Works by Østergaard, Leif

Results: 144

Time evolution of cerebral perfusion and apparent diffusion coefficient measured by magnetic resonance imaging in a porcine stroke model.

Published in:

2002

By:

Røhl, Lisbeth;
Sakoh, Masaharuh;
Simonsen, Claus Ziegler;
Vestergaard-Poulsen, Peter;
Sangill, Ryan;
Sørensen, Jens Cristian;
Bjarkam, Carsten Reidies;
Gyldensted, Carsten;
Østergaard, Leif;
Røhl, Lisbeth;
Sørensen, Jens Cristian;
Østergaard, Leif

Publication type:

journal article

Reliable estimation of microvascular flow patterns in patients with disrupted blood-brain barrier using dynamic susceptibility contrast MRI.

Published in:

2017

By:

Hansen, Mikkel Bo;
Tietze, Anna;
Kalpathy‐Cramer, Jayashree;
Gerstner, Elizabeth R.;
Batchelor, Tracy T.;
Østergaard, Leif;
Mouridsen, Kim;
Kalpathy-Cramer, Jayashree;
Østergaard, Leif

Publication type:

journal article

Cerebral proteome adaptations to amyloid angiopathy are prevented by carbonic anhydrase inhibitors.

Published in:

Alzheimer's & Dementia: The Journal of the Alzheimer's Association, 2025, v. 21, n. 4, p. 1, doi. 10.1002/alz.70122

By:

Carlsen, Jasper;
Fossati, Silvia;
Østergaard, Leif;
Gutiérrez‐Jiménez, Eugenio;
Palmfeldt, Johan

Publication type:

Article

Letter to the Editor: A rejoinder to Grool et al. ().

Published in:

2011

By:

DALBY, RIKKE B.;
ROSENBERG, RABEN;
ØSTERGAARD, LEIF;
VIDEBECH, POUL

Publication type:

Letter

Arterial stiffness and progression of cerebral white matter lesions in asymptomatic patients with type 2 diabetes and matched controls: A 5-year cohort study.

Published in:

Artery Research, 2017, v. 20, p. 102, doi. 10.1016/j.artres.2017.10.171

By:

Funck, Kristian Løkke;
Laugesen, Esben;
Høyem, Pernille;
Stausbøll-Grøn, Brian;
Kim, Won;
Østergaard, Leif;
Zeidler, Dora;
Hansen, Troels Krarup;
Poulsen, Per Løgstrup

Publication type:

Article

Hypoparathyroidism: changes in brain structure, cognitive impairment, and reduced quality of life.

Published in:

Journal of Bone & Mineral Research, 2024, v. 39, n. 7, p. 855, doi. 10.1093/jbmr/zjae063

By:

Sikjaer, Tanja;
Eskildsen, Simon Fristed;
Underbjerg, Line;
Østergaard, Leif;
Rejnmark, Lars;
Evald, Lars

Publication type:

Article

Changes in cerebral blood flow in presymptomatic mutation Carriers of Familial Frontotemporal Dementia (FTD-3), Measured with MRI

Published in:

2010

By:

Lunau, Line;
Mouridsen, Kim;
Rodell, Anders;
Nielsen, Jørgen E.;
Isaacs, Adrian;
Brown, Jerry;
Zeidler, Dora;
Østergaard, Leif;
Eskildsen, Simon F.;
Englund, Elisabet;
Johannsen, Peter

Publication type:

Abstract

P2-186: Accelerated cortical thinning in FTD-3 CHMP2B mutation carriers

Published in:

2008

By:

Johannsen, Peter;
Eskildsen, Simon F.;
Nielsen, Jørgen E.;
Isaacs, Adrian;
Zeidler, Dora;
Østergaard, Leif

Publication type:

Abstract

IC-P3-187: Accelerated cortical thinning in FTD-3 CHMP2B mutation carriers

Published in:

2008

By:

Johannsen, Peter;
Eskildsen, Simon F.;
Nielsen, Jørgen E.;
Isaacs, Adrian;
Zeidler, Dora;
Østergaard, Leif

Publication type:

Abstract

IC-P-072: Contrast bolus magnetic resonance imaging in Alzheimer’s disease and mild cognitive impairment

Published in:

2006

By:

Gyldensted, Louise;
Mouridsen, Kim;
Rodell, Anders;
Østergaard, Leif;
Gyldensted, Carsten

Publication type:

Abstract

IC-P-034: Brain cortical thickness in an FTD3 patient and mutation carriers

Published in:

2006

By:

