Leif Østergaard

  1. 2009
  2. Published

    Feasibility and logistics of MRI before thrombolytic treatment. / Sølling, C; Ashkanian, M; Hjort, N; Gyldensted, C; Andersen, Grethe; Østergaard, Leif.

    In: Acta Neurologica Scandinavica, Vol. 120, No. 3, 2009, p. 143-9.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  3. Published

    Integration of diagnostic studies in amyotrophic lateral sclerosis. / Furtula, Jasna; Fuglsang-Frederiksen, Anders; Johnsen, Birger; Pugdahl, Kirsten; Christensen, Peter Brøgger; Østergaard, Leif; Sunde, Niels; Lamm, Trine Tandrup; Finnerup, Nanna Brix.

    2009. Poster session presented at PhD Day 2009, The Faculty of Health Sciences, University of Aarhus, Denmark, Aarhus, Denmark.

    Research output: Contribution to conferencePosterResearch

  4. Published

    Predicting Tissue Outcome From Acute Stroke Magnetic Resonance Imaging : Improving Model Performance by Optimal Sampling of Training Data. / Jonsdottir, Kristjana Yr; Østergaard, Leif; Mouridsen, Kim.

    In: Stroke, Vol. 40, 2009, p. 3006-11.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  5. Published

    Predicting tissue outcome in stroke: New approaches. / Østergaard, Leif; Jonsdottir, Kristjana Yr; Mouridsen, Kim.

    In: Current Opinion in Neurology, Vol. 22, No. 1, 2009, p. 54-59.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  6. Published

    Predictive coding of music : Brain responses to rhythmic incongruity. / Vuust, Peter; Østergaard, Leif; Pallesen, Karen Johanne; Bailey, Christopher; Roepstorff, Andreas.

    In: Cortex, Vol. 45, No. 1, 2009, p. 80-92.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  7. Published

    Presymptomatic generalized brain atrophy in frontotemporal dementia caused by CHMP2B mutation. / Rohrer, Jonathan D; Ahsan, R Laila; Isaacs, Adrian M; Nielsen, Jorgen E; Østergaard, Leif; Scahill, Rachael; Warren, Jason D; Rossor, Martin N; Fox, Nick C; Johannsen, Peter; FReJA consortium.

    In: Dementia and Geriatric Cognitive Disorders, Vol. 27, No. 2, 2009, p. 182-6.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  8. Published

    Påvirkning af hjernen hos patienter med kronisk smitsom leverbetændelse vurderet ved MR-skanning. / Hjerrild, Simon; Renvillard, Signe Groth; Østergaard, Leif; Leutscher, Peter; Videbech, Poul.

    2009. Poster session presented at Psykiatriens Forskningsdag 2009, Århus, Denmark.

    Research output: Contribution to conferencePosterResearch

  9. Published

    Quantitative t2 values predict time from symptom onset in acute stroke patients. / Siemonsen, Susanne; Mouridsen, Kim; Holst, Brigitte; Ries, Thorsten; Finsterbusch, Jürgen; Thomalla, Götz; Østergaard, Leif; Fiehler, Jens.

    In: Stroke, Vol. 40, No. 5, 2009, p. 1612-6.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  10. Published

    Safety and efficacy of MRI-based Selection for rtPA Treatment : Responder Analysis of Outcome in the 3 Hour Time Window. / Sølling, Christine; Hjort, Niels; Ashkanian, Mahmoud; Østergaard, Leif; Andersen, Grethe.

    In: Cerebrovascular Diseases, Vol. 27, No. 3, 2009, p. 223-229.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  11. Published

    Size-Dependent Accumulation of PEGylated Silane-Coated Magnetic Iron Oxide Nanoparticles in Murine Tumors. / Larsen, Esben Kjær Unmack; Nielsen, Thomas; Wittenborn, Thomas; Birkedal, Henrik; Vorup-Jensen, Thomas; Jakobsen, Mogens H; Østergaard, Leif; Horsman, Michael R; Besenbacher, Flemming; Howard, Kenneth A; Kjems, Jørgen.

    In: A C S Nano, Vol. 3, No. 7, 2009, p. 1947-51.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  12. Published

    The frontal ERAN and temporal MMN: Two different brain responses to violations in chord progressions. / Garza Villarreal, Eduardo A.; Brattico, Elvira; Leino, Sakari; Østergaard, Leif; Vuust, Peter.

    2009. Poster session presented at Braintuning Workshop 2009, Helsinki, Finland.

    Research output: Contribution to conferencePosterResearch

  13. Published

    Total mismatch: negative diffusion-weighted imaging but extensive perfusion defect in acute stroke. / Cho, Tae-Hee; Hermier, Marc; Alawneh, Josef A; Ritzenthaler, Thomas; Desestret, Virginie; Østergaard, Leif; Derex, Laurent; Baron, Jean-Claude; Nighoghossian, Norbert.

    In: Stroke; a journal of cerebral circulation, Vol. 40, No. 10, 2009, p. 3400-2.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  14. Published

    Upgraded acute stroke care including thrombolysis is associated with reduced length of hospital stay among non-stroke patients. / Sølling, Christine; Johnsen, Søren Påske; Ehlers, Lars; Østergaard, Leif; Andersen, Grethe.

