Leif Østergaard

  1. 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: ResearchPoster

  2. 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: Research - peer-reviewArticle in proceedings

  3. Published

    Predicting tissue outcome in acute ischemic stroke using projection pursuit regression. / Nagenthiraja, Kartheeban; Jonsdottir, Kristjana Yr; Østergaard, Leif; Mouridsen, Kim.

    Proc. Intl. Soc. Mag. Reson. Med.. 17. ed. 2009. p. 36.

    Research output: ResearchConference abstract in proceedings

  4. Published

    A Fully Automated Penumbra Segmentation Tool. / Nagenthiraja, Kartheeban; Ribe, Lars Riisgaard; Hougaard, Kristina Dupont; Østergaard, Leif; Mouridsen, Kim.

    2012.

    Research output: Research - peer-reviewConference abstract for conference

  5. Published

    A Hybrid Approach to Simulate the Transverse Relaxation Effect of the Vascular Network. / Kjølby, Birgitte Fuglsang; Østergaard, Leif; Kiselev, Valerij G.

    ESMRMB. ESMRMB, 2004.

    Research output: Research - peer-reviewArticle in proceedings

  6. Published

    A MRI-compatible stereotaxic localizer box enables high-precision stereotaxic procedures in pigs. / Bjarkam, Carsten Reidies; Cancian, G.; Larsen, M.; Rosendahl, F.; Ettrup, Kåre Schmidt Ettrup; Zeidler, Dora; Blankholm, Anne Dorte; Østergaard, Leif; Sunde, Niels; Sørensen, Jens Christian H.

    In: Journal of Neuroscience Methods, Vol. 139, No. 2, 2004, p. 293-298.

    Research output: ResearchJournal article

  7. 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: ResearchPoster

  8. Published

    A fractal based model of diffusion MRI in cortical grey matter. / Hansen, Brian; Østergaard, Leif; Vestergaard-Poulsen, Peter.

    In: Diffusion Fundamentals, Vol. 11, 2009, p. 1-23.

    Research output: Research - peer-reviewJournal article

  9. Published

    A fractal model of diffusion weighted MRI in cortical grey matter. / Hansen, Brian; Østergaard, Leif; Vestergaard-Poulsen, Peter.

    2009. Abstract from Diffusion Fundamentals, Athen, Greece.

    Research output: Research - peer-reviewConference abstract for conference

  10. Published

    A multicenter, randomized, double-blind, placebo-controlled trial to test efficacy and safety of magnetic resonance imaging-based thrombolysis in wake-up stroke (WAKE-UP). / Thomalla, Götz; Fiebach, Jochen B; Østergaard, Leif; Pedraza, Salvador; Thijs, Vincent; Nighoghossian, Norbert; Roy, Pascal; Muir, Keith W; Ebinger, Martin; Cheng, Bastian; Galinovic, Ivana; Cho, Tae-Hee; Puig, Josep; Boutitie, Florent; Simonsen, Claus Z; Endres, Matthias; Fiehler, Jens; Gerloff, Christian; WAKE-UP investigators.

    In: International Journal of Stroke, Vol. 9, No. 6, 08.2014, p. 829-36.

    Research output: Research - peer-reviewJournal article

  11. Published

    A new intracerebral microinjection device enabling multiple minimally invasive injections of stem cells and therapeutics in a large cylindrical brain volume from one central injection tract. / Sørensen, Jens Christian H.; Bjarkam, Carsten; Larsen, Mette; Rosendal, Frederikke; Olsen, Aage K.; Østergaard, Leif; Zeidler, Dora; Blankholm, Anne Dorthe; Zimmer, Jens; Meyer, Morten; Scouten, Charles; Cunningham, Miles.

    2004. Abstract from 4th Forum of European Neuroscience, Lissabon, Portugal.

    Research output: ResearchConference abstract for conference

  12. Published

    A porcine model for long-term stroke studies. / Olsen, Aage Kristian; Watanabe, Hideaki; Bjarkam, Carsten Reidies; Rodell, Anders; Zeidler, Dora; Blankholm, Anne Dorte; Cumming, Paul; Gyldensted, Carsten; Østergaard, Leif; Vestergaard-Poulsen, Peter; Gjedde, Albert.