Johannsen, Peter;
Eskildsen, Simon F.;
Nielsen, Jørgen;
Fisher, Elizabeth;
Zeidler, Dora;
Rodell, Anders;
Østergaard, Leif

Publication type:

Abstract

P2-354: Contrast bolus magnetic resonance imaging in Alzheimer’s disease and mild cognitive impairment

Published in:

2006

By:

Gyldensted, Louise;
Mouridsen, Kim;
Rodell, Anders;
Østergaard, Leif;
Gyldensted, Carsten

Publication type:

Abstract

O1-04-02: Brain cortical thickness in an FTD3 patient and mutation carriers

Published in:

2006

By:

Johannsen, Peter;
Eskildsen, Simon F.;
Nielsen, Jørgen;
Fisher, Elizabeth;
Zeidler, Dora;
Rodell, Anders;
Østergaard, Leif

Publication type:

Abstract

IC-P-072: Contrast bolus magnetic resonance imaging in Alzheimer’s disease and mild cognitive impairment

Published in:

2006

By:

Gyldensted, Louise;
Mouridsen, Kim;
Rodell, Anders;
Østergaard, Leif;
Gyldensted, Carsten

Publication type:

Abstract

IC-P-034: Brain cortical thickness in an FTD3 patient and mutation carriers

Published in:

2006

By:

Johannsen, Peter;
Eskildsen, Simon F.;
Nielsen, Jørgen;
Fisher, Elizabeth;
Zeidler, Dora;
Rodell, Anders;
Østergaard, Leif

Publication type:

Abstract

P2-354: Contrast bolus magnetic resonance imaging in Alzheimer’s disease and mild cognitive impairment

Published in:

2006

By:

Gyldensted, Louise;
Mouridsen, Kim;
Rodell, Anders;
Østergaard, Leif;
Gyldensted, Carsten

Publication type:

Abstract

O1-04-02: Brain cortical thickness in an FTD3 patient and mutation carriers

Published in:

2006

By:

Johannsen, Peter;
Eskildsen, Simon F.;
Nielsen, Jørgen;
Fisher, Elizabeth;
Zeidler, Dora;
Rodell, Anders;
Østergaard, Leif

Publication type:

Abstract

Statin Therapy and Risk of Polyneuropathy in Type 2 Diabetes: A Danish Cohort Study.

Published in:

2020

By:

Kristensen, Frederik P.;
Christensen, Diana H.;
Callaghan, Brian C.;
Kahlert, Johnny;
Knudsen, Søren T.;
Sindrup, Søren H.;
Feldman, Eva L.;
Østergaard, Leif;
Andersen, Henning;
Jensen, Troels S.;
Sørensen, Henrik T.;
Thomsen, Reimar W.

Publication type:

journal article

Exploring vascular contributions to cognitive impairment and dementia (ENIGMA): protocol for a prospective observational study.

Published in:

BMC Neurology, 2024, v. 24, n. 1, p. 1, doi. 10.1186/s12883-024-03601-7

By:

Vestergaard, Sigrid Breinholt;
Damsbo, Andreas Gammelgaard;
Pedersen, Niels Lech;
Zachariassen, Katrine;
Drasbek, Kim Ryun;
Østergaard, Leif;
Andersen, Grethe;
Dalby, Rikke Beese;
Mortensen, Janne Kærgård

Publication type:

Article

Model-based inference from microvascular measurements: Combining experimental measurements and model predictions using a Bayesian probabilistic approach.

Published in:

Microcirculation, 2017, v. 24, n. 4, p. n/a, doi. 10.1111/micc.12343

By:

Rasmussen, Peter M.;
Smith, Amy F.;
Sakadžić, Sava;
Boas, David A.;
Pries, Axel R.;
Secomb, Timothy W.;
Østergaard, Leif

Publication type:

Article

Preserved Cerebral Microcirculation After Cardiac Arrest in a Rat Model.

Published in:

Microcirculation, 2015, v. 22, n. 6, p. 464, doi. 10.1111/micc.12217

By:

Secher, Niels;
Østergaard, Leif;
Iversen, Nina K.;
Lambertsen, Kate L.;
Clausen, Bettina H.;
Tønnesen, Else;
Granfeldt, Asger

Publication type:

Article

Comparison of classification methods for tissue outcome after ischaemic stroke.

