Covid-19TEP-COVNCT04764721
Characterization in 18F-FDG PET-CT of Brain and Lung Lesions in Subjects With a History of Severe COVID-19
A study testing 18F-FDG PET-CT in people with Covid-19, run by Central Hospital, Nancy, France at 1 site in France.
Trial summary
Patients with Covid-19 (Coronavirus disease 19) may experience multiple neurological symptoms . 18F-FDG PET-CT ( Positons EmissionTomography coupled with a Computer Tomography with flurodesoxyglucose labelled with fluor 18), which reflects neuronal glycolytic metabolism, shows early variations in neuronal function. Read more about this study
- Who is it for?
- Ages 18 to 65 years
- Conditions the study is for
- Covid-19
- What is being tested?
- 18F-FDG PET-CT
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 25 participants
- Where
- 1 siteFrance
- Study dates
- 17 Nov 2021to 27 Nov 2023
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patients aged between 18 and 65 years
- Patient included in the Neurocog-Covid study (i.e. presenting a cognitive disorder that has been objectified on the neuropsychological assessment and having to undergo a cerebral MRI),
- Patient who has received full information about the organization of the research and has given written informed consent (or a third person, independent of the investigator and sponsor, in the case of literacy disability),
- Patient affiliated to or beneficiary of a social security plan
Who cannot join
- Women of childbearing age who do not have effective contraception.
- Pregnant woman or nursing mother.
- Persons referred to in Articles L. 1121-5, L. 1121-7 and L1121-8 of the Public Health Code.
- Persons deprived of liberty by a judicial or administrative decision, persons undergoing psychiatric care pursuant to articles L. 3212-1 and L. 3213-1
- Contraindication to perform 18F-FDG PET-CT
- Patients with a history of pre-Covid-19 psychiatric or chronic illness
- Persons referred to in Articles L. 1121-5, L. 1121-7 and L1121-8 of the Public Health Code.
Trial locations and contacts
1 site in 1 country.
France1 site
CHRU NANCY Brabois, nuclear medicine department
Vandœuvre-lès-Nancy, 54511
About this study
Official title: Characterization in 18F-FDG PET-CT of Brain and Lung Lesions in Young Subjects With Sequelae Psycho-cognitive Disorders in the Aftermath of Severe Covid-19
Patients with Covid-19 (Coronavirus disease 19) may experience multiple neurological symptoms .
18F-FDG PET-CT ( Positons EmissionTomography coupled with a Computer Tomography with flurodesoxyglucose labelled with fluor 18), which reflects neuronal glycolytic metabolism, shows early variations in neuronal function.
Moreover the tropism of Covid-19 is essentially pulmonary and the hypothesis of this study is with 18F-FDG PET-CT it's possible to study the relationship between cerebral metabolism and the metabolism of pulmonary lesions following Covid-19 infection.
Read the detailed description
Patients with Covid-19 may experience multiple neurological symptoms including confusion and headaches (non-specific neurological symptoms), while others develop specific neurological manifestations, including stroke, related to increased bleeding disorders, seizures and signs of encephalitis.
The coronavirus enters the central nervous system through the olfactory bulb, causing olfactory and taste dysfunctions. These symptoms may appear before, during or even after the general symptoms.
Indeed, 18F-FDG PET-CT, which reflects neuronal glycolytic metabolism, shows early variations in neuronal function, even in the absence of morphological changes visualized by MRI (Magnetic Resonance Imaging).
Moreover the tropism of Covid-19 is essentially pulmonary and it is accepted that acute pulmonary lesions are independent risk factors for cerebral hypoxia. Furthermore, the cytokine storm due to COVID-19 and the resulting hyperinflammation state may induce a transient increase in pressure, with endothelial and vascular lesions and increased capillary permeability, and promote pulmonary oedema leading to secondary cerebral damage.
The lung/brain relationship is therefore essential to be studied in pathologies whose main tropism is the lung.
18F-FDG PET has the advantage of being able to explore both cerebral metabolism and the metabolism of COVID-19-related lung lesions.
The hypothesis of this study is that 18F-FDG PET-CT can objectify and characterize central nervous system involvement in Covid-19 infection. It also makes it possible to study the relationship between cerebral metabolism and the metabolism of pulmonary lesions following Covid-19 infection.