    2003. Abstract from ScandLAS Symposium, Lahti, Finland.

    Research output: ResearchConference abstract for conference

  13. 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: Research - peer-reviewJournal article

  14. Published

    Absolute cerebral blood flow and blood volume measured by magnetic resonance imaging bolus tracking: comparison with positron emission tomography values. / Østergaard, Leif; Smith, D F; Vestergaard-Poulsen, Peter; Hansen, Søren Baarsgaard; Gee, A D; Gjedde, A; Gyldensted, C.

    In: Journal of Cerebral Blood Flow and Metabolism, Vol. 18, No. 4, 1998, p. 425-32.

    Research output: Research - peer-reviewJournal article

  15. Published
  16. Published

    Accumulation of magnetic iron oxide nanoparticles coated with variably sized polyethylene glycol in murine tumors. / Larsen, Esben Kjær Unmack; Nielsen, Thomas; Wittenborn, Thomas; Rydtoft, Louise Munk; Lokanathan, Arcot R.; Hansen, Line; Østergaard, Leif; Kingshott, Peter; Howard, Kenneth A; Besenbacher, Flemming; Nielsen, Niels Christian; Kjems, Jørgen.

    In: Nanoscale, Vol. 4, No. 7, 06.03.2012, p. 2352-2361 .

    Research output: Research - peer-reviewJournal article

  17. Published

    Accuracy and reliability assessment of CT and MR perfusion analysis software using a digital phantom. / Kudo, Kohsuke; Christensen, Søren; Sasaki, Makoto; Østergaard, Leif; Shirato, Hiroki; Ogasawara, Kuniaki; Wintermark, Max; Warach, Steven; Stroke Imaging Repository (STIR) Investigators.

    In: Radiology, Vol. 267, No. 1, 04.2013, p. 201-11.

    Research output: Research - peer-reviewJournal article

  18. Published

    Accurate and Fast Perfusion Lesion Segmentation Tool for Clinical Settings. / Nagenthiraja, Kartheeban; Ribe, Lars Riisgaard; Østergaard, Leif; Mouridsen, Kim.

    2011.

    Research output: ResearchConference abstract for conference

  19. Published

    Acute Stroke : Automatic Perfusion Lesion Outlining Using Level Sets. / Mouridsen, Kim; Nagenthiraja, Kartheeban; Jónsdóttir, Kristjana Yr; Ribe, Lars R; Neumann, Anders B; Hjort, Niels; Østergaard, Leif.

    In: Radiology, Vol. 269, No. 2, 17.05.2013, p. 404-12.

    Research output: Research - peer-reviewJournal article

  20. Published

    Acute Stroke Imaging Research Roadmap II. / Wintermark, Max; Albers, Gregory W; Broderick, Joseph P; Demchuk, Andrew M; Fiebach, Jochen B; Fiehler, Jens; Grotta, James C; Houser, Gary; Jovin, Tudor G; Lees, Kennedy R; Lev, Michael H; Liebeskind, David S; Luby, Marie; Muir, Keith W; Parsons, Mark W; von Kummer, Rüdiger; Wardlaw, Joanna M; Wu, Ona; Yoo, Albert J; Alexandrov, Andrei V; Alger, Jeffry R; Aviv, Richard I; Bammer, Roland; Baron, Jean-Claude; Calamante, Fernando; Campbell, Bruce C V; Carpenter, Trevor C; Christensen, Søren; Copen, William A; Derdeyn, Colin P; Haley, E Clarke; Khatri, Pooja; Kudo, Kohsuke; Lansberg, Maarten G; Latour, Lawrence L; Lee, Ting-Yim; Leigh, Richard; Lin, Weili; Lyden, Patrick; Mair, Grant; Menon, Bijoy K; Michel, Patrik; Mikulik, Robert; Nogueira, Raul G; Østergaard, Leif; Pedraza, Salvador; Riedel, Christian H; Rowley, Howard A; Sanelli, Pina C; Sasaki, Makoto; Saver, Jeffrey L; Schaefer, Pamela W; Schellinger, Peter D; Tsivgoulis, Georgios; Wechsler, Lawrence R; White, Philip M; Zaharchuk, Greg; Zaidat, Osama O; Davis, Stephen M; Donnan, Geoffrey A; Furlan, Anthony J; Hacke, Werner; Kang, Dong-Wha; Kidwell, Chelsea; Thijs, Vincent N; Thomalla, Götz; Warach, Steven J; For the Stroke Imaging Research (STIR) and Virtual International Stroke Trials Archive (VISTA)-Imaging Investigators.