Published in:

European Journal of Neuroscience, 2019, v. 50, n. 10, p. 3590, doi. 10.1111/ejn.14507

By:

Tozlu, Ceren;
Ozenne, Brice;
Cho, Tae‐Hee;
Nighoghossian, Norbert;
Mikkelsen, Irene Klærke;
Derex, Laurent;
Hermier, Marc;
Pedraza, Salvador;
Fiehler, Jens;
Østergaard, Leif;
Berthezène, Yves;
Baron, Jean‐Claude;
Maucort‐Boulch, Delphine

Publication type:

Article

Individualized quantification of the benefit from reperfusion therapy using stroke predictive models.

Published in:

European Journal of Neuroscience, 2019, v. 50, n. 8, p. 3251, doi. 10.1111/ejn.14505

By:

Ozenne, Brice;
Cho, Tae‐Hee;
Mikkelsen, Irene Klærke;
Hermier, Marc;
Thomalla, Götz;
Pedraza, Salvador;
Roy, Pascal;
Berthezène, Yves;
Nighoghossian, Norbert;
Østergaard, Leif;
Baron, Jean‐Claude;
Maucort‐Boulch, Delphine

Publication type:

Article

Hippocampal Atrophy Following Subarachnoid Hemorrhage Correlates with Disruption of Astrocyte Morphology and Capillary Coverage by AQP4.

Published in:

Frontiers in Cellular Neuroscience, 2018, p. 1, doi. 10.3389/fncel.2018.00019

By:

Anzabi, Maryam;
Ardalan, Maryam;
Iversen, Nina K.;
Rafati, Ali H.;
Hansen, Brian;
Østergaard, Leif

Publication type:

Article

Pericytes in the brain and heart: functional roles and response to ischaemia and reperfusion.

Published in:

Cardiovascular Research, 2024, v. 120, n. 18, p. 2336, doi. 10.1093/cvr/cvae147

By:

Dalkara, Turgay;
Østergaard, Leif;
Heusch, Gerd;
Attwell, David

Publication type:

Article

Spatial distribution of malignant tissue in gliomas: correlations of 11C-L-methionine positron emission tomography and perfusion- and diffusion-weighted magnetic resonance imaging.

Published in:

Acta Radiologica, 2015, v. 56, n. 9, p. 1135, doi. 10.1177/0284185114550020

By:

Tietze, Anna;
Boldsen, Jens K.;
Mouridsen, Kim;
Ribe, Lars;
Dyve, Suzan;
Cortnum, Søren;
Østergaard, Leif;
Borghammer, Per

Publication type:

Article

Ischemic injury detected by diffusion imaging 11 minutes after stroke.

Published in:

Annals of Neurology, 2005, v. 58, n. 3, p. 462

By:

Niels Hjort;
Søren Christensen;
Christine Sølling;
Mahmoud Ashkanian;
Ona Wu;
Lisbeth Røhl;
Carsten Gyldensted;
Grethe Andersen;
Leif Østergaard

Publication type:

Article

Perfusion-weighted imaging defects during spontaneous migrainous aura.

Published in:

Annals of Neurology, 1998, v. 43, n. 1, p. 25, doi. 10.1002/ana.410430108

By:

Cutrer, F. Michael;
Sorensen, A. Gregory;
Weisskoff, Robert M.;
Østergaard, Leif;
Del Rio, Margarita Sanchez;
Lee, E. John;
Rosen, Bruce R.;
Moskowitz, Michael A.

Publication type:

Article

Analysis of partial volume effects on arterial input functions using gradient echo: A simulation study.

Published in:

Magnetic Resonance in Medicine, 2009, v. 61, n. 6, p. 1300, doi. 10.1002/mrm.21849

By:

Kjølby, Birgitte F.;
Mikkelsen, Irene K.;
Pedersen, Michael;
Østergaard, Leif;
Kiselev, Valerij G.

Publication type:

Article

Automatic selection of arterial input function using cluster analysis.

Published in:

Magnetic Resonance in Medicine, 2006, v. 55, n. 3, p. 524, doi. 10.1002/mrm.20759

By:

Mouridsen, Kim;
Christensen, Søren;
Gyldensted, Louise;
Østergaard, Leif

Publication type:

Article

Effects of tracer arrival time on flow estimates in MR perfusion-weighted imaging.

Published in:

Magnetic Resonance in Medicine, 2003, v. 50, n. 4, p. 856, doi. 10.1002/mrm.10610

By:

Ona Wu;
Leif Østergaard;
Walter J. Koroshetz;
Lee H. Schwamm;
Joanie O'Donnell;
Pamela W. Schaefer;
Bruce R. Rosen;
Robert M. Weisskoff

Publication type:

Article

Tracer arrival timing-insensitive technique for estimating flow in MR perfusion-weighted imaging using singular value decomposition with a block-circulant deconvolution matrix.

