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A. Ostwaldt · SciRah

Researcher profile · Semantic Scholar

A. Ostwaldt

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A. Ostwaldt — researcher profile on SciRah

h-index: 18
Works: 44
Citations: 1,033

Most-cited papers

Safety and efficacy of intravenous glyburide on brain swelling after large hemispheric infarction (GAMES-RP): a randomised, double-blind, placebo-controlled phase 2 trial.
Kevin N. Sheth, Jordan Elm, Bradley J. Molyneaux, H. Hinson +7 more
2016Lancet Neurology207 citations
Semantic Scholar
DCE-MRI blood–brain barrier assessment in acute ischemic stroke
K. Villringer, B. Sanz-Cuesta, A. Ostwaldt, U. Grittner +6 more
2017Neurology98 citations
Semantic Scholar
Global and regional annual brain volume loss rates in physiological aging
S. Schippling, A. Ostwaldt, P. Suppa, L. Spies +4 more
2017Journal of Neurology84 citations
Semantic Scholar
Fully automated longitudinal segmentation of new or enlarged multiple sclerosis lesions using 3D convolutional neural networks
J. Krüger, R. Opfer, N. Gessert, A. Ostwaldt +4 more
2020NeuroImage: Clinical67 citations Open access
Semantic Scholar
Reperfusion after ischemic stroke is associated with reduced brain edema
Hannah J. Irvine, A. Ostwaldt, M. Bevers, Simone Dixon +9 more
2017Journal of Cerebral Blood Flow and Metabolism56 citations Open access
Semantic Scholar
Multiple Sclerosis Lesion Activity Segmentation with Attention-Guided Two-Path CNNs
N. Gessert, J. Krüger, R. Opfer, A. Ostwaldt +4 more
2020Comput. Medical Imaging Graph.54 citations Open access
Semantic Scholar
Relationship Between Changes in the Temporal Dynamics of the Blood-Oxygen-Level-Dependent Signal and Hypoperfusion in Acute Ischemic Stroke
A. Khalil, A. Ostwaldt, T. Nierhaus, R. Ganeshan +4 more
2017Stroke44 citations Open access
Semantic Scholar
Estimates of age-dependent cutoffs for pathological brain volume loss using SIENA/FSL-a longitudinal brain volumetry study in healthy adults.
R. Opfer, A. Ostwaldt, M. Sormani, C. Gocke +4 more
2017Neurobiology of Aging33 citations Open access
Semantic Scholar
Automatic segmentation of the thalamus using a massively trained 3D convolutional neural network: higher sensitivity for the detection of reduced thalamus volume by improved inter-scanner stability
R. Opfer, J. Krüger, L. Spies, A. Ostwaldt +3 more
2022European Radiology31 citations Open access
Semantic Scholar
Early neurological stability predicts adverse outcome after acute ischemic stroke
Hannah J. Irvine, Thomas W. K. Battey, A. Ostwaldt, Bruce C. V. Campbell +4 more
2016International Journal of Stroke31 citations Open access
Semantic Scholar
Early Time Course of FLAIR Signal Intensity Differs between Acute Ischemic Stroke Patients with and without Hyperintense Acute Reperfusion Marker
A. Ostwaldt, M. Rozanski, W. Schmidt, C. Nolte +4 more
2014Cerebrovascular Diseases31 citations
Semantic Scholar
Comparative Analysis of Markers of Mass Effect after Ischemic Stroke
A. Ostwaldt, Thomas W. K. Battey, Hannah J. Irvine, Bruce C. V. Campbell +3 more
2018Journal of Neuroimaging26 citations Open access
Semantic Scholar
Fully Automated Postprocessing Carries a Risk of Substantial Overestimation of Perfusion Deficits in Acute Stroke Magnetic Resonance Imaging
I. Galinovic, P. Brunecker, A. Ostwaldt, Carina Soemmer +2 more
2011Cerebrovascular Diseases24 citations
Semantic Scholar
Within-patient fluctuation of brain volume estimates from short-term repeated MRI measurements using SIENA/FSL