    In: Stroke; a journal of cerebral circulation, Vol. 44, No. 9, 16.07.2013, p. 2628-39.

    Research output: Research - peer-reviewJournal article

  21. 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: Research - peer-reviewJournal article

  22. 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: Research - peer-reviewJournal article

  23. Published

    An evaluation of the time dependence of the anisotropy of the water diffusion tensor in acute human ischemia. / Zelaya, F; Flood, N; Chalk, J B; Wang, D; Doddrell, D M; Strugnell, W; Benson, M; Østergaard, Leif; Semple, J; Eagle, S.

    In: Magnetic Resonance Imaging, Vol. 17, No. 3, 1999, p. 331-48.

    Research output: Research - peer-reviewJournal article

  24. Published

    Analysis of Partial Volume Effects on Arterial Input Functions Using Gradient Echo : A Simulation Study. / Kjølby, Birgitte Fuglsang; Mikkelsen, Irene Klærke; Pedersen, Michael; Østergaard, Leif; Kiselev, Valerij.

    2009. Abstract from ISMRM, Honolulu, Haiti.

    Research output: Research - peer-reviewConference abstract for conference

  25. Published

    Analysis of Partial Volume Effects on Arterial Input Functions Using Gradient Echo: A Simulation Study. / Kjølby, Birgitte Fuglsang; Mikkelsen, Irene Klærke; Pedersen, Michael; Østergaard, Leif; Kiselev, Vaelrij.

    In: Magnetic Resonance in Medicine, Vol. 61, No. 6, 2009, p. 1300-9.

    Research output: Research - peer-reviewJournal article

  26. Published

    Application of Chemical Exchange Saturation Transfer (CEST) MRI in Acute Human Stroke Patients Demonstrates New Potential for Visualization of Tissue Acidosis and Infarction Risk. / Donahue, Manus; Tietze, Anna; Mikkelsen, Irene Klærke; Østergaard, Leif; Strother, Megan; Smith, Seth; Blicher, Jakob.

    2013. Abstract from ISMRM 2013, Salt Lake City, United States.

    Research output: Research - peer-reviewConference abstract for conference

  27. Published

    Application of Chemical Exchange Saturation Transfer (CEST) MRI in Acute Stroke to Visualize Tissue Acidosis and Infarction Risk. / Blicher, Jakob; Tietze, Anna; Mikkelsen, Irene Klærke; Østergaard, Leif; Strother, Megan; Smith, Seth; Donahue, Manus.

    2013. Abstract from World Congress of Neurology, Vienna, Austria.

    Research output: ResearchConference abstract for conference

  28. 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: Research - peer-reviewJournal article

  29. 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: ResearchPoster

  30. Published

    Assessing Response to Stroke Thrombolysis : Validation of 24-Hour Multimodal Magnetic Resonance Imaging. / Campbell, Bruce C. V.; Tu, Hans T. H. ; Christensen, Søren ; Desmond, Patricia M.; Levi, Christopher R.; Blandin, Christopher F.; Hjort, Niels; Ashkanian, Mahmoud; Sølling, Christine; Donnan, Geoffrey A.; Davis, Stephen M. ; Østergaard, Leif; Parsons, Mark W.

    In: Archives of Neurology, Vol. 69, No. 1, 01.01.2012, p. 46-50.

    Research output: Research - peer-reviewJournal article

  31. 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: Research - peer-reviewJournal article

  32. Published

    Assessment of baseline hemodynamic parameters within infarct progression areas in acute stroke patients using perfusion-weighted MRI. / Ritzenthaler, T; Cho, TH; Wiart, M; Berthiller, J; Østergaard, Leif; Hermier, M; Derex, L; Berthezéne, Y; Nighoghossian, Norbert.

    In: Neuroradiology, Vol. 53, No. 8, 27.08.2011, p. 571-576.

    Research output: Research - peer-reviewJournal article

  33. Published

    Assessment of ischemic penumbra in patients with hyperacute stroke using amide proton transfer (APT) chemical exchange saturation transfer (CEST) MRI. / Tietze, Anna; Blicher, Jakob; Mikkelsen, Irene Klærke; Østergaard, Leif; Strother, Megan K; Smith, Seth A; Donahue, Manus J.

