• Comparison of contrast in brightness mode and strain ultrasonography of glial brain tumours 

      Selbekk, Tormod; Brekken, Reidar; Indergaard, Marit Kristina; Solheim, Ole; Unsgård, Geirmund (Journal article; Peer reviewed, 2012)
      Background Image contrast between normal tissue and brain tumours may sometimes appear to be low in intraoperative ultrasound. Ultrasound imaging of strain is an image modality that has been recently explored for ...
    • Efficiency of ultrasound training simulators: Method for assessing image realism 

      Bø, Lars Eirik; Gjerald, Sjur Urdson; Brekken, Reidar; Hernes, Toril A. Nagelhus; Tangen, Geir Arne (Journal article; Peer reviewed, 2010)
      Although ultrasound has become an important imaging modality within several medical professions, the benefit of ultrasound depends to some degree on the skills of the person operating the probe and interpreting the image. ...
    • Investigation of Methods for 2D Strain Imaging of Brain Tumors 

      Kvåle, Kaja Frøysaa (Master thesis, 2014)
      Intraoperative ultrasound strain imaging displays brain tissue stiffness rather than difference in mass density as regular B-mode imaging. A glioma (the most common type of brain tumor) has a tendency of infiltrating ...
    • Manually steerable catheter with improved agility 

      Tangen, Geir Arne; Manstad-Hulaas, Frode; Nypan, Erik; Brekken, Reidar (Journal article; Peer reviewed, 2018)
      Purpose: A prototype steerable catheter was designed for endovascular procedures. This technical pilot study reports the initial experience using the catheter for cannulation of visceral arteries. Technique: The 7F ...
    • Patency of arteriovenous haemodialysis fistulas: drug-eluting versus plain balloon angioplasty 

      Haave, Tina Reppe (Master thesis, 2016)
      Purpose: To assess the patencies of radiocephalic arteriovenous (AV) haemodialysis fistulas following drug-eluting balloon (DEB) angioplasty compared with plain balloon (PB) angioplasty. Methods: This retrospective ...
    • Real time ultrasound simulation: Application to a medical training simulator 

      Bø, Lars Eirik (Master thesis, 2008)
      As ultrasound technology today finds new applications and becomes available to more and more users, the demand for good training procedures and material increases. This has motivated a research project aimed at developing ...
    • Ultrasound-based Estimation of Strain in Abdominal Aortic Aneurysm 

      Brekken, Reidar (Doktoravhandlinger ved NTNU, 1503-8181; 2012:369, Doctoral thesis, 2012)
      Abdominal aortic aneurysm (AAA) is a vascular disease resulting in a permanent local dilatation of the abdominal aorta. Different studies estimate the prevalence of AAA to 1.3-8.9% of men and 1.0-2.2% of women over 60 years ...