    In: Cerebrovascular Diseases, Vol. 27, No. 1, 2009, p. 60-6.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  15. Published

    White matter lesions and cerebral perfusion imaging in late-onset major depression. / Dalby, Rikke Beese; Madsen, Jamila Ahdidan; Chakravarty, MM; Sørensen, L; Rosenberg, Raben; Østergaard, Leif; Videbech, Poul.

    2009. Poster session presented at ISMRM 17th Scientific Meeting & Exhibition, Honolulu, United States.

    Research output: Contribution to conferencePosterResearchpeer-review

  16. 2008
  17. Published

    A Whole-brain Protocol for Measuring Cerebral Hemodynamic Reactivity using MRI without Contrast Agents. / Donahue, Manus; Blicher, Jakob; MacIntosh, Brad; Østergaard, Leif; Feinberg, David; Jezzard, Peter.

    2008. Poster session presented at Gordon Research Conference on Brain Energy Metabolism & Blood Flow, United States.

    Research output: Contribution to conferencePosterResearch

  18. Published

    Accessing the mental space - Spatial working memory processes for language and vision overlap in precuneus. / Wallentin, Mikkel; Weed, Ethan; Østergaard, Leif; Mouridsen, Kim; Roepstorff, Andreas.

    In: Human Brain Mapping, Vol. 29, No. 4, 2008, p. 524-532.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  19. Published

    Acute stroke imaging research roadmap. / Wintermark, Max; Albers, Gregory W.; Alexandrov, Alexandrei V.; Alger, Jeffrey R.; Bammer, Roland; Baron, Jean-Claude; Davis, Steven; Damaerschack, Bart; Derdeyn, Colin P.; Donnan, Geoffrey A.; Eastwood, James D.; Fiebach, Jochen B.; Fisher, Marc; Furie, Karen L.; Goldmakher, Gregory W.; Hacke, Werner; Kidwell, Chelsea C.; Kloska, Stephen P.; Köhrman, Martin; Koroshetz, Walter; Lee, Ting-Yim; Lees, Kennedy R; Lev, Michael H.; Liebeskind, David S.; Østergaard, Leif; Powers, William J.; Provenzale, James; Schellinger, Peter; Silbergleit, Robert; Sorensen, Alma Gregory; Wardlaw, Joanna; Wu, Ona; Warach, Steven.

    In: American Journal of Neuroradiology, Vol. 29, No. 5, 2008, p. e23-e30.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  20. Published

    Acute stroke imaging research roadmap. / Wintermark, Max; Albers, Gregory W.; Alexandrov, Alexandrei V.; Alger, Jeffrey W.; Bammer, Roland; Baron, Jean-Claude; Davis, Steven; Demaerschalk, Bart; Derdeyn, Colin P.; Donnan, Geoffrey A.; Eastwood, James D.; Fiebach, Jochen B.; Fisher, Marc; Furie, Karen L.; Goldmakher, Gregory V.; Hacke, Werner; Kidwell, Chelsea C.; Kloska, Stephen P.; Köhrmann, Martin; Koroshetz, Walter; Lee, Ting-Yim; Lees, Kennedy R.; Lev, Michael H.; Liebeskind, David S; Østergaard, Leif; Powers, William J; Provenzale, James; Schellinger, Peter; Silbergleit, Robert; Sorensen, Alma Gregory; Wardlaw, Joanna; Wu, Ona; Warach, Steven.

    In: Stroke, Vol. 39, No. 5, 2008, p. 1621-8.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  21. Published

    Carbogen increases oxygen transport to brain tissue. / Ashkanian, Mahmoud; Borghammer, Per; Vafaee, M; Andersen, Grethe; Østergaard, Leif; Gjedde, Albert.

    2008. Poster session presented at Gordon Research Conference on Brain Energy Metabolism and Blood Flow, Andover, United States.

    Research output: Contribution to conferencePosterResearch

  22. Published

    Clinical utility of parametric perfusion estimates in prediction of final outcome in acute stroke. / Mouridsen, Kim; Jonsdottir, Kristjana Yr; Jespersen, Sune Nørhøj; Østergaard, Leif.

    2008. Poster session presented at ISMRM, Toronto, Canada.

    Research output: Contribution to conferencePosterResearch

  23. Published

    Clinical utility of parametric perfusion estimates in prediction of final outcome in acute stroke. / Mouridsen, Kim; Jonsdottir, Kristjana Yr; Jespersen, Sune Nørhøj; Østergaard, Leif.

    2008. Paper presented at International society of magnetic resonance in medicine, annual meeting 2008, Toronto, Canada.

    Research output: Contribution to conferencePaperResearch

  24. Published

    Combretastatin activity in tumours: factors of importance. / Nielsen, Thomas; Murata, Rumi; Maxwell, Ross James; Stødkilde-Jørgensen, Hans; Østergaard, Leif; Ley, Carsten Dan; Kristjansen, Paul Ejnar Gremaud; Horsman, Michael Robert.

