Search for dissertations about: "Digital radiography"

Showing result 1 - 5 of 29 swedish dissertations containing the words Digital radiography.

  1. 1. Orthopaedic measurements with computed radiography. Methodological development, accuracy, and radiation dose with special reference to the weight-bearing lower extremity and the dislocating patella

    University dissertation from Röntgenavdelningen, Lasarettet, 271 82 Ystad, Sweden

    Author : Jan Sanfridsson; Lund University.; Lunds universitet.; [2001]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Clinical physics; digital.; computer-assisted; Picture Archiving and Communication Systems; computed radiography; radiography; effective dose; radiation dosage; measurements; biomechanics; dislocating patella; musculoskeletal; patellofemoral joint; Knee joint; radiology; tomography; medical instrumentation; Klinisk fysiologi; radiologi; tomografi; medicinsk instrumentering;

    Abstract : The overall aim of this study was to develop and evaluate a measurement system for computed radiography (CR) and Picture Archiving and Communication Systems (PACS), permitting measurements of long distances and angles in and between related images. The developed measurement system, which was based on the QUESTOR Precision Radiography (QPR) system, was applied to the weight-bearing knee with special reference to the dislocating patella. READ MORE

  2. 2. Studies on the use of digital radiography for the assessment of periapical bone lesions

    University dissertation from Department of Oral Surgery and Oral Medicine, Faculty of Odontology, Carl Gustafs väg 34, SE-214 21 Malmö, Sweden

    Author : Boel Kullendorff; Lund University.; Lunds universitet.; [1996]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; subtraction radiography; image processing; Digital radiography; dental radiography; Odontology; stomatology; Odontologi;

    Abstract : The aim was to study digital radiography and to evaluate the influence of image processing on digital dental radiographs for the assessment of periapical lesions. In four studies, artificial bone lesions were made periapically and interradicularly in the mandibular premolar and molar regions. READ MORE

  3. 3. Quality Aspects of Digital Radiography in General Dental Practice

    University dissertation from Malmö University

    Author : Kristina Hellén-Halme; Malmö University.; [2007]
    Keywords : ODONTOLOGY Radiological research; ODONTOLOGI Radiologisk forskning; Medicine; Digital radiography;

    Abstract : ABSTRACT The number of dentists who have converted from conventional film radiography to digital radiography continues to grow. A digital system has numerous advantages, but there are also many new aspects to consider. The overall aim of this thesis was to study how digital radiography was used in general dental practices. READ MORE

  4. 4. Digital and Computed Musculoskeletal Radiography. A study on spatial resolution, diagnostic accuracy, image quality and radiation dose

    University dissertation from Dept. of Diagnostic Radiology, Reykjavik City Hospital, 108 Reykjavik, Iceland

    Author : Ásbjörn Jónsson; [1996]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Clinical physics; Radiation Dosage.; Hip; Hand; Fractures; Scoliosis; Hyperparathyroidism; Rheumatoid; Arthritis; ROC Analysis; Computer-Assisted Image Processing; Musculoskeletal; Digital Radiography; radiology; tomography; medical instrumentation; Klinisk fysiologi; radiologi; tomografi; medicinsk instrumentering;

    Abstract : The aims of the study were to investigate the applications of digital radiography to musculoskeletal radiology. In the first part of the research, the diagnostic accuracy of digital images as compared to film-screen radiographs was studied and the spatial resolution requirements evaluated. READ MORE

  5. 5. Physical and psychophysical properties of digital intraoral radiography

    University dissertation from Stockholm : Karolinska Institutet, -

    Author : Harry Charalabos Stamatakis; Karolinska Institutet.; Karolinska Institutet.; [1999]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : 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. READ MORE