Evidence map›Paper›PMID 33452633›Full record

ArticleEuropean journal of nuclear medicine and molecular imaging2021

The cerebral network of COVID-19-related encephalopathy: a longitudinal voxel-based 18F-FDG-PET study.

Aurélie Kas, Marine Soret, Nadya Pyatigoskaya, Marie-Odile Habert, Adèle Hesters, Loic Le Guennec, Olivier Paccoud, Stéphanie Bombois, Cécile Delorme, on the behalf of CoCo-Neurosciences study group and COVID SMIT PSL study group

Erratum issuedOpen access · bronzeAbstract read
In one paragraph

Article in European journal of nuclear medicine and molecular imaging, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 84 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
84citing papers in PubMed, 5 pooled it
17.2field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

84 citing papers in PubMed, 5 syntheses or guidelines pooled it, 168 citations in OpenAlex.

  1. Pooled it
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  5. Molecular Imaging Findings on Acute and Long-Term Effects of COVID-19 on the Brain: A Systematic Review.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2022
    Pooled it
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  11. Diverse tau pathologies in late-life mood disorders revealed by PET and autopsy assays.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
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  12. Persistent dysfunctions of brain metabolic connectivity in long-covid with cognitive symptoms.European journal of nuclear medicine and molecular imaging · 2025
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24 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 3 institutions in 2 countries.

Aurélie KasSorbonne Université, AP-HP, Hôpitaux Universitaires Pitié-Salpêtrière Charles Foix, Service de Médecine Nucléaire and LIB, INSERM U1146, 75013, Paris, France. aurelie.kas@aphp.fr.ORCID http://orcid.org/0000-0001-9463-3658
Marine SoretSorbonne Université, AP-HP, Hôpitaux Universitaires Pitié-Salpêtrière Charles Foix, Service de Médecine Nucléaire and LIB, INSERM U1146, 75013, Paris, France.
Nadya PyatigoskayaDépartement de Neuroradiologie, Sorbonne Université, AP-HP, Hôpitaux Universitaires Pitié-Salpêtrière Charles Foix, 75013, Paris, France.
Marie-Odile HabertSorbonne Université, AP-HP, Hôpitaux Universitaires Pitié-Salpêtrière Charles Foix, Service de Médecine Nucléaire and LIB, INSERM U1146, 75013, Paris, France.
Adèle HestersDépartement de Neurologie, Sorbonne Université, AP-HP, Hôpitaux Universitaires Pitié-Salpêtrière Charles Foix, 75013, Paris, France.
Loic Le GuennecDépartement de Neurologie, Sorbonne Université, AP-HP, Hôpitaux Universitaires Pitié-Salpêtrière Charles Foix, 75013, Paris, France.
Olivier PaccoudService de Maladies infectieuses et Tropicales, Sorbonne Université, AP-HP, Hôpitaux Universitaires Pitié-Salpêtrière Charles Foix, 75013, Paris, France.
Stéphanie Bombois *Sorbonne Université, AP-HP, Hôpitaux Universitaires Pitié-Salpêtrière Charles Foix, Institut de la Mémoire et de la Maladie d'Alzheimer, 75013, Paris, France.
Cécile Delorme *Département de Neurologie, Sorbonne Université, AP-HP, Hôpitaux Universitaires Pitié-Salpêtrière Charles Foix, 75013, Paris, France.
on the behalf of CoCo-Neurosciences study group and COVID SMIT PSL study group
Saint Louis University Hospital · USSorbonne Université · FRInserm · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeLittle is known about the neuronal substrates of neuropsychiatric symptoms associated with COVID-19 and their evolution during the course of the disease. We aimed at describing the longitudinal brain metabolic pattern in COVID-19-related encephalopathy using 18F-FDG-PET/CT.

methodsSeven patients with variable clinical presentations of COVID-19-related encephalopathy were explored thrice with brain 18F-FDG-PET/CT, once in the acute phase, 1 month later and 6 months after COVID-19 onset. PET images were analysed with voxel-wise and regions-of-interest approaches in comparison with 32 healthy controls.

resultsPatients' neurological manifestations during acute encephalopathy were heterogeneous. However, all of them presented with predominant cognitive and behavioural frontal disorders. SARS-CoV-2 RT-PCR in the CSF was negative for all patients. MRI revealed no specific abnormalities for most of the subjects. All patients had a consistent pattern of hypometabolism in a widespread cerebral network including the frontal cortex, anterior cingulate, insula and caudate nucleus. Six months after COVID-19 onset, the majority of patients clinically had improved but cognitive and emotional disorders of varying severity remained with attention/executive disabilities and anxio-depressive symptoms, and lasting prefrontal, insular and subcortical 18F-FDG-PET/CT abnormalities.

conclusionThe implication of this widespread network could be the neural substrate of clinical features observed in patients with COVID-19, such as frontal lobe syndrome, emotional disturbances and deregulation of respiratory failure perception. This study suggests that this network remains mildly to severely impaired 6 months after disease onset.

Indexed as

Brain DiseasesCOVID-19BrainFluorodeoxyglucose F18HumansPositron-Emission TomographyPositron Emission Tomography Computed TomographySARS-CoV-2Fluorodeoxyglucose F1818F-FDG-PETCOVID-19Glucose metabolismPrefrontal impairmentSARS-CoV-2

Identifiers

PMID33452633
PMCPMC7810428
OpenAlexW3120514552

What OpenQuestion holds

Textmetadata
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.