    In: N M R in Biomedicine (Online), Vol. 27, No. 2, 02.2014, p. 163-174.

    Research output: Research - peer-reviewJournal article

  34. Published

    Assessment of regional cerebral blood flow by dynamic susceptibility contrast MRI using different deconvolution techniques. / Wirestam, R.; Andersson, L.; Østergaard, Leif; Bolling, M.; Aunola, J.; Lindgren, A.; Geijer, B.; Holtås, S.; Ståhlberg, F.

    In: Magnetic Resonance in Medicine, Vol. 43, No. 5, 2000, p. 691-700.

    Research output: Research - peer-reviewJournal article

  35. E-pub ahead of print

    Assessment of tumor oxygenation and its impact on treatment response in bevacizumab-treated recurrent glioblastoma. / Bonekamp, David; Mouridsen, Kim; Radbruch, Alexander; Kurz, Felix T; Eidel, Oliver; Wick, Antje; Schlemmer, Heinz-Peter; Wick, Wolfgang; Bendszus, Martin; Østergaard, Leif; Kickingereder, Philipp.

    In: Journal of Cerebral Blood Flow and Metabolism, 09.02.2016.

    Research output: Research - peer-reviewJournal article

  36. Published

    Associations between depression and cardiovascular disease in patients with late onset single episode major depressive disorder. / Devantier, Torben Albert; Videbech, Poul; Østergaard, Leif; Nørgaard, Bjarne.

    2009. Poster session presented at WFSBP, 9th World Congress of Biological Psychiatry, Paris, France.

    Research output: ResearchPoster

  37. Published

    Automated Estimation of Salvageable Tissue : Comparison with Expert Readers. / Hansen, Mikkel Bo; Nagenthiraja, Kartheeban; Ribe, Lars Riisgaard; Hougaard, Kristina Dupont; Østergaard, Leif; Mouridsen, Kim.

    In: Journal of Magnetic Resonance Imaging, Vol. 43, No. 1, 01.2016, p. 220-228.

    Research output: Research - peer-reviewJournal article

  38. Published

    Automated decision-support system for prediction of treatment responders in acute ischemic stroke. / Nagenthiraja, Kartheeban; Walcott, B. P. ; Hansen, Mikkel Bo; Østergaard, Leif; Mouridsen, Kim.

    In: Frontiers in Neurology, Vol. 4, 140, 2013.

    Research output: Research - peer-reviewJournal article

  39. 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: ResearchPoster

  40. 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: ResearchPoster

  41. Published

    Automatic mean transit time lesion outlining in acute stroke using level sets. / Mouridsen, Kim; Neumann, Anders; Ribe, Lars Riisgaard; Jonsdottir, Kristjana Yr; Østergaard, Leif.

    2011.

    Research output: Research - peer-reviewConference abstract for conference

  42. 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: Research - peer-reviewJournal article

  43. 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: ResearchConference abstract for conference

  44. Published

    BOLD, CBF, and CBV fMRI measurements in chronic stroke patients reveal details of altered neurovascular coupling. / Donahue, Manus; Stagg, Charlotte; O'Shea, Jacinta; Jezzard, Peter; Østergaard, Leif; MacIntosh, Bradley; Johansen-Berg, Heidi; Blicher, Jakob.

    2012. Abstract from ISMRM 2012, Melbourne, Australia.

    Research output: Research - peer-reviewConference abstract for conference

  45. 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: ResearchPoster

  46. 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: Research - peer-reviewJournal article

  47. 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: Research - peer-reviewJournal article

  48. Published

    Biased visualization of hypoperfused tissue by computed tomography due to short imaging duration : improved classification by image down-sampling and vascular models. / Mikkelsen, Irene Klærke; Jones, P Simon; Ribe, Lars Riisgaard; Alawneh, Josef; Puig, Josep; Bekke, Susanne Lise; Tietze, Anna; Gillard, Jonathan H; Warburton, Elisabeth A; Pedraza, Salva; Baron, Jean-Claude; Østergaard, Leif; Mouridsen, Kim.

    In: European Radiology, Vol. 25, No. 7, 01.07.2015, p. 2080-8.

