Sökning: "observer variation"

Visar resultat 1 - 5 av 30 avhandlingar innehållade orden observer variation.

  1. 1. Ultrasound measurement of cervical length in the second trimester of pregnancy for prediction of preterm delivery

    Detta är en avhandling från Göteborgs universitet

    Författare :Pihla Kuusela; Göteborgs universitet.; Gothenburg University.; [2019]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; preterm delivery; transvaginal ultrasound; cervical length measurement; second trimester; prospective study; observational study; mass screening; reproducibility of results; inter-observer variation; intra-observer variation; data accuracy; quality control;

    Sammanfattning : Abstract Background: Short cervical length is a risk factor for preterm delivery (PTD) and screening of cervical length using transvaginal ultrasound in the second trimester is a proposed method to find women at risk Aims: To examine the potential value of routine measurement of cervical length in a Swedish population of women with singleton pregnancies in the prediction of PTD. To estimate inter- and intra-observer agreement and reliability of cervical length measurements. LÄS MER

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

    Detta är en avhandling från Göteborgs universitet

    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

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

    Detta är en avhandling från Göteborgs universitet

    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

  4. 4. Degenerative changes of the human temporomandibular joint : A radiological, microscopical, histomorphometrical and biochemical study

    Detta är en avhandling från Stockholm : Swedish Dental Journal

    Författare :Lennart Flygare; Göran Isacsson; [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 : In five autopsy specimen studies human temporomandibular joints were investigated by conventional tomography, macroscopy, and microscopy for degenerative changes, in particular erosive hard-tissue changes.In the microscopical evaluation special attention was paid to the calcified cartilage. LÄS MER

  5. 5. 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; [1997]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Temporomandibular Joint Diseases; Synovial Fluid; Proteoglycans; Osteoarthritis; Observer variation; Microscopy; Bone density; Diagnostic properties; Image processing; Tomography; X-ray; Odontology; stomatology; Odontologi;

    Sammanfattning : In five autopsy specimen studies human temporomandibular joints were investigated by conventional tomography, macroscopy, and microscopy for degenerative changes, in particular erosive hard-tissue changes.In the microscopical evaluation special attention was paid to the calcified cartilage. LÄS MER