Published in:

Magnetic Resonance in Medicine, 2003, v. 50, n. 1, p. 164, doi. 10.1002/mrm.10522

By:

Ona Wu;
Leif Østergaard;
Robert M. Weisskoff;
Thomas Benner;
Bruce R. Rosen;
A. Gregory Sorensen

Publication type:

Article

Evaluation of four postprocessing methods for determination of cerebral blood volume and mean transit time by dynamic susceptibility contrast imaging.

Published in:

Magnetic Resonance in Medicine, 2002, v. 47, n. 5, p. 973, doi. 10.1002/mrm.10126

By:

Perkiö, Jussi;
Aronen, Hannu J.;
Kangasmäki, Aki;
Liu, Yawu;
Karonen, Jari;
Savolainen, Sauli;
Østergaard, Leif

Publication type:

Article

High resolution measurement of cerebral blood flow using intravascular tracer bolus passages. Part II: Experimental comparison and preliminary results.

Published in:

Magnetic Resonance in Medicine, 1996, v. 36, n. 5, p. 726, doi. 10.1002/mrm.1910360511

By:

Østergaard, Leif;
Sorensen, Alma Gregory;
Kwong, Kenneth K.;
Weisskoff, Robert M.;
Gyldensted, Carsten;
Rosen, Bruce R.

Publication type:

Article

High resolution measurement of cerebral blood flow using intravascular tracer bolus passages. Part I: Mathematical approach and statistical analysis.

Published in:

Magnetic Resonance in Medicine, 1996, v. 36, n. 5, p. 715, doi. 10.1002/mrm.1910360510

By:

Østergaard, Leif;
Weisskoff, Robert M.;
Chesler, David A.;
Gyldensted, Carsten;
Rosen, Bruce R.

Publication type:

Article

Perfusion and pH MRI in familial hemiplegic migraine with prolonged aura.

Published in:

2016

By:

Blicher, Jakob Udby;
Tietze, Anna;
Donahue, Manus J.;
Smith, Seth A.;
Østergaard, Leif

Publication type:

journal article

Capillary Transit Time Heterogeneity Is Associated with Modified Rankin Scale Score at Discharge in Patients with Bilateral High Grade Internal Carotid Artery Stenosis.

Published in:

PLoS ONE, 2016, v. 11, n. 6, p. 1, doi. 10.1371/journal.pone.0158148

By:

Mundiyanapurath, Sibu;
Ringleb, Peter Arthur;
Diatschuk, Sascha;
Hansen, Mikkel Bo;
Mouridsen, Kim;
Østergaard, Leif;
Wick, Wolfgang;
Bendszus, Martin;
Radbruch, Alexander

Publication type:

Article

Cerebral metabolic response to low blood flow: possible role of cytochrome oxidase inhibition.

Published in:

Journal of Cerebral Blood Flow & Metabolism, 2005, v. 25, n. 9, p. 1183, doi. 10.1038/sj.jcbfm.9600113

By:

Gjedde, Albert;
Johannsen, Peter;
Cold, Georg E.;
Østergaard, Leif

Publication type:

Article

Cerebral Hemodynamics in Human Acute Ischemic Stroke: A Study With Diffusion- and Perfusion-Weighted Magnetic Resonance Imaging and SPECT.

Published in:

Journal of Cerebral Blood Flow & Metabolism, 2000, v. 20, n. 6, p. 910, doi. 10.1097/00004647-200006000-00003

By:

Liu, Yawu;
Karonen, Jari O;
Vanninen, Ritva L;
Østergaard, Leif;
Roivainen, Reina;
Nuutinen, Juho;
Perkiö, Jussi;
Könönen, Mervi;
Hämäläinen, Anne;
Vanninen, Esko J;
Soimakallio, Seppo;
Kuikka, Jyrki T;
Aronen, Hannu J

Publication type:

Article

Modeling Cerebral Blood Flow and Flow Heterogeneity From Magnetic Resonance Residue Data.

Published in:

Journal of Cerebral Blood Flow & Metabolism, 1999, v. 19, n. 6, p. 690, doi. 10.1097/00004647-199906000-00013

By:

Østergaard, Leif;
Chesler, David A;
Weisskoff, Robert M;
Sorensen, A Gregory;
Rosen, Bruce R

Publication type:

Article

Cerebral Blood Flow Measurements by Magnetic Resonance Imaging Bolus Tracking: Comparison With [15O]H2O Positron Emission Tomography in Humans.