    2008. Poster session presented at 21st Annual Meeting of the Danish Cancer Research Society, Denmark.

    Research output: Contribution to conferencePosterResearch

  25. Submitted

    Comparing relative importance of MR modalities in hyper-acute and sub-acute phase using multiparametric statistical models. / Jonsdottir, Kristjana Yr; Hjort, Niels; Østergaard, Leif; Mouridsen, Kim.

    2008. Paper presented at ISMRM, 2008, New Orleans, United States.

    Research output: Contribution to conferencePaperResearch

  26. Published

    Diffusion tractography on white matter lesions in late-onset major depression. / Dalby, Rikke Beese; Madsen, Jamila Ahdidan; Frandsen, Jesper; Mallar, Chakravarty; Sørensen, L; Tehrani, Elisabeth; Rosenberg, Raben; Østergaard, Leif; Videbech, Poul.

    2008. Poster session presented at Neuroscience 2008 (SFN), Washington DC, United States.

    Research output: Contribution to conferencePosterResearchpeer-review

  27. Published

    Effect of combretastatin on tumor vessel volume and size distribution. / Nielsen, Thomas; Bentzen, Lise Nørgaard; Pedersen, M.; Horsman, Michael Robert; Østergaard, Leif.

    2008. Poster session presented at 20th Annual Meeting of the Danish Association for Cancer Research, Vilvorde, Denmark.

    Research output: Contribution to conferencePosterResearch

  28. Published

    Gadofosveset in brain MRI. / Poulsen, Erik Søndergaard; Olsen, Aage Kristian; Hjort, Niels; Østergaard, Leif.

    2008. Abstract from MRI Conference, .

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  29. Published

    How reliable is perfusion MR in acute stroke? Validation and determination of the penumbra threshold against quantitative PET. / Takasawa, Masashi; Jones, P. Simon; Guadagno, Joseph V.; Christensen, Søren; Fryer, Tim D.; Harding, Sally; Gillard, Jonathan H.; Williams, Guy B.; Aigbirhio, Franklin I.; Warburton, Elizabeth A.; Østergaard, Leif; Baron, Jean-Claude.

    In: Stroke, Vol. 39, No. 3, 2008, p. 870-7.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  30. Published

    Improvement of brain tissue oxygenation by inhalation of carbogen. / Ashkanian, M; Borghammer, Per; Gjedde, A; Østergaard, Leif; Vafaee, M.

    In: Neuroscience, Vol. 156, No. 4, 2008, p. 932-938.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  31. Published

    Inferring origin of vascular supply from tracer arrival timing patterns using bolus tracking MRI. / Christensen, Søren; Calamante, Fernando; Hjort, Niels; Wu, Ona; Blankholm, Anne Dorte; Desmond, Patricia; Davis, Steven; Østergaard, Leif.

    In: Journal of Magnetic Resonance Imaging, Vol. 27, No. 6, 2008, p. 1371-81.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  32. Published

    Inhalation af karbogen forbedrer ilttransporten til hjernevævet. / Ashkanian, Mahmoud; Mouridsen, Kim; Vafaee, M; Andersen, Grethe; Gjedde, Albert; Østergaard, Leif.

    2008. Poster session presented at Psykiatriens 3. Forskningsdag, Risskov, Denmark.

    Research output: Contribution to conferencePosterResearch

  33. Published

    Kognitiv dysfunktion og depression ved kronisk hepatitis C. / Renvillard, Signe Groth; Hjerrild, Simon; Østergaard, Leif; Leutscher, Peter; Laursen, Alex Lund; Gade, A; Videbech, Poul.

    2008. Poster session presented at Psykiatriens 3. Forskningsdag, Risskov, Denmark.

    Research output: Contribution to conferencePosterResearch

  34. Published

    MRI detection of early blood-brain barrier disruption: Parenchymal enhancement predicts focal hemorrhagic transformation after thrombolysis. / Hjort, Niels; Wu, Ona; Ashkanian, Mahmoud; Sølling, Christine; Mouridsen, Kim; Christensen, Søren; Gyldensted, Carsten; Andersen, Grethe; Østergaard, Leif.

    In: Stroke, Vol. 39, No. 3, 2008, p. 1025-8.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  35. Published

    Modelling the regulation of cerebral oxygen extraction by flow heterogeneity. / Jespersen, Sune Nørhøj; Ashkanian, Mahmoud; Mouridsen, Kim; Østergaard, Leif.

    2008. Poster session presented at Forskningens dag, Århus, Denmark.

    Research output: Contribution to conferencePosterResearch

  36. Published

    Modelling the regulation of cerebral oxygen extraction by flow heterogeneity. / Jespersen, Sune Nørhøj; Ashkanian, Mahmoud; Mouridsen, Kim; Østergaard, Leif.

    2008. Abstract from International society of magnetic resonance in medicine, annual meeting 2008, Toronto, Canada.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  37. Published

    Preclinical studies to predict efficacy of vascular changes induced by combretastatin a-4 disodium phosphate in patients. / Nielsen, Thomas; Murata, Rumi; Maxwell, Ross J; Stødkilde-Jørgensen, Hans; Østergaard, Leif; Horsman, Michael R.

