Browsing Det matematisk-naturvitenskapelige fakultet by Author "Waaler, Dag"

Now showing items 1-4 of 4

  • Applicability of a clinical cardiac CT protocol in post mortem studies 
    Völgyes, David; Pedersen, Marius; Stray-Pedersen, Arne; Waaler, Dag; Martinsen, Anne Catrine Trægde (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
    Objective: Confirmation whether an optimized clinical cardiac CT scan protocol is also optimal for post mortem cardiac CT scans without iodine contrast or the reconstruction parameters should be changed. Materials and ...
  • Image De-Quantization Using Plate Bending Model 
    Völgyes, David; Martinsen, Anne Catrine Trægde; Stray-Pedersen, Arne; Waaler, Dag; Pedersen, Marius (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Discretized image signals might have a lower dynamic range than the display. Because of this, false contours might appear when the image has the same pixel value for a larger region and the distance between pixel levels ...
  • Image texture and radiation dose properties in CT 
    Możejko, Dawid; Andersen, Hilde Kjernlie; Pedersen, Marius; Waaler, Dag; Martinsen, Anne Catrine Trægde (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    The aim of this study was to compare image noise properties of GE Discovery HD 750 and Toshiba Aquilion ONE. The uniformity section of a Catphan 600 image quality assurance phantom was scanned with both scanners, at different ...
  • A Weighted Histogram-Based Tone Mapping Algorithm for CT images 
    Völgyes, David; Martinsen, Anne Catrine Trægde; Stray-Pedersen, Arne; Waaler, Dag; Pedersen, Marius (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Computed Tomography (CT) images have a high dynamic range, which makes visualization challenging. Histogram equalization methods either use spatially invariant weights or limited kernel size due to the complexity of pairwise ...