R. Opfer, A. Ostwaldt, Christine Walker-Egger, P. Manogaran +3 more
2018Journal of Neurology23 citations
Semantic Scholar
Apparent diffusion coefficient signal intensity ratio predicts the effect of revascularization on ischemic cerebral edema
M. Bevers, Thomas W. K. Battey, A. Ostwaldt, R. Jahan +3 more
2018Cerebrovascular Diseases21 citations Open access
Semantic Scholar
MRI-Based Brain Volumetry at a Single Time Point Complements Clinical Evaluation of Patients With Multiple Sclerosis in an Outpatient Setting
Alaleh Raji, A. Ostwaldt, R. Opfer, P. Suppa +2 more
2018Frontiers in Neurology19 citations Open access
Semantic Scholar
The Potential of Microvessel Density in Prediction of Infarct Growth: A Two-Month Experimental Study in Vessel Size Imaging
Chao Xu, W. Schmidt, I. Galinovic, K. Villringer +6 more
2012Cerebrovascular Diseases19 citations Open access
Semantic Scholar
Search for a Map and Threshold in Perfusion MRI to Accurately Predict Tissue Fate: A Protocol for Assessing Lesion Growth in Patients with Persistent Vessel Occlusion
I. Galinovic, A. Ostwaldt, Carina Soemmer, Helena Bros +5 more
2011Cerebrovascular Diseases19 citations
Semantic Scholar
Infratentorial lesions in multiple sclerosis patients: intra- and inter-rater variability in comparison to a fully automated segmentation using 3D convolutional neural networks
J. Krüger, A. Ostwaldt, L. Spies, Benjamin P. Geisler +4 more
2021European Radiology18 citations
Semantic Scholar
Clinical and Radiological Courses Do Not Differ Between Fluid-Attenuated Inversion Recovery-Positive and Negative Patients With Stroke After Thrombolysis
M. Ebinger, A. Ostwaldt, I. Galinovic, M. Rozanski +4 more
2010Stroke17 citations Open access
Semantic Scholar
Reliability of Two Diameters Method in Determining Acute Infarct Size. Validation as New Imaging Biomarker
J. Fiebach, Jonas D. Stief, R. Ganeshan, B. Hotter +3 more
2015PLoS ONE16 citations Open access
Semantic Scholar
Hyperintense acute reperfusion marker is associated with higher contrast agent dosage in acute ischaemic stroke
A. Ostwaldt, M. Rozanski, Tabea C. Schaefer, M. Ebinger +3 more
2015European Radiology16 citations
Semantic Scholar
Challenges in Joining Aluminium with Copper for Applications in Electro Mobility
J. Kaspar, M. Zimmermann, A. Ostwaldt, G. Goebel +2 more
201416 citations Open access
Semantic Scholar
4D Deep Learning for Multiple Sclerosis Lesion Activity Segmentation
N. Gessert, M. Bengs, J. Krüger, R. Opfer +4 more
2020arXiv.org15 citations
Semantic Scholar
Automated vs manual delineations of regions of interest- a comparison in commercially available perfusion MRI software
I. Galinovic, A. Ostwaldt, Carina Soemmer, Helena Bros +3 more
2012BMC Medical Imaging15 citations Open access
Semantic Scholar
Subtracted Dynamic MR Perfusion Source Images (sMRP-SI) provide Collateral Blood Flow Assessment in MCA Occlusions and Predict Tissue Fate
K. Villringer, Rafael Serrano-Sandoval, U. Grittner, I. Galinovic +5 more
2016European Radiology13 citations
Semantic Scholar
Natural course of total mismatch and predictors for tissue infarction
B. Hotter, A. Ostwaldt, Anastasia Levichev-Connolly, M. Rozanski +2 more
2015Neurology11 citations
Semantic Scholar
Relative FLAIR Signal Intensities over Time in Acute Ischemic Stroke: Comparison of Two Methods
A. Ostwaldt, I. Galinovic, B. Hotter, U. Grittner +4 more
2015Journal of Neuroimaging6 citations
Semantic Scholar
Fully automated longitudinal segmentation of new or enlarging Multiple Scleroses (MS) lesions using 3D convolution neural networks