    In: International Journal of Radiation Oncology, Biology, Physics, Vol. 70, No. 3, 2008, p. 859-66.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  38. Published

    Påvirkning af hjernen hos patienter med kronisk smitsom leverbetændelse vurderet ved MR-skanning. / Hjerrild, Simon; Renvillard, Signe Groth; Østergaard, Leif; Leutscher, Peter; Laursen, Alex Lund; Videbech, Poul.

    2008. Poster session presented at Psykiatriens 3. Forskningsdag, Risskov, Denmark.

    Research output: Contribution to conferencePosterResearch

  39. Published

    Robustness of prognostic models to interrater variability in delineating final infarct lesin. / Ribe, Lars Riisgaard; Mouridsen, Kim; Hjort, Niels; Jonsdottir, Kristjana Yr; Østergaard, Leif.

    2008. Poster session presented at International Stroke Conference, New Orleans, United States.

    Research output: Contribution to conferencePosterResearch

  40. Published

    Sammenhænge mellem depression og kardiovaskulær sygdom hos førstegangsdeprimerede over 50 år. / Devantier, Torben Albert; Nørgaard, Bjarne Linde; Østergaard, Leif; Videbech, Poul.

    2008. Poster session presented at Psykiatriens 3. Forskningsdag, Risskov, Denmark.

    Research output: Contribution to conferencePosterResearch

  41. Published

    Segmentation of dynamic contrast enhanced magnetic resonance imaging data. / Nielsen, Thomas; Mouridsen, Kim; Maxwell, Ross J; Stødkilde-Jørgensen, Hans; Østergaard, Leif; Horsman, Michael R.

    In: Acta Oncologica, Vol. 47, No. 7, 2008, p. 1265-70.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  42. Published
    Stroke MRI - Time is Brain! Østergaard, Leif (Producer); Hjort, Niels (Producer); Sølling, Christine (Producer); Zeidler, Dora (Producer); Weitzel, Paul von (Producer); Nielsen, Edith (Producer); Bock, Vibeke (Producer); Bay Thomsen, Rikke (Producer); Vuust, Henriette Blæsild (Producer). 2008. Berlin.

    Research output: Non-textual formPictures, Video and sound recordings (digital)Research

  43. Published

    Testing the reproducibility of Diffusion Tensor Imaging at 3.0 T. / Frandsen, Jesper; Østergaard, Leif; Jensen, Eva Bjørn Vedel.

    2008. Poster session presented at Forskningens Dag, Århus, Denmark.

    Research output: Contribution to conferencePosterResearch

  44. Published

    The effect of impermeable boundaries of arbitrary geometry on the apparent diffusion coefficient. / Frøhlich, Astrid From; Jespersen, Sune Nørhøj; Østergaard, Leif; Kiselev, Valerij G.

    In: Journal of Magnetic Resonance, Vol. 194, No. 1, 2008, p. 128-35.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  45. Published

    Using principal component analysis and generalized linear models to predict final outcome in acute stroke. / Jonsdottir, Kristjana Yr; Østergaard, Leif; Mouridsen, Kim.

    2008. Paper presented at ISMRM, 2007, Berlin, Germany.

    Research output: Contribution to conferencePaperResearch

  46. Published

    White matter lesions and changes in cerebral microstructure in late-onset major depression : A diffusion tensor imaging study. / Dalby, Rikke Beese; Madsen, Jamila Ahdidan; Frandsen, Jesper; Sørensen, Leif; Tehrani, Elisabeth; Rosenberg, Raben; Østergaard, Leif; Videbech, Poul.

    In: International Journal of Neuropsychopharmacology, Vol. 11, No. Suppl. S1, 2008, p. 99-99.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperConference abstract in journalResearch

  47. 2007
  48. Published

    Hyperoxia- and hypercapnia-induced changes of cerebral blood flow and metabolic rate of oxygen in ischemic brain tissue. / Ashkanian, Mahmoud; Borghammer, Per; Andersen, Grethe; Gjedde, Albert; Ostergaard, Leif; Vafaee, Manouchehr.

    In: Journal of Cerebral Blood Flow and Metabolism, Vol. 27, No. SUPPL. 1, 13.11.2007.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  49. Published

    Statistical mapping of effects of middle cerebral artery occlusion (MCAO) on blood flow and oxygen consumption in porcine brain. / Watanabe, Hideaki; Sakoh, Masaharu; Andersen, Flemming; Rodell, Anders; Sørensen, Jens Christian Hedemann; Østergaard, Leif; Mouridsen, Kim; Cumming, Paul.

    In: Journal of Neuroscience Methods, Vol. 160, No. 1, 15.02.2007, p. 109-15.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  50. Published

    "Strategic" and "tactical" chess differentiate in their hippocampal and precuneus requirements in expert chess players. / Wallentin, Mikkel; Roepstorff, Andreas; Vestergaard-Poulsen, Peter; Østergaard, Leif; Gebauer, Line; Linnet, Jakob; Østergaard, Svend.