- Conditions
- Covid-19
- Being tested
- 18F-FDG PET-CT
- Keywords
- Covid-19, brain, 18F-FDG PET-CT, lung
- Medical subject headings
- COVID-19
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
18F-FDG PET-CTDevice
Enrolled patients in Neurocog-Covid will receive a 18F-FDG PET-CT
| Study group | Role | What they receive |
|---|---|---|
| Patients enrolled in Neurocog-Covid study in Nancy hospital | Experimental | Young patients (< 65 year old) who contracted VIDOC 19 and were hospitalized for less than 7 days during the first wave, and who present cognitive disorders may be definitively included in the Neurocog-Covid study if their neuropsychological assessment is abnormal. They will then have a prescription for a cerebral MRI and will be enrolled in the TEP-Covid study. If they accept, they will receive a 18F-FDG PET-CT . Receives: Device: 18F-FDG PET-CT |
What is being measured
The primary outcome is the main question the study is designed to answer.
To characterize the changes in brain metabolism in 18F-FDG PET-CT in patients enrolled in Neurocog-Study in the hospital of Nancy
Volumes and topographies of brain with a decrease in glycolytic metabolism in 18F-FDG PET-CT compared to the brain metabolism of a control population.
Measured: 13 months
Secondary outcomes (3)
To compare the sensitivity of detection of cerebral abnormalities in MRI and 18F-FDG PET-CT in patients included in Neurocog-Covid study at the hospital of Nancy
Number of abnormal MRI and number of abnormal 18F-FDG PET-CT
Measured: 13 months
To correlate the brain functions impacted on the neuropsychological assessment to the brain metabolism in 18F-FDG PET-CT in patients included in the Neurocog-Covid study at the Nancy Hospital
Volumes and topographies of brain with a decrease in glycolytic metabolism in 18F-FDG PET-CT in relation to cognitive profiles identified as deficient.
Measured: 13 months
Correlating brain metabolism to the volume of damage to the lung sequelae of Covid-19.
Volumes and topographies of brain with a decrease in glycolytic metabolism in 18F-FDG PET-CT in relation to the volumes affected in the lungs
Measured: 13 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 Feb 2021
- Study start17 Nov 2021
- Primary completion15 Aug 2023
- Study completion27 Nov 2023
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Covid-19Studies of the same condition, open and under way.
- More trials run by Central Hospital, Nancy, FranceThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Diagnosis
- Allocation
- Not applicable
- Intervention model
- Single group
- Model description
- Patients with sequential psycho-cognitive disorders following severe COVID-19 and included in the Neurocog-Covid study
- Masking
- None (open label)
- Enrolment
- 25 participants (actual)
Sponsor and investigators
- Lead sponsor
- Central Hospital, Nancy, France
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Antoine VERGER, Central Hospital, Nancy, France
- Investigators
- Antoine VERGER, MD, PhD, Principal investigator, CHRU Nancy
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04764721
- Sponsor's protocol ID
- A2021-01-01
- Acronym
- TEP-COV
- Status last verified
- Jun 2026
- First submitted
- 19 Feb 2021
- Last updated
- 25 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Heyer S, Meyer M, Hossu G, Doyen M, Bruyere A, Goehringer F, Tyvaert L, Hopes L, Verger A. Brain 18F-FDG-PET abnormalities and their associations with neuropsychological assessment in initially hospitalized patients with post-COVID-19 conditions: a prospective and longitudinal study. Eur J Nucl Med Mol Imaging. 2025 Jul;52(9):3404-3411. doi: 10.1007/s00259-025-07204-3. Epub 2025 Mar 26.
PubMed 40137975
Study at a glance
From the registry record, last updated by the sponsor on 25 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Characterization in 18F-FDG PET-CT of Brain and Lung Lesions in Young Subjects With Sequelae Psycho-cognitive Disorders in the Aftermath of Severe Covid-19
- ClinicalTrials.gov ID
- NCT04764721
- Acronym / sponsor ID
- TEP-COV / A2021-01-01
- Conditions
- Covid-19
- Keywords
- Covid-19, brain, 18F-FDG PET-CT, lung
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 25 participants (actual)
- Lead sponsor
- Central Hospital, Nancy, FranceUniversity, hospital or other
- Study start
- 17 Nov 2021 (actual)
- Primary completion
- 15 Aug 2023 (actual)
- Study completion
- 27 Nov 2023 (actual)
- First posted
- 21 Feb 2021 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Patients with Covid-19 (Coronavirus disease 19) may experience multiple neurological symptoms .
18F-FDG PET-CT ( Positons EmissionTomography coupled with a Computer Tomography with flurodesoxyglucose labelled with fluor 18), which reflects neuronal glycolytic metabolism, shows early variations in neuronal function.
Moreover the tropism of Covid-19 is essentially pulmonary and the hypothesis of this study is with 18F-FDG PET-CT it's possible to study the relationship between cerebral metabolism and the metabolism of pulmonary lesions following Covid-19 infection.
