Karen Østergaard

Best Publications

• The natural history of multiple system atrophy: a prospective European cohort study

  Gregor K Wenning;Felix Geser;Felix Geser;Florian Krismer;Klaus Seppi

  590
  Citations

• Presentation, diagnosis, and management of multiple system atrophy in Europe: Final analysis of the European multiple system atrophy registry

  Martin Köllensperger;Felix Geser;Jean Pierre Ndayisaba;Sylvia Boesch

  303
  Citations

• Estimation of the number of somatostatin neurons in the striatum: an in situ hybridization study using the optical fractionator method.

  Mark J. West;Karen Østergaard;Ole A. Andreassen;Bente Finsen

  296
  Citations

• Red flags for multiple system atrophy

  Martin Köllensperger;Felix Geser;Klaus Seppi;Michaela Stampfer-Kountchev

  274
  Citations

• Effects of bilateral stimulation of the subthalamic nucleus in patients with severe Parkinson's disease and motor fluctuations.

  Karen Østergaard;Niels Sunde;Erik Dupont

  259
  Citations

• Living with advanced Parkinson's disease: a constant struggle with unpredictability.

  Anita Haahr;Marit Kirkevold;Elisabeth O.C. Hall;Karen Østergaard

  209
  Citations

• Assessment of neuroinflammation in patients with idiopathic rapid-eye-movement sleep behaviour disorder: a case-control study

  Morten Gersel Stokholm;Alex Iranzo;Karen Østergaard;Mónica Serradell

  208
  Citations

• Evolution of Parkinson's disease during 4 years of bilateral deep brain stimulation of the subthalamic nucleus

  Karen Østergaard;Niels Aa. Sunde

  185
  Citations

• Selecting deep brain stimulation or infusion therapies in advanced Parkinson’s disease: an evidence-based review

  Jens Volkmann;Alberto Albanese;Angelo Antonini;K. Ray Chaudhuri

  184
  Citations

• NMDA and kainate-evoked release of nitric oxide and classical transmitters in the rat striatum: in vivo evidence that nitric oxide may play a neuroprotective role.

  Keith M. Kendrick;Rosalinda Guevara-Guzman;Carlos de la Riva;Jakob Christensen

  175
  Citations

• Progression of multiple system atrophy (MSA): A prospective natural history study by the European MSA study group (EMSA SG)

  Felix Geser;Gregor K. Wenning;Klaus Seppi;Michaela Stampfer‐Kountchev

  168
  Citations

• Haplotypes and Gene Expression Implicate the Mapt Region for Parkinson Disease: the GenePD Study

  J. E. Tobin;J. E. Tobin;J. C. Latourelle;M. F. Lew;C. Klein

  154
  Citations

• Health-related quality of life in multiple system atrophy

  Anette Schrag;Felix Geser;Michaela Stampfer-Kountchev;Klaus Seppi

  133
  Citations

• In vivo imaging of neuromelanin in Parkinson's disease using 18F-AV-1451 PET

  Allan Kjeldsen Hansen;Karoline Knudsen;Thea P Lillethorup;Anne M Landau

  133
  Citations

• Health-related quality of life in patients with advanced Parkinson's Disease treated with deep brain stimulation of the subthalamic nuclei

  Helle Just;Karen Ostergaard

  130
  Citations

• Probabilistic versus deterministic tractography for delineation of the cortico-subthalamic hyperdirect pathway in patients with Parkinson disease selected for deep brain stimulation

  Mikkel V. Petersen;Torben E. Lund;Niels Sunde;Jesper Frandsen

  128
  Citations

• Improved asymmetry of gait in Parkinson's disease with DBS: gait and postural instability in Parkinson's disease treated with bilateral deep brain stimulation in the subthalamic nucleus.

  Erik L. Johnsen;Poul H. Mogensen;Niels Aa. Sunde;Karen Østergaard

  122
  Citations

• A deformation-based morphometry study of patients with early-stage Parkinson's disease.

  P. Borghammer;K. Østergaard;P. Cumming;A. Gjedde

  120
  Citations

• Normalization in PET group comparison studies--the importance of a valid reference region.

  Per Borghammer;Kristjana Yr Jonsdottir;Paul Cumming;Karen Ostergaard

  113
  Citations

• Improvement of sleep quality in patients with advanced Parkinson's disease treated with deep brain stimulation of the subthalamic nucleus.

  Niels Hjort;Karen Østergaard;Erik Dupont

  109
  Citations

• Myoclonus‐dystonia due to genomic deletions in the epsilon‐sarcoglycan gene

  Friedrich Asmus;Farid Salih;Lena Elisabeth Hjermind;Karen Ostergaard

  99
  Citations