    2007. Poster session presented at Society for Neuroscience, San Diego, United States.

    Research output: Contribution to conferencePosterResearch

  51. Published

    Automatic Correction For Signal Intensity Drift In Diffusion Weighted Images. / Frandsen, Jesper; Sangill, Ryan; Østergaard, Leif; Zeidler, Dora; Vestergaard-Poulsen, Peter.

    2007. Poster session presented at ISMRM 14th Scientific Meeting & Exhibition, Seattle, Washington, United States.

    Research output: Contribution to conferencePosterResearch

  52. Published

    Bayesian regularization of diffusion tensor images. / Frandsen, Jesper; Hobolth, Asger; Østergaard, Leif; Vestergaard-Poulsen, Peter; Jensen, Eva Bjørn Vedel.

    In: Biostatistics, Vol. 8, No. 4, 2007, p. 784-799.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  53. Published

    Billeddiagnostik af patofysiologien ved akut apopleksi. / Ashkanian, Mahmoud; Hjort, Niels; Sølling, Christine; Gyldensted, Carsten; Østergaard, Leif.

    In: Ugeskrift for Laeger, Vol. 169, No. 40, 2007, p. 3369-72.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  54. Published

    Dynamic changes in corticospinal tracts after stroke detected by fibretracking. / Møller, Mette; Frandsen, Jesper; Andersen, Grethe; Gjedde, Albert; Vestergaard-Poulsen, Peter; Østergaard, Leif.

    In: Journal of Neurology, Neurosurgery and Psychiatry, Vol. 78, No. 6, 2007, p. 587-92.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  55. Published

    Host tissue dependence on the tracer relaxation effect in Spin Echo. / Kjølby, Birgitte Fuglsang; Morell, Arvid; Saeboe, Karen; Kiselev, Valerij G; Haldorsen, Anita G.; Østergaard, Leif; Bjørnerud, Atle.

    Joint Annual Meeting ISMRM-ESMRMB 2007. International Society of Magnetic Resonance in Medicine, 2007.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  56. Published

    Infarct prediction and treatment assessment with MRI-based algorithms in experimental stroke models. / Wu, Ona; Sumii, T; Asahi, M; Sasamata, M; Østergaard, Leif; Rosen, BR; Lo, EH; Dijkhuizen, RM.

    In: Journal of Cerebral Blood Flow and Metabolism, Vol. 27, No. 1, 2007, p. 196-204.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  57. Published

    Micro structural changes in ischemic cortical gray matter predicted by a model of diffusion weighted MRI. / Vestergaard-Poulsen, Peter; Hansen, Brian; Østergaard, Leif; Jakobsen, Rikke.

    26. ed. J. Magnetic Resonance Imaging, 2007. p. 529-40.

    Research output: Working paperResearch

  58. Published

    Microstructural changes in ischemic cortical gray matter predicted by a model of diffusion-weighted MRI. / Vestergaard-Poulsen, Peter; Hansen, Brian; Østergaard, Leif; Jakobsen, Rikke.

    In: Journal of Magnetic Resonance Imaging, Vol. 26, No. 3, 2007, p. 529-40.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  59. Published

    Modeling dendrite density from magnetic resonance diffusion measurements. / Jespersen, Sune Nørhøj; Kroenke, CD; Østergaard, Leif; Ackerman, JJ; Yablonskiy, DA.

    In: NeuroImage, Vol. 34, No. 4, 2007, p. 1473-1486.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  60. Published

    Modeling the regulation of cerebral oxygenextraction by flow heterogeneity. / Jespersen, Sune Nørhøj; Ashkanian, Mahmoud; Mouridsen, Kim; Østergaard, Leif.

    2007. Abstract from Workshop on cerebral perfusion and brain function 2007, Salvador da Bahia, Brazil.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  61. Published

    Optimizing DSC perfusion-imaging by minimizing susceptibility artefacts at 3 Tesla parallel imaging and SE versus GRE : 3rd place research focus poster award. / Blankholm, Anne Dorte; Mouridsen, Kim; Ashkanian, Mahmoud; Gyldensted, Carsten; Østergaard, Leif.

    Optimizing DSC perfusion-imaging by minimizing susceptibility artefacts at 3 Tesla parallel imaging and SE versus GRE. 2007. p. 1.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  62. Published

    Predictive Models in Multimodal Imaging. / Mouridsen, Kim; Østergaard, Leif.

    Neurodegenereration in Multiple Sclerosis. ed. / Massimo Filippi; Marco Rovaris; Giancarlo Comi. Italy : Springer, 2007. p. 127-149 (Topics in Neuroscience).

    Research output: Contribution to book/anthology/report/proceedingBook chapterResearch

  63. Published

    Realistic model of partial volume effect on the AIF in dynamic susceptibility contrast perfusion MRI. / Kjølby, Birgitte Fuglsang; Østergaard, Leif; Kiselev, Valerij G.

