• 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; 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 ...
    • Amongst Norwegian paediatricians there is little agreement in management of cases of suspected child maltreatment 

      Vollmer-Sandholm, Mary Jo; Myhre, Arne Kristian; Otterman, Gabriel; Lydersen, Stian; Stray-Pedersen, Arne (Peer reviewed; Journal article, 2021)
      Aim Child maltreatment is not unusual in our society but little is known about the medical management of cases in the Nordic countries. This study investigated physician knowledge and practice in cases of suspected physical ...
    • 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; 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 ...
    • How different iterative and filtered back projection kernels affect CT numbers and low contrast detectability 

      Volgyes, David; Pedersen, Marius; Stray-Pedersen, Arne; Waaler, Dag; Martinsen, Anne Catrine Trægde (Journal article; Peer reviewed, 2016)
      Objective: The aim of this study was to evaluate how different iterative and filtered back projection kernels affect the computed tomography (CT) numbers and low contrast detectability. Methods: Five different scans ...
    • Image De-Quantization Using Plate Bending Model 

      Völgyes, David; Martinsen, Anne Catrine Trægde; Stray-Pedersen, Arne; Waaler, Dag; Pedersen, Marius (Journal article; 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 quality in forensic CT imaging 

      Völgyes, David (Doctoral theses at NTNU;2018:294, Doctoral thesis, 2018)
      What factors affect the diagnostic image quality in forensic computed tomography (CT) imaging? In this thesis I briefly present the main steps from CT scanning to diagnostics. The thesis is built on four core papers. The ...
    • Vaccine Induced Immune Thrombotic Thrombocytopenia Causing a Severe Form of Cerebral Venous Thrombosis With High Fatality Rate: A Case Series 

      Wiedmann, Markus; Skattør, Thor Håkon; Stray-Pedersen, Arne; Romundstad, Luis Georg; Antal, Ellen-Ann; Marthinsen, Pål Bache; Sørvoll, Ingvild Hausberg; Ernstsen, Siw Leiknes; Lund, Christian G.; Holme, Pål Andre; Johansen, Tonje Okkenhaug; Brunborg, Cathrine; Aamodt, Anne Hege; Schultz, Nina Haagenrud; Skagen, Karolina Ryeng; Skjelland, Mona Elisabeth (Peer reviewed; Journal article, 2021)
      During a 2-week period, we have encountered five cases presenting with the combination of cerebral venous thrombosis (CVT), intracerebral hemorrhage and thrombocytopenia. A clinical hallmark was the rapid and severe ...