J. Krüger, R. Opfer, N. Gessert, A. Ostwaldt +4 more
2020RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren4 citations
Semantic Scholar
MRI Follow-Up after 24 h Is an Accurate Surrogate Parameter for Treatment Success after Thrombolysis
A. Ostwaldt, I. Galinovic, F. Grosse-Dresselhaus, L. Neeb +5 more
2013Cerebrovascular Diseases3 citations
Semantic Scholar
GAMES (Glyburide Advantage in Malignant Edema and Stroke) RP: A Phase II Study Toward Preventing Edema After Ischemia (S7.004)
K. Sheth, J. Elm, H. Hinson, B. Molyneaux +7 more
2016Neurology2 citations
Semantic Scholar
Case report of a young stroke patient showing interim normalization of the MRI diffusion-weighted imaging lesion
A. Ostwaldt, T. Usnich, C. Nolte, K. Villringer +1 more
2015BMC Medical Imaging2 citations Open access
Semantic Scholar
Abstract 15: Long Term Outcomes of Intravenous Glyburide in Patients 70 Years of Age or Under: Subgroup Analysis From the Phase II GAMES-RP Study of Patients with Large Hemispheric Infarction
K. Sheth, K. Cheung, J. Elm, H. Hinson +5 more
20170 citations
Semantic Scholar
[P4–236]: COMPARISON OF BRAIN MORPHOLOGY BETWEEN TWO DATABASES OF ELDERLY COGNITIVELY INTACT INDIVIDUALS FOR THE VALIDATION OF HIPPOCAMPAL VOLUME NORMATIVE DATA IN THE FRENCH INSIGHT‐PRE AD COHORT
E. Cavedo, R. Opfer, A. Ostwaldt, L. Spies +4 more
20170 citations
Semantic Scholar
Long Term Outcomes of IV Glyburide In Patients 70 Years of Age or Under: Subgroup Analysis from the Phase II GAMES-RP Study of Patients with Large Hemispheric Infarction (S29.008)
Kevin N. Sheth, Ken Cheung, Jordan Elm, H. Hinson +5 more
2017Neurology0 citations
Semantic Scholar
Abstract TP92: Continuous Glyburide Infusion Prevents Hemorrhagic Transformation After Cerebral Infarction in a Rodent Reperfusion Model
Cristina Sastre, T. Igarashi, S. Larsen, Zoe Wolcott +3 more
20170 citations
Semantic Scholar
GAMES (Glyburide Advantage in Malignant Edema and Stroke) RP: A Phase II Study Toward Preventing Edema After Ischemia (I11.006)
Kevin N. Sheth, Jordan Elm, H. Hinson, Bradley J. Molyneaux +7 more
2016Neurology0 citations
Semantic Scholar
GAMES (Glyburide Advantage in Malignant Edema and Stroke) RP Trial: Intermediate Endpoint Analysis as Proof-Of-Concept (I11.010)
W. Kimberly, Jordan Elm, H. Hinson, Bradley J. Molyneaux +6 more
2016Neurology0 citations
Semantic Scholar
GAMES (Glyburide Advantage in Malignant Edema and Stroke) RP Trial: Intermediate Endpoint Analysis as Proof-Of-Concept (S7.006)
W. Kimberly, J. Elm, H. Hinson, B. Molyneaux +6 more
2016Neurology0 citations
Semantic Scholar
Abstract WMP24: Quantitative Relaxometry Quantifies Brain Edema After Ischemic Stroke
Thomas W. K. Battey, I. Zhou, A. Ostwaldt, T. Igarashi +2 more
20160 citations
Semantic Scholar
Blood-brain barrier disruptions in the acute phase of ischemic stroke in human patients
A. Ostwaldt
20150 citations
Semantic Scholar
Abstract 5: Dynamic Perfusion Assessment of Collateral Blood Flow in MCA Occlusion as Indicator of Tissue Fate
K. Villringer, Rafael A. Serrano Sandoval, A. Ostwaldt, P. Brunecker +2 more
2014Stroke0 citations
Semantic Scholar
Contents Vol. 36, 2013
G. Sibolt, Sami Curtze, S. Melkas, T. Pohjasvaara +158 more
2013Cerebrovascular Diseases0 citations Open access
Semantic Scholar
The choice of arterial input function in perfusion-weighted MR imaging-size matters in terms of saturation-like effects
P. Brunecker, A. Ostwaldt, I. Galinovic, J. Fiebach +1 more
20120 citations
Semantic Scholar

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