    Research output: Research - peer-reviewJournal article

  49. 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: Research - peer-reviewJournal article

  50. Published

    Biomarkers in the brain after mTBI: A multimodal MRI study. / Næss-Schmidt, Erhard; Blicher, Jakob; Tietze, Anna; Eskildsen, Simon Fristed; Hansen, Brian; Lund, Torben Ellegaard; Østergaard, Leif; Nielsen, Jørgen Feldbæk.

    2014. Poster session presented at 8th World Congress for NeuroRehabilitation, Istanbul, Turkey.

    Research output: Research - peer-reviewPoster

  51. Published

    Blood pressure reduction does not reduce perihematoma oxygenation : a CT perfusion study. / Kate, Mahesh P; Hansen, Mikkel B; Mouridsen, Kim; Østergaard, Leif; Choi, Victor; Gould, Bronwen E; McCourt, Rebecca; Hill, Michael D; Demchuk, Andrew M; Coutts, Shelagh B; Dowlatshahi, Dariush; Emery, Derek J; Buck, Brian H; Butcher, Kenneth S.

    In: Journal of Cerebral Blood Flow and Metabolism, Vol. 34, No. 1, 03.01.2014, p. 81-86.

    Research output: Research - peer-reviewJournal article

  52. Published

    CBF and CBV measurements by USPIO bolus tracking: reproducibility and comparison with Gd-based values. / Simonsen, Claus Ziegler; Østergaard, Leif; Vestergaard-Poulsen, P; Røhl, L; Bjørnerud, A; Gyldensted, C.

    In: Journal of Magnetic Resonance Imaging, Vol. 9, No. 2, 1999, p. 342-7.

    Research output: Research - peer-reviewJournal article

  53. Published

    CT and MR perfusion can discriminate severe cerebral hypoperfusion from perfusion absence : evaluation of different commercial software packages by using digital phantoms. / Uwano, I; Kudo, Kohsuke; Sasaki, M; Christensen, Søren; Østergaard, Leif; Ogasawara, K; Ogawa, A.

    In: Neuroradiology, Vol. 54, No. 5, 01.05.2012, p. 467-74.

    Research output: Research - peer-reviewJournal article

  54. Published

    Capillary Dysfunction in Alzheimer's Disease. / Østergaard, Leif; Nagenthiraja, Kartheeban; Gyldensted, Louise; Rodell, Anders; Gyldensted, Carsten; Jespersen, Sune Nørhøj; Mouridsen, Kim; Brændgaard, Hans; West, Mark J.

    2013. Poster session presented at Alzheimer's Association International Conference, Boston, United States.

    Research output: Research - peer-reviewPoster

  55. Published

    Capillary Transit Time Heterogeneity Is Associated with Modified Rankin Scale Score at Discharge in Patients with Bilateral High Grade Internal Carotid Artery Stenosis. / Mundiyanapurath, Sibu; Ringleb, Peter Arthur; Diatschuk, Sascha; Hansen, Mikkel Bo; Mouridsen, Kim; Østergaard, Leif; Wick, Wolfgang; Bendszus, Martin; Radbruch, Alexander.

    In: PloS one, Vol. 11, No. 6, 2016, p. e0158148.

    Research output: Research - peer-reviewJournal article

  56. Published
  57. Published

    Capillary dysfunction in Alzheimer’s disease correlates with cognitive decline. / Eskildsen, Simon Fristed; Gyldensted, Louise; Nagenthiraja, Kartheeban; Hansen, Mikkel Bo; Dalby, Rikke Beese; Frandsen, Jesper; Rodell, Anders; Gyldensted, Carsten; Jespersen, Sune Nørhøj; Mouridsen, Kim; Brændgaard, Hans; Østergaard, Leif.

    2016. Abstract from 10th FENS FORUM of Neuroscience 2016, København, Denmark.

    Research output: Research - peer-reviewConference abstract for conference

  58. Published

    Capillary dysfunction in the development of diabetic peripheral neuropathy in animal models. / Dudele, Anete; Gutierrez, Eugenio; Iversen, Nina Kerting; Frische, Sebastian; Staehelin-Jensen, Troels; Østergaard, Leif.

    2017. 276-276 Abstract from 2017 PNS (Peripheral Nerve Society) Annual Meeting , Barcelona, Spain.

