5 results on '"Trevor Shields"'
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2. Prevalence of Amyloid Cerebral Deposits and Cognitive Outcome After Stroke: The IDEA3 Study
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Olivier Godefroy, Mélanie Barbay, Jeanne Martin, Trevor Shields, Chantal Lamy, Audrey Courselle-Arnoux, Sandrine Canaple, Claire Leclercq, Martine Roussel, Marc-Etienne Meyer, Etienne Marchal, and Frank A. Wollenweber
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Specialties of internal medicine ,RC581-951 ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Introduction: The contribution of associated Alzheimer disease to poststroke cognitive impairment has been suggested on clinical grounds. However, the few published studies using amyloid PET have provided a widely ranging prevalence and a questionable relationship with cognitive status.The main objective of the study was to determine the prevalence of amyloid PET positivity among poststroke patients with at least one impaired cognitive score. The secondary objectives were to determine the association between clinical, cognitive, and imaging characteristics at baseline with amyloid status. Methods: The IDEA3 cohort included 91 stroke patients (cerebral infarct: 89%; hemorrhage: 11%). They were assessed at 808 ± 589 days poststroke with a cognitive battery, MRI, and florbetapir PET. Clinical, cognitive, and imaging characteristics at baseline were compared according to amyloid status. Results: Amyloid PET was positive for 14 patients, corresponding to a prevalence of 15.4% (95%CI: 7.97-22.8). Amyloid-positive patients were older (p = 0.0001), did not differ according to the cause of stroke, except for a tendency towards a higher frequency of cerebral amyloid angiopathy in the hemorrhagic subgroup (p = 0.06). Their cognitive performance was lower on both the cognitive screening test (p = 0.023) and battery (p = 0.02), without a specific profile. Discussion: This study supports the mild prevalence of amyloid burden and shows that it contributes to poststroke cognitive impairment.
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- 2024
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3. Book Review of Forty Autumns
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Trevor Shields
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- 2020
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4. Added value of
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Mathieu, Ceccaldi, Thérèse, Jonveaux, Antoine, Verger, Pierre, Krolak-Salmon, Claire, Houzard, Olivier, Godefroy, Trevor, Shields, Audrey, Perrotin, Rossella, Gismondi, Santiago, Bullich, Aleksandar, Jovalekic, Nicola, Raffa, Florence, Pasquier, Franck, Semah, Bruno, Dubois, Marie-Odile, Habert, David, Wallon, Mathieu, Chastan, Pierre, Payoux, Andrew, Stephens, and Nathalie, Sastre-Hengan
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Diagnosis, Differential ,Male ,Amyloid ,Aniline Compounds ,Positron-Emission Tomography ,Stilbenes ,Brain ,Humans ,Dementia ,Female ,France ,Radiopharmaceuticals ,Aged - Abstract
Although some studies have previously addressed the clinical impact of amyloid positron emission tomography (PET), none has specifically addressed its selective and hierarchical implementation in relation to cerebrospinal fluid analysis in a naturalistic setting.This multicenter study was performed at French tertiary memory clinics in patients presenting with most complex clinical situations (i.e., early-onset, atypical clinical profiles, suspected mixed etiological conditions, unexpected rate of progression), for whom cerebrospinal fluid analysis was indicated but either not feasible or considered as noncontributory (ClinicalTrials.gov: NCT02681172).Two hundred five patients were enrolled with evaluable florbetaben PET scans; 64.4% of scans were amyloid positive. PET results led to changed diagnosis and improved confidence in 66.8% and 81.5% of patients, respectively, and altered management in 80.0% of cases.High-level improvement of diagnostic certainty and management is provided by selective and hierarchical implementation of florbetaben PET into current standard practices for the most complex dementia cases.
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- 2017
5. Impact de la TEP au Florbetaben sur le diagnostic et la prise en charge de patients éligibles à une analyse du LCR pour une suspicion de maladie d’Alzheimer
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Mathieu Ceccaldi, Claire Houzard, Franck Semah, Rossella Gismondi, P. Krolak Salmon, Mathieu Chastan, Audrey Perrotin, Eric Guedj, Santiago Bullich, Trevor Shields, Olivier Godefroy, Antoine Verger, Nicola Raffa, Andrew W. Stephens, M.-O. Habert, Bruno Dubois, Thérèse Rivasseau Jonveaux, Aleksandar Jovalekic, Florence Pasquier, and Didier Hannequin
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Radiological and Ultrasound Technology ,Biophysics ,Radiology, Nuclear Medicine and imaging - Abstract
Introduction La maladie d’Alzheimer (MA) est de diagnostic difficile, en particulier dans ses formes precoces et atypiques, ou cas de comorbidites. Dans ce contexte, l’analyse des biomarqueurs du Liquide Cephalo-Rachidien (LCR) est recommandee, mais reste non realisable ou non-conclusive chez certains patients. Cette etude s’est interessee a l’impact de la TEP amyloide au 18F-Florbetaben sur le diagnostic et la prise en charge de ce groupe particulier de patients. Materiels & methodes Cette etude multicentrique (ClinicalTrials.gov : NCT02681172 ) a ete realisee au sein de 19 CMRR (Centre Memoire de Ressources et de Recherche), et services de Medecine Nucleaire associes. Elle incluait les patients eligibles pour une analyse des biomarqueurs du LCR en reference aux recommandations formulees par la Haute Autorite de sante (HAS), mais pour lesquels la ponction lombaire (PL) etait non realisable (contre-indication ; refus) ou pour lesquels les resultats etaient consideres comme ambigus. La TEP amyloide au 18F-Florbetaben etait realisee localement aupres de medecins nucleaires formes a l’interpretation de ces images. Apres diffusion du compte-rendu, le diagnostic retenu et la prise en charge etaient compares a l’evaluation initiale realisee avant la TEP. Resultats Cette etude incluait au final 205 patients (103 hommes ; 70,9 ans ± 9,7) avec un examen TEP realise et interpretable. Parmi eux, 118 n’avaient pas eu de PL, avec un refus pour 75 de ces cas. Au total, 132 des 205 examens (64,4 %) etaient positifs (amyloide + ). Apres diffusion des resultats des examens, 137/205 des diagnostics initiaux (66,8 %) etaient modifies, plus particulierement encore en cas de resultats negatifs (83,6 % vs. 57,6 % en cas d’amyloide + ; p p Conclusion L’interpretation visuelle de la TEP amyloide au 18F-Florbetaben conduite localement par des medecins nucleaires formes a ces examens influence les decisions d’expertise clinique chez les patients pour qui la PL n’est pas realisable ou pour qui les resultats du LCR restent ambigus. Ces resultats encouragent l’integration de la TEP amyloide au schema d’expertise de prise en charge diagnostique de la MA. Financement : Piramal Imaging.
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- 2017
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