O
Osama Sabri
Researcher at RWTH Aachen University
Publications - 165
Citations - 3891
Osama Sabri is an academic researcher from RWTH Aachen University. The author has contributed to research in topics: Positron emission tomography & Magnetic resonance imaging. The author has an hindex of 35, co-authored 165 publications receiving 3597 citations. Previous affiliations of Osama Sabri include Leipzig University & Max Planck Society.
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Journal ArticleDOI
Fluorine-18 fluorodeoxyglucose positron emission tomography in the differential diagnosis of pancreatic carcinoma: a report of 106 cases.
Michael Zimny,Roland Bares,J. Faß,Gerhard Adam,U. Cremerius,Bernhard M. Dohmen,P. Klever,Osama Sabri,Volker Schumpelick,Udalrich Buell +9 more
TL;DR: PET showed an overall sensitivity of 85%, a specificity of 84%, a negative predictive value of 71%, and a positive predictivevalue of 93%, which shows PET to be of value in assessing unclear pancreatic masses, and the diagnostic accuracy of PET examinations is very dependent on serum glucose levels.
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Correlation of positive symptoms exclusively to hyperperfusion or hypoperfusion of cerebral cortex in never-treated schizophrenics
TL;DR: Different positive symptoms are accompanied by different rCBF values--some related to hyperperfusion, others to hypoperfusion; this finding may help to explain observed inconsistencies of perfusion patterns in drug-naïve schizophrenics.
Journal ArticleDOI
Neuropsychological Impairment Correlates With Hypoperfusion and Hypometabolism but Not With Severity of White Matter Lesions on MRI in Patients With Cerebral Microangiopathy
Osama Sabri,Erich-Bernhard Ringelstein,Dirk Hellwig,R. Schneider,Mathias Schreckenberger,Hans-Jürgen Kaiser,Michael Mull,Udalrich Buell +7 more
TL;DR: LI and DWML are epiphenomena that may morphologically characterize cerebral microangiopathy but do not in themselves indicate cognitive impairment.
Journal Article
FDG PET for Detection and Therapy Control of Metastatic Germ Cell Tumor
U. Cremerius,P. Effert,Gerhard Adam,Osama Sabri,Michael Zimny,Gudrun Wagenknecht,Gerhard Jakse,Udalrich Buell +7 more
TL;DR: PET using FDG is superior to CT for assessment of residual tumor after chemotherapy of germ cell cancer and may have an increased effect on patient management in the future.
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Neurometabolic effects of psilocybin, 3,4-methylenedioxyethylamphetamine (MDE) and d-methamphetamine in healthy volunteers. A double-blind, placebo-controlled PET study with [18F]FDG.
Euphrosyne Gouzoulis-Mayfrank,M. Schreckenberger,M. Schreckenberger,Osama Sabri,Christoph Arning,B. Thelen,Manfred Spitzer,Manfred Spitzer,Karl-Artur Kovar,Leopold Hermle,Udalrich Büll,Henning Sass +11 more
TL;DR: The PSI data are in line with studies on acute schizophrenic patients suggesting frontal overactivity at rest, but diminished capacity to activate prefrontal regions upon cognitive demand, and the MDE data support the hypothesis that entactogens constitute a distinct psychoactive substance class, which takes an intermediate position between stimulants and hallucinogens.