    Joint Annual Meeting ISMRM-ESMRMB 2007. International Society of Magnetic Resonance Imaging, 2007.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  64. Published

    Relaxivity of blood pool contrast agent depends on the host tissue as suggested by semianalytical simulations. / Kjølby, Birgitte Fuglsang; Østergaard, Leif; Kiselev, Valerij.

    2007. Poster session presented at SVF PhD Day 2007, Aarhus, Denmark.

    Research output: Contribution to conferencePosterResearch

  65. Published

    Statistical mapping of effects of middle cerebral artery occlusion (MCAO) on blood flow and oxygen concymption in porcine brain. / Watanabe, H.; Sakoh, M.; Andersen, F.; Rodell, A.; Sørensen, Jens Christian H.; Østergaard, Leif; Mouridsen, Kim; Cumming, P.

    In: J. Neurosci. Methods, 2007.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  66. Published

    Theoretical Analysis of Perfusion Measurement using GE at 1.5 T and 3T. / Kjølby, Birgitte Fuglsang; Østergaard, Leif; Kiselev, Valerij G.

    ESMRMB. ESMRMB, 2007.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  67. 2006
  68. Published

    Polyrhythmic communicational devices appear as languagein the brains of musicians. / Vuust, Peter; Østergaard, Leif; Roepstorff, Andreas.

    ICMPC9 - International Conference on Music Perception and Cognition. ESCOM, 2006.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  69. Published

    Are MRI-Based Predictive Models Comparable Among Stroke Centers? / Hjort, Niels; Wu, Ona; Ashkanian, Mahmoud; Sølling, Christine; Mouridsen, Kim; Christensen, Søren; Fiehler, Jens; Thomalla, Götz; Kucinski, Thomas; Röther, Joachim; Andersen, Grethe; Østergaard, Leif.

    2006. Poster session presented at International Stroke Conference, Orlando, United States.

    Research output: Contribution to conferencePosterResearch

  70. Published

    Assessing the outcome of stroke : a comparison between MRI and clinical stroke scales. / Nuutinen, J; Liu, Y; Laakso, MP; Karonen, JO; Roivainen, R; Vanninen, RL; Partanen, K; Østergaard, Leif; Sivenius, J; Aronen, HJ.

    In: Acta Neurologica Scandinavica, Vol. 113, No. 2, 2006, p. 100-107.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  71. Published

    Automatic Correction For Signal Intensity Drift in Magnetic Resonance Diffusion Weighted Images. / Frandsen, Jesper; Sangill, Ryan; Østergaard, Leif; Zeidler, Dora; Vestergaard-Poulsen, Peter.

    2006. Poster session presented at Forskningens Dag, Århus, Denmark.

    Research output: Contribution to conferencePosterResearch

  72. Published

    Automatic selection of arterial input function using cluster analysis. / Mouridsen, Kim; Christensen, Søren; Gyldensted, Louise; Østergaard, Leif.

    In: Magnetic Resonance in Medicine, Vol. 55, No. 3, 2006, p. 524-531.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  73. Published

    Bayesian estimation of perfusion parameters using a physiological model for the microvasculature. / Mouridsen, Kim; Friston, Karl; Hjort, Niels; Gyldensted, Louise; Østergaard, Leif; Kiebel, Stefan.

    In: NeuroImage, Vol. 33, No. 2, 2006, p. 570-579.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  74. Published

    Characterizing physiological heterogeneity of infarction risk in acute human ischaemic stroke using MRI. / Wu, Ona; Christensen, Søren; Hjort, Niels; Dijkhuizen, RM; Kucinski, T; Fiehler, J; Thomalla, G; Rother, J; Østergaard, Leif.

    In: Brain, Vol. 129, No. 9, 2006, p. 2384–2393.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  75. Published

    Contrast Bolus Magnetic Resonance Imaging in Alzheimer's Disease and Mild Cognitive Impairment. / Gyldensted, Louise; Mouridsen, Kim; Rodell, Anders; Østergaard, Leif; Gyldensted, Carsten.

    2006. Poster session presented at 10th International Conference on Alzheimer's Disease and Related Disorders, Madrid, Spain.

    Research output: Contribution to conferencePosterResearch

  76. Published

    Diffusion weighted signal at short times in the presence of impermeable interfaces. / Frøhlich, Astrid From; Østergaard, Leif; Kiselev, Valerij G.

    2006. Poster session presented at Diffusion weighted signal at short times in the presence of impermeable interfaces, Seattle, United States.

    Research output: Contribution to conferencePosterResearch

  77. Published

    Effect of Impermeable boundaries on Diffusion-Attenuated MR Signal. / Frøhlich, Astrid From; Østergaard, Leif; Kiselev, Valerij G.

    In: Journal of Magnetic Resonance, Vol. 179, 2006, p. 223-233.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  78. Published

    Hypofractionation: Effects on Growth and Vasculature in a Preclinical Tumour Model. / Nielsen, Thomas; Østergaard, Leif; Overgaard, Jens; Horsman, Michael Robert.

    2006. Abstract from 10th International Tumor Microenvironment Workshop, Boston, United States.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  79. Published

    Imaging microvascular flow distribution using residue function shape characteristics. / Mouridsen, Kim; Kiebel, Stefan; Hjort, Niels; Østergaard, Leif.

