• AIDS-related primary central nervous system lymphoma: a Norwegian national survey 1989–2003 

      Haldorsen, Ingfrid S.; Kråkenes, Jostein; Goplen, Anne Kristin; Dunlop, Oona; Mella, Olav; Espeland, Ansgar (Peer reviewed; Journal article, 2008-08-06)
      Background: Primary central nervous system lymphoma (PCNSL) is a frequent complication in acquired immunodeficiency syndrome (AIDS). The objective of this survey was to investigate incidence, clinical features, radiological ...
    • Are MRI high-signal changes of alar and transverse ligaments in acute whiplash injury related to outcome? 

      Vetti, Nils; Kråkenes, Jostein; Eide, Geir Egil; Rørvik, Jarle; Gilhus, Nils Erik; Espeland, Ansgar (Peer reviewed; Journal article, 2010-11-11)
      Background: Upper neck ligament high-signal changes on magnetic resonance imaging (MRI) have been found in patients with whiplash-associated disorders (WAD) but also in non-injured controls. The clinical relevance of such ...
    • Are two readers more reliable than one? A study of upper neck ligament scoring on magnetic resonance images 

      Espeland, Ansgar; Vetti, Nils; Kråkenes, Jostein (Peer reviewed; Journal article, 2013-01-17)
      Background: Magnetic resonance imaging (MRI) studies typically employ either a single expert or multiple readers in collaboration to evaluate (read) the image results. However, no study has examined whether evaluations ...
    • Continuous Local Intra-Arterial Nimodipine for the Treatment of Cerebral Vasospasm 

      Logallo, Nicola; Bøthun, Marianne Lundervik; Guttormsen, Anne Berit; Holmaas, Gunhild; Kråkenes, Jostein; Thomassen, Lars; Svendsen, Frode; Helland, Christian Andre (Peer reviewed; Journal article, 2015)
      Vasospasm (VSP) is one of the major causes for prolonged neurologic deficit in patients with aneurysmal subarachnoid hemorrhage. Few case series have reported about continuous local intra-arterial nimodipine administration ...
    • Magnetic resonance imaging of craniovertebral structures: clinical significance in cervicogenic headaches 

      Knackstedt, Heidi; Kråkenes, Jostein; Bansevicius, Dalius; Russell, Michael Bjørn (Peer reviewed; Journal article, 2011-09-27)
      This paper aims to investigate the relevance of morphological changes in the main stabilizing structures of the craniocervical junction in persons with cervicogenic headache (CEH). A case control study of 46 consecutive ...
    • The Norwegian Stroke in the Young Study (NOR-SYS): rationale and design 

      Fromm, Annette; Thomassen, Lars; Næss, Halvor; Meijer, Rudy; Eide, Geir Egil; Kråkenes, Jostein; Vedeler, Christian A.; Gerdts, Eva; Larsen, Terje H.; Kuiper, Karel Kier-Jan; Laxdal, Elin Hanna; Russell, David; Tatlisumak, Turgut; Waje-Andreassen, Ulrike (Peer reviewed; Journal article, 2013-07-17)
      Background: Ischemic stroke in young adults is a major health problem being associated with a higher vascular morbidity and mortality compared to controls, and a stroke recurrence rate of 25% during the first decade. The ...
    • Post-PET ultrasound improves specificity of 18F-FDG-PET for recurrent differentiated thyroid cancer while maintaining sensitivity 

      Biermann, Martin; Kråkenes, Jostein; Brauckhoff, Katrin; Haugland, Hans Kristian; Akslen, Lars A.; Heinecke, A.; Varhaug, Jan Erik; Brauckhoff, Michael (Peer reviewed; Journal article, 2015-03-13)
      Background: Positron emission tomography (PET) using fluor-18-deoxyglucose (18F-FDG) with or without computed tomography (CT) is generally accepted as the most sensitive imaging modality for diagnosing recurrent differentiated ...