    Research output: ResearchConference abstract for conference

  59. Published
  60. Published
  61. Published
  62. Published

    Capillary transit time heterogeneity in the cerebrum correlate with cognitive decline in AD. / Eskildsen, Simon Fristed; Gyldensted, Louise; Nagenthiraja, Kartheeban; Hansen, Mikkel; Dalby, Rikke; Frandsen, Jesper; Rodell, Anders; Gyldensted, Carsten; Jespersen, Sune Nørhøj; Mouridsen, Kim; Brændgaard, Hans; Østergaard, Leif.

    2014.

    Research output: Research - peer-reviewConference abstract for conference

  63. 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: ResearchPoster

  64. Published
  65. Published
  66. Published

    Cerebral Hemodynamics in Human Acute Ischemic Stroke : A Study with Diffusion- and Perfusion-Weighted Magnetic Resonance Imaging and SPECT. / Liu, Y.; Karonen, J.O.; Vanninen, R.L.; Østergaard, Leif; Roivainen, R.; Nuutinen, J.; Perkiö, J.P.; Könönen, M.; Hämäläinen, A.; Vanninen, E.J.; Soimakallio, S.; Kuikka, J.T.; Aronen, H.J.

    In: Journal of Cerebral Blood Flow and Metabolism, Vol. 20, No. 6, 2000, p. 910-920.

    Research output: Research - peer-reviewJournal article

  67. Published
  68. Published

    Cerebral blood flow in volunteers measured by PET and Xe CT/CBF : A comparison. / Bergholt, Bo; Østergaard, Leif; Oettingen, Gorm von; Johannsen, P.; Poulsen, P.H.; Bundgaard, H.; Asboe, H.; Cold, Georg; Gjedde, Albert; Gyldensted, C.; Astrup, Jens.

    In: Keio Journal of Medicine, Vol. 49, No. Suppl 1, 2000, p. 55-57.

    Research output: ResearchJournal article

  69. Published

    Cerebral blood flow measurements by magnetic resonance imaging bolus tracking: comparison with [(15)O]H2O positron emission tomography in humans. / Østergaard, Leif; Johannsen, P; Høst-Poulsen, P; Vestergaard-Poulsen, P; Asboe, H; Gee, A D; Hansen, Søren Baarsgaard; Cold, G E; Gjedde, A; Gyldensted, C.

    In: Journal of Cerebral Blood Flow and Metabolism, Vol. 18, No. 9, 1998, p. 935-40.

    Research output: Research - peer-reviewJournal article

  70. Published

    Cerebral blood flow, blood volume and oxygen metabolism dynamics in human visual and motor cortex as measured by whole-brain multi-modal magnetic resonance imaging. / Donahue, Manus; Blicher, Jakob; Østergaard, Leif; Feinberg, David; MacIntosh, Bradley; Miller, Karla; Gunther, Matthias; Jezzard, Peter.

    In: Journal of Cerebral Blood Flow and Metabolism, Vol. 29, No. 11, 2009, p. 1856-1866.

    Research output: Research - peer-reviewJournal article

  71. Published

    Cerebral hemodynamics in CADASIL before and after acetazolamide challenge assessed with MRI bolus tracking. / Chabriat, H; Pappata, S; Østergaard, Leif; Clark, C A; Pachot-Clouard, M; Vahedi, K; Jobert, A; Le Bihan, D; Bousser, M G.

    In: Stroke, Vol. 31, No. 8, 2000, p. 1904-12.

    Research output: Research - peer-reviewJournal article

  72. Published

    Cerebral hemodynamics in a healthy population measured by dynamic susceptibility contrast MR imaging. / Helenius, J.; Perkio, J.; Soinne, L.; Østergaard, Leif; Carano, R.A.; Salonen, O.; Savolainen, S.; Kaste, M.; Aronen, H.J.; Tatlisumak, T.

    In: Acta Radiologica, Vol. 44, 2003, p. 538-546.

    Research output: ResearchJournal article

  73. 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: Research - peer-reviewJournal article

  74. Published

    Cerebral perfusion imaging by bolus tracking. / Østergaard, Leif.

    In: Topics in Magnetic Resonance Imaging, Vol. 15, No. 1, 2004, p. 3-9.

    Research output: ResearchJournal article

  75. Published

    Cerebral perfusion imaging by exogenous contrast agents. / Østergaard, Leif; Barker, P. (Editor); Gillard, J. (Editor); Waldman, A. (Editor).