    2006. Poster session presented at Imaging microvascular flow distribution using residue function shape characteristics, .

    Research output: Contribution to conferencePosterResearch

  80. Published

    Implementing MRI based selection Criteria for Thrombolysis in Acute Stroke within the 3 hour window: Efficacy over a 2 year period. / Sølling, Christine; Hjort, Niels; Ashkanian, Mahmoud; Andersen, Grethe; Østergaard, Leif.

    2006. Abstract from Joint World Congress on Stroke 2006, Cape Town, South Africa.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  81. Published

    It don't mean a thing... Keeping the rhythm during polyrhythmic tension, activates language areas (BA47). / Vuust, Peter; Roepstorff, Andreas; Wallentin, Mikkel; Mouridsen, Kim; Østergaard, Leif.

    In: NeuroImage, Vol. 31, No. 2, 2006, p. 832-41.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  82. Published

    MRI Findings in Late-Onset Major Depression. / Dalby, Rikke Beese; Tehrani, Elisabeth; Ahdidan, Jamila; Sørensen, Leif Hougaard; Bek, Toke; Østergaard, Leif; Rosenberg, Raben; Videbech, Poul.

    2006. Poster session presented at Psykiatriens Forskningsdag, Århus, Denmark.

    Research output: Contribution to conferencePosterResearch

  83. Published

    MRI Findings in Late-Onset Major Depression. / Dalby, Rikke Beese; Tehrani, Elisabeth; Ravnkilde, Barbara; Bruun, Louise Meldgaard; Jensen, Claus Zander; Ahdidan, Jamila; Østergaard, Leif; Rosenberg, Raben; Videbech, Poul.

    2006. Poster session presented at Dansk Psykiatrisk Selskabs Årsmøde, Nyborg, Denmark.

    Research output: Contribution to conferencePosterResearch

  84. Published

    Månedens billede. / Hjort, Niels; Ashkanian, Mahmoud; Sølling, Christine; Andersen, Grethe; Østergaard, Leif.

    In: Ugeskrift for Laeger, Vol. 168, No. 38, 2006, p. 3230.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperLetterpeer-review

  85. Published

    Preclinical studies on hypofractionation using a C3H mouse mammary carcinoma model. / Horsman, Michael Robert; Nielsen, Thomas; Østergaard, Leif; Overgaard, Jens.

    2006. Abstract from Third Acta Oncologica Symposium, København, Denmark.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  86. Published

    Radiation administered as a large single dose or in a fractionated schedule : Role of the tumour vasculature as a target for influencing response. / Horsman, Michael R; Nielsen, Thomas; Østergaard, Leif; Overgaard, Jens.

    In: Acta Oncologica, Vol. 45, No. 7, 2006, p. 876-80.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  87. Published

    Regularization of Diffusion Tensor Fields in Axonal Fibre Tracking. / Frandsen, Jesper; Hobolth, Asger; Østergaard, Leif; Vestergaard-Poulsen, Peter; Vedel, Eva Bjørn.

    2006. Poster session presented at PhD Day 2006, The Faculty of Health Sciences, Aarhus, Denmark.

    Research output: Contribution to conferencePosterResearch

  88. Published

    Relationship between combretastatin induced changes in DCEMRI parameters and radiation response in a murine tumour model. / Nielsen, Thomas; Murata, Rumi; Maxwell, Ross J.; Stødkilde-Jørgensen, Hans; Østergaard, Leif; Horsman, Michael Robert.

    2006. Abstract from PhD Day, University of Aarhus, Graduate School of Health Sciences, Århus, Denmark.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  89. Published

    Relaxivity of blood pool contrast agent depends on the host tissue as suggested by semianalytical simulations. / Jensen, Birgitte Fuglsang; Østergaard, Leif; Kiselev, Valerij G.

    2006. Poster session presented at ISMRM 14th Scientific Meeting & Exhibition, Seattle, United States.

    Research output: Contribution to conferencePosterResearch

  90. Published

    The Physiological Significance of the Tmax Parameter in Bolus Tracking MRI. / Christensen, Søren; Wu, Ona; Butcher, K; Hjort, Niels; Karstoft, Henrik; Davis, S; Østergaard, Leif.

    2006. Abstract from ISMRM 14th Annual Meeting, Seattle, United States.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  91. Published

    The impact of susceptibility gradients on cartesian and spiral EPI for BOLD fMRI. / Sangill, Ryan; Wallentin, Mikkel; Østergaard, Leif; Vestergaard-Poulsen, Peter.

    In: Magnetic Resonance Materials in Physics, Biology and Medicine, Vol. 19, No. 3, 2006, p. 105-114.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  92. Published

    The use of dynamic contrast enhanced magnetic resonance imaging for evaluating the effects of combretastatin A-4 disodium phosphate in differently perfused tumour areas. / Nielsen, Thomas; Maxwell, Ross J.; Stødkilde-Jørgensen, Hans; Østergaard, Leif; Horsman, Michael Robert.