Published in:

Journal of Cerebral Blood Flow & Metabolism, 1998, v. 18, n. 9, p. 935, doi. 10.1097/00004647-199809000-00002

By:

Østergaard, Leif;
Johannsen, Peter;
Høst-Poulsen, Peter;
Vestergaard-Poulsen, Peter;
Asboe, Helle;
Gee, Antony D;
Hansen, Søren B;
Cold, Georg E;
Gjedde, Albert;
Gyldensted, Carsten

Publication type:

Article

Absolute Cerebral Blood Flow and Blood Volume Measured by Magnetic Resonance Imaging Bolus Tracking: Comparison With Positron Emission Tomography Values.

Published in:

Journal of Cerebral Blood Flow & Metabolism, 1998, v. 18, n. 4, p. 425, doi. 10.1097/00004647-199804000-00011

By:

Østergaard, Leif;
Smith, Donald F;
Vestergaard-Poulsen, Peter;
Hansen, Søren B;
Gee, Antony D;
Gjedde, Albert;
Gyldensted, Carsten

Publication type:

Article

Inferring origin of vascular supply from tracer arrival timing patterns using bolus tracking MRI.

Published in:

Journal of Magnetic Resonance Imaging, 2008, v. 27, n. 6, p. 1371, doi. 10.1002/jmri.21386

By:

Christensen, Søren;
Calamante, Fernando;
Hjort, Niels;
Wu, Ona;
Blankholm, Anne Dorte;
Desmond, Patricia;
Davis, Stephen;
Østergaard, Leif

Publication type:

Article

Microstructural changes in ischemic cortical gray matter predicted by a model of diffusion-weighted MRI.

Published in:

Journal of Magnetic Resonance Imaging, 2007, v. 26, n. 3, p. 529, doi. 10.1002/jmri.21030

By:

Vestergaard-Poulsen, Peter;
Hansen, Brian;
Østergaard, Leif;
Jakobsen, Rikke

Publication type:

Article

Principles of cerebral perfusion imaging by bolus tracking.

Published in:

Journal of Magnetic Resonance Imaging, 2005, v. 22, n. 6, p. 710, doi. 10.1002/jmri.20460

By:

Østergaard, Leif

Publication type:

Article

Quantitative cerebral perfusion using the PRESTO acquisition scheme.

Published in:

Journal of Magnetic Resonance Imaging, 2004, v. 20, n. 6, p. 930, doi. 10.1002/jmri.20206

By:

Pedersen, Michael;
Klarhöfer, Markus;
Christensen, Søren;
Ouallet, Jean-Christophe;
Østergaard, Leif;
Dousset, Vincent;
Moonen, Chrit

Publication type:

Article

Comparison of gradient- and spin-echo imaging: CBF, CBV, and MTT measurements by bolus tracking.

Published in:

2000

By:

Simonsen, Claus Z.;
Østergaard, Leif;
Smith, Donald F.;
Vestergaard-Poulsen, Peter;
Gyldensted, Carsten;
Simonsen, C Z;
Ostergaard, L;
Smith, D F;
Vestergaard-Poulsen, P;
Gyldensted, C

Publication type:

journal article

CBF and CBV measurements by USPIO bolus tracking: reproducibility and comparison with Gd-based values.

Published in:

1999

By:

Simonsen, Claus Z.;
Østergaard, Leif;
Vestergaard-Poulsen, Peter;
Røhl, Lisbeth;
Bjørnerud, Atle;
Gyldensted, Carsten;
Simonsen, C Z;
Ostergaard, L;
Vestergaard-Poulsen, P;
Røhl, L;
Bjørnerud, A;
Gyldensted, C

Publication type:

journal article

The effects of capillary dysfunction on oxygen and glucose extraction in diabetic neuropathy.

Published in:

Diabetologia, 2015, v. 58, n. 4, p. 666, doi. 10.1007/s00125-014-3461-z

By:

Østergaard, Leif;
Finnerup, Nanna;
Terkelsen, Astrid;
Olesen, Rasmus;
Drasbek, Kim;
Knudsen, Lone;
Jespersen, Sune;
Frystyk, Jan;
Charles, Morten;
Thomsen, Reimar;
Christiansen, Jens;
Beck-Nielsen, Henning;
Jensen, Troels;
Andersen, Henning

Publication type:

Article

A semi-automatic method for extracting mitochondrial cristae characteristics from 3D focused ion beam scanning electron microscopy data.

Published in:

Communications Biology, 2024, v. 7, n. 1, p. 1, doi. 10.1038/s42003-024-06045-4

By:

Wang, Chenhao;
Østergaard, Leif;
Hasselholt, Stine;
Sporring, Jon

Publication type:

Article