : The absorbed dose to paediatric patients is important bearing in mind the increased risk of radiation-induced cancer due to exposure to X-rays at young ages. Questions have also been raised of whether a CT examination of the paediatric brain might lead to a reduction in cognitive function. LÄS MER

  2. 2. Radiographic follow-up analysis of Br?nemark? dental implants

    Författare :Solweig Sundén Pikner; Göteborgs universitet.; Gothenburg University.; [2008]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cluster effect; Dental implants; Dependency; Diagnostic accuracy; Long-term follow-up; Marginal bone level; Observer variation; Osseointegration; Prediction;

    Sammanfattning : Radiography plays an important role in clinical routine practice and in research projects evaluating dental implants, among them Br?nemark? System. Presence of a peri-implant radiolucency has been used in studies as a criterion for implant failure without knowledge of its diagnostic accuracy. LÄS MER

  3. 3. DEGENERATIVE CHANGES OF THE HUMAN TEMPOROMANDIBULAR JOINT: A radiological, microscopical, histomorphometrical and biochemical study

    Detta är en avhandling från Swedish Dental Journal

    Författare :Lennart Flygare; Lund University.; Lunds universitet.; [1997]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Synovial Fluid; Temporomandibular Joint Diseases; Proteoglycans; Osteoarthritis; Observer variation; Microscopy; Bone density; Diagnostic properties; Image processing; Tomography; X-ray; Odontology; stomatology; Odontologi;

    Sammanfattning : Popular Abstract in Swedish I fem autopsistudier undersöktes humana käkledspreparat med tomografi (skiktröntgen), makroskopiskt (inspektion) och mikroskopiskt för förekomst av degenerativa (nedbrytande) förändringar. Speciellt undersöktes förekomst av erosiva förändringar i benet samt förändringar i den förkalkade broskzonen (skiktet mellan mjukbrosk och ben). LÄS MER

  4. 4. Imaging of hip trauma - occult, suspect and concomitant fractures

    Detta är en avhandling från Göteborg : University of Gothenburg

    Författare :David Collin; Göteborgs universitet.; Gothenburg University.; [2016]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Hip fractures; Occult; Pelvic; Radiography; Computed tomography; Magnetic resonance imaging; Observer variation;

    Sammanfattning : Background: Between one and nine percent of all hip fractures are occult or suspect and further examinations with computed tomography (CT) and/or magnetic resonance imaging (MRI) are vital for further handling. Statistically robust conclusions have not been previously reported. LÄS MER

  5. 5. Incidentally detected adrenal lesions - radiological aspects

    Detta är en avhandling från Göteborg : University of Gothenburg

    Författare :Lilian Hammarstedt; Göteborgs universitet.; Gothenburg University.; [2011]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Incidental finding; Adrenal incidentaloma; Adrenal Gland Neoplasm; Computed Tomography; Magnetic Resonance Imaging; Follow-up Studies; Oncology; Observer variation; Phantom Studies;

    Sammanfattning : Incidentally detected adrenal lesions (“adrenal incidentalomas”) have become a growing clinical problem due to increased and refined radiology methods. Autopsy studies show frequencies as high as 7-8% in the elderly. A large part of such lesions give no health problems but some can be related to hormone overproduction or malignant disease. LÄS MER