    2006. Poster session presented at Danish Society for Cancer Research Annual Meeting, Denmark.

    Research output: Contribution to conferencePosterResearch

  93. Published

    Theoretical model of intravascular paramagnetic tracers effect on tissue relaxation. / Kjølby, Birgitte Fuglsang; Østergaard, Leif; Kiselev, Valerij G.

    In: Magnetic Resonance in Medicine, Vol. 56, No. 1, 2006, p. 187-197.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  94. Published

    Thresholding Artefacts in sSVD and oSVD Deconvolution. / Gyldensted, Louise; Mouridsen, Kim; Østergaard, Leif.

    2006. Poster session presented at ISMRM 14th Scientific Meeting & Exhibition, Seattle, United States.

    Research output: Contribution to conferencePosterResearch

  95. Published

    Tracking Vascular Supply Using Bolus Tracking MRI. / Christensen, Søren; Manka, C; Østergaard, Leif; Calamante, F.

    2006. Abstract from ISMRM 14th Annual Meeting, Seattle, United States.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  96. Published

    Transfer constant and plasma volume fraction in dynamic contrast enhanced magnetic resonance imaging: different dependencies on tumour model, size, and antivascular treatment. / Nielsen, Thomas; Maxwell, R.J.; Stødkilde-Jørgensen, Hans; Østergaard, Leif; Horsman, Michael Robert.

    2006. Abstract from 13th Scientific Meeting of the International Society for Magnetic Resonance in Medicine, Miami, United States.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  97. Published

    Trombolyse af apopleksipatienter : første års erfaringer og resultater på Århus Sygehus. / Sølling, Christine; Hjort, Niels; Ashkanian, Mahmoud; Weitzel-Mudersbach, Paul von; Østergaard, Leif; Andersen, Grethe.

    In: Ugeskr for Læger, Vol. 168, No. 25, 2006, p. 2452-2456.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  98. Published

    White Matter Lesions in Late-Onset Major Depression. / Dalby, Rikke Beese; Tehrani, Elisabeth; Ahdidan, Jamila; Sørensen, Leif Hougaard; Østergaard, Leif; Rosenberg, Raben; Videbech, Poul.

    2006. Poster session presented at Second Dual Congress on Psychiatry and the Neurosciences, Athen, Greece.

    Research output: Contribution to conferencePosterResearchpeer-review

  99. 2005
  100. Published

    Intravascular contrast agent-enhanced MRI measuring contrast clearance and tumor blood volume and the effects of vascular modifiers in an experimental tumor. / Bentzen, Lise; Vestergaard-Poulsen, Peter; Nielsen, Thomas; Overgaard, Jens; Bjørnerud, Atle; Briley-Saebø, Karen; Horsman, Michael R; Østergaard, Leif.

    In: International Journal of Radiation Oncology, Biology, Physics, Vol. 61, No. 4, 15.03.2005, p. 1208-15.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  101. Published

    Abnormal intravoxel cerebral blood flow heterogeneity in human ischemic stroke determined by dynamic susceptibility contrast magnetic resonance imaging. / Perkiö, Jussi; Soinne, Lauri; Østergaard, Leif; Helenius, Johanna; Kangasmäki, Aki; Martinkauppi, Sami; Salonen, Oili; Savolainen, Sauli; Kaste, Markku; Tatlisumak, Turgut; Aronen, Hannu J.

    In: Stroke; a journal of cerebral circulation, Vol. 36, No. 1, 2005, p. 44-9.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  102. Published

    Applying instance-based techniques to prediction of final outcome in acute stroke. / Gottrup, Christian; Thomsen, Knud; Locht, Peter; Wu, Ona; Sorensen, A Gregory; Koroshetz, Walter J; Østergaard, Leif.

    In: Artificial Intelligence in Medicine, Vol. 33, No. 3, 2005, p. 223-36.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  103. Published

    A MRI-compatible stereotaxic localizer box enables high-precision stereotaxic procedures in minipigs. / Sørensen, Jens Christian H.; Bjarkam, Carsten; Cancian, Gratiano; Larsen, Mette; Rosendal, Frederikke; Ettrup, Kåre Sanden; Zeidler, Dora; Blankholm, Anne Dorthe; Østergaard, Leif; Sunde, Niels.

    2005. Abstract from 14th Meeting of the World Society for Stereotatic and Functional Neurosurgery, Rom, Italy.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  104. Published

    Bayesian Estimation of perfusion Parameters Using a Physiological Model of the Microvasculature. / Mouridsen, Kim; Gyldensted, Louise; Friston, Karl; Østergaard, Leif; Kiebel, Stefan.

    2005. Poster session presented at ISMRM 2005, Miami, United States.

    Research output: Contribution to conferencePosterResearch

  105. Published

    Cerebral metabolic response to low blood flow : possible role of cytochrome oxidase inhibition. / Gjedde, Albert; Johannsen, Peter; Cold, Georg; Østergaard, Leif.

    In: Journal of Cerebral Blood Flow and Metabolism, Vol. 25, No. 9, 2005, p. 1183-96.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review