    Clinical MR Neuroimaging. Cambridge University Press, 2004. p. 3327-3229.

    Research output: ResearchBook chapter

  76. Published

    Cerebral small vessel disease: Capillary pathways to stroke and cognitive decline. / Østergaard, Leif; Engedal, Thorbjørn Søndergaard; Moreton, Fiona ; Hansen, Mikkel Bo; Wardlaw, Joanna M.; Dalkara, Turgay; Markus, Hugh S; Muir, Keith W.

    In: Journal of Cerebral Blood Flow and Metabolism, Vol. 36, No. 2, 01.02.2016, p. 302-25.

    Research output: Research - peer-reviewJournal article

  77. Published

    Changes in Cerebral Blood Flow in Presymptomatic Mutation Carriers of Familial Frontotemporal Dementia (FTD-3), Measured with MRI. / Lunau, Line Andersen; Mouridsen, Kim; Rodell, Anders; Nielsen, Jørgen; Isaacs, Adrian; Brown, Jerry; Zeidler, Dora; Østergaard, Leif; Eskildsen, Simon Fristed; Englund, Elisabet; Johannsen, Peter.

    2010. Abstract from International Conference on Alzheimer's Disease, Honolulu, United States.

    Research output: Research - peer-reviewConference abstract for conference

  78. Published

    Changes in regional brain volume three months after stroke. / Brodtmann, Amy; Pardoe, Heath ; Li, Qi; Lichter, Renee; Østergaard, Leif; Cumming, Toby.

    In: Journal of the neurological sciences, Vol. 322, No. 1-2, 15.11.2012, p. 122-8.

    Research output: Research - peer-reviewJournal article

  79. 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: Research - peer-reviewJournal article

  80. 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: ResearchPaper

  81. 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: ResearchPoster

  82. Published

    Combined diffusion and perfusion MRI with correlation to single-photon emission CT in acute ischemic stroke. Ischemic penumbra predicts infarct growth. / Karonen, J O; Vanninen, R L; Liu, Y; Østergaard, Leif; Kuikka, J T; Nuutinen, J; Vanninen, E J; Partanen, P L; Vainio, P A; Korhonen, K; Perkiö, J; Roivainen, R; Sivenius, J; Aronen, H J.

    In: Stroke, Vol. 30, No. 8, 1999, p. 1583-90.

    Research output: Research - peer-reviewJournal article

  83. Published

    Combined diffusion-weighted and perfusion-weighted flow heterogeneity magnetic resonance imaging in acute stroke. / Østergaard, Leif; Sorensen, A G; Chesler, D A; Weisskoff, R M; Koroshetz, W J; Wu, O; Gyldensted, C; Rosen, B R.

    In: Stroke, Vol. 31, No. 5, 2000, p. 1097-103.

    Research output: Research - peer-reviewJournal article

  84. Published

    Combined perfusion- and diffusion-weighted MR imaging in acute ischemic stroke during the 1st week : a longitudinal study. / Karonen, J O; Liu, Y; Vanninen, R L; Østergaard, Leif; Kaarina Partanen, P L; Vainio, P A; Vanninen, E J; Nuutinen, J; Roivainen, R; Soimakallio, S; Kuikka, J T; Aronen, H J.

    In: Radiology, Vol. 217, No. 3, 2000, p. 886-94.

    Research output: Research - peer-reviewJournal article

  85. Published

    Combretastatin A-4 phosphate affects tumor vessel volume and size distribution as assessed using MRI-based vessel size imaging. / Nielsen, Thomas; Bentzen, Lise; Pedersen, Michael Nygaard; Tramm, Trine; Rijken, Paul F J W; Bussink, Johan; Horsman, Michael R; Østergaard, Leif.

    In: Clinical Cancer Research, Vol. 18, No. 23, 2012, p. 6469-77.

    Research output: Research - peer-reviewJournal article

  86. 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: ResearchPoster

  87. Published

    Comparing anesthesia with isoflurane and fentanyl/fluanisone/midazolam in a rat model of cardiac arrest. / Secher, Niels; Malte, Christian Lind; Tønnesen, Else; Østergaard, Leif; Granfeldt, Asger.

    In: Journal of Applied Physiology, 2016, p. jap.00998.2015.

    Research output: Research - peer-reviewJournal article

  88. 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: ResearchPaper

  89. Published

    Comparison of 10 Perfusion MRI Parameters in 97 Sub 6 Hour Stroke Patients using Voxel based Receiver Operating Characteristics Analysis. / Christensen, Søren; Mouridsen, Kim; Wu, Ona; Hjort, Niels; Karstoft, Henrik; Thomalla, Götz; Röther, Joachim; Fiehler, Jens; Kucinski, Thomas; Østergaard, Leif.

    In: Stroke, Vol. 40, No. 6, 2009, p. 2055-61.

    Research output: Research - peer-reviewJournal article

  90. Published

    Comparison of Gd-DTPA BMA and NC100150 Enhancement Patterns in C3H Mammary Carcinoma Bearing Mice. / Østergaard, Leif; Vestergaard-Poulsen, Peter; Bentzen, Lise Nørgaard; Horsman, M.R.; Overgaard, Jens; Bjørnerud, A.; Briley-Sæbø, K.; Gyldensted, C.

    Proc. Intl. Sot. Mag. Reson. Med. 8. 2000. p. 2019-2019.

    Research output: ResearchArticle in proceedings

  91. Published

    Comparison of gradient- and spin-echo imaging: CBF, CBV, and MTT measurements by bolus tracking. / Simonsen, Claus Ziegler; Østergaard, Leif; Smith, D F; Vestergaard-Poulsen, P; Gyldensted, C.

    In: Journal of Magnetic Resonance Imaging, Vol. 12, No. 3, 2000, p. 411-6.

    Research output: Research - peer-reviewJournal article

  92. Published

    Concrete spatial language : see what I mean? / Wallentin, Mikkel; Østergaard, Svend; Lund, Torben Ellegaard; Østergaard, Leif; Roepstorff, Andreas.

    In: Brain and Language, Vol. 92, No. 3, 2005, p. 221-33.

    Research output: Research - peer-reviewJournal article

  93. 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: ResearchPoster

  94. Published

    Contrast agents in functional MR imaging. / Sorensen, A G; Tievsky, A L; Østergaard, Leif; Weisskoff, R M; Rosen, B R.

    In: Journal of Magnetic Resonance Imaging, Vol. 7, No. 1, 1997, p. 47-55.

    Research output: Research - peer-reviewJournal article

  95. Published
  96. Published

    Correlations between Stroop task performance and white matter lesion measures in late-onset major depression. / Dalby, Rikke Beese; Frandsen, Jesper; Mallar, Chakravarty; Ahdidan, Jamila; Sørensen, Leif; Rosenberg, Raben; Østergaard, Leif; Videbech, Poul.

    In: Psychiatry Research, Vol. 202, No. 2, 2012, p. 142-149.

    Research output: Research - peer-reviewJournal article

  97. Published

    Cortical Spreading Depolarizations after Cardiac Arrest in an Asphyxial Rat Model. / Hansen, Frederik Boe; Secher, Niels; Jensen, Morten Skovgaard; Østergaard, Leif; Tønnesen, Else Kirstine; Granfeldt, Asger.

    2015. Poster session presented at American Heart Association Scientific Sessions, Orlando, United States.

    Research output: Research - peer-reviewPoster

  98. Published

    Cortical capillary dysfunction in patients suspected of Alzheimer’s disease. / Eskildsen, Simon Fristed; Gyldensted, Louise; Nagenthiraja, Kartheeban; Hansen, Mikkel Bo; Dalby, Rikke Beese; Frandsen, Jesper; Rodell, Anders; Gyldensted, Carsten; Jespersen, Sune Nørhøj; Mouridsen, Kim; Brændgaard, Hans; Østergaard, Leif.

    2015. Abstract from The Alzheimer's Association International Conference 2015, Washington D.C., United States.

    Research output: Research - peer-reviewConference abstract for conference

  99. Published
  100. Published

    Cortical volumes and atrophy rates in FTD-3 CHMP2B mutation carriers and related non-carriers. / Fristed Eskildsen, Simon; Riis Østergaard, Lasse; Rodell, Anders; Østergaard, Leif; Nielsen, Jørgen Erik; Isaacs, Adrian M.; Johannsen, Peter.

    In: NeuroImage, Vol. 45, No. 3, 2009, p. 713-21.

    Research output: Research - peer-reviewJournal article

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