Detailed description
Patients with Covid-19 may experience multiple neurological symptoms including confusion and headaches (non-specific neurological symptoms), while others develop specific neurological manifestations, including stroke, related to increased bleeding disorders, seizures and signs of encephalitis.
The coronavirus enters the central nervous system through the olfactory bulb, causing olfactory and taste dysfunctions. These symptoms may appear before, during or even after the general symptoms.
Indeed, 18F-FDG PET-CT, which reflects neuronal glycolytic metabolism, shows early variations in neuronal function, even in the absence of morphological changes visualized by MRI (Magnetic Resonance Imaging).
Moreover the tropism of Covid-19 is essentially pulmonary and it is accepted that acute pulmonary lesions are independent risk factors for cerebral hypoxia. Furthermore, the cytokine storm due to COVID-19 and the resulting hyperinflammation state may induce a transient increase in pressure, with endothelial and vascular lesions and increased capillary permeability, and promote pulmonary oedema leading to secondary cerebral damage.
The lung/brain relationship is therefore essential to be studied in pathologies whose main tropism is the lung.
18F-FDG PET has the advantage of being able to explore both cerebral metabolism and the metabolism of COVID-19-related lung lesions.
The hypothesis of this study is that 18F-FDG PET-CT can objectify and characterize central nervous system involvement in Covid-19 infection. It also makes it possible to study the relationship between cerebral metabolism and the metabolism of pulmonary lesions following Covid-19 infection.
Study design
- Primary purpose
- Diagnosis
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
- Model description
- Patients with sequential psycho-cognitive disorders following severe COVID-19 and included in the Neurocog-Covid study
| Arm | Type | Receives |
|---|---|---|
| Patients enrolled in Neurocog-Covid study in Nancy hospital | Experimental | Device: 18F-FDG PET-CTYoung patients (< 65 year old) who contracted VIDOC 19 and were hospitalized for less than 7 days during the first wave, and who present cognitive disorders may be definitively included in the Neurocog-Covid study if their neuropsychological assessment is abnormal. They will then have a prescription for a cerebral MRI and will be enrolled in the TEP-Covid study. If they accept, they will receive a 18F-FDG PET-CT . |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
- Patients aged between 18 and 65 years
- Patient included in the Neurocog-Covid study (i.e. presenting a cognitive disorder that has been objectified on the neuropsychological assessment and having to undergo a cerebral MRI),
- Patient who has received full information about the organization of the research and has given written informed consent (or a third person, independent of the investigator and sponsor, in the case of literacy disability),
- Patient affiliated to or beneficiary of a social security plan
Key exclusion criteria (7 listed)
- Women of childbearing age who do not have effective contraception.
- Pregnant woman or nursing mother.
- Persons referred to in Articles L. 1121-5, L. 1121-7 and L1121-8 of the Public Health Code.
- Persons deprived of liberty by a judicial or administrative decision, persons undergoing psychiatric care pursuant to articles L. 3212-1 and L. 3213-1
- Contraindication to perform 18F-FDG PET-CT
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| 18F-FDG PET-CTEnrolled patients in Neurocog-Covid will receive a 18F-FDG PET-CT | Device | Patients enrolled in Neurocog-Covid study in Nancy hospital |
Primary outcome
To characterize the changes in brain metabolism in 18F-FDG PET-CT in patients enrolled in Neurocog-Study in the hospital of Nancy
Time frame: 13 months
Volumes and topographies of brain with a decrease in glycolytic metabolism in 18F-FDG PET-CT compared to the brain metabolism of a control population.
3 secondary outcomes
To compare the sensitivity of detection of cerebral abnormalities in MRI and 18F-FDG PET-CT in patients included in Neurocog-Covid study at the hospital of Nancy
Time frame: 13 months
To correlate the brain functions impacted on the neuropsychological assessment to the brain metabolism in 18F-FDG PET-CT in patients included in the Neurocog-Covid study at the Nancy Hospital
Time frame: 13 months
Correlating brain metabolism to the volume of damage to the lung sequelae of Covid-19.
Time frame: 13 months
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 25 Jun 2026.
- Results publication: PubMed 40137975Heyer S, Meyer M, Hossu G, Doyen M, Bruyere A, Goehringer F, Tyvaert L, Hopes L, Verger A. Brain 18F-FDG-PET abnormalities and their associations with neuropsychological assessment in initially hospitalized patients with post-COVID-19 conditions: a prospective and longitudinal study. Eur J Nucl Med Mol Imaging. 2025 Jul;52(9):3404-3411. doi: 10.1007/s00259-025-07204-3. Epub 2025 Mar 26.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Antoine VERGER, MD, PhD principal investigator
CHRU Nancy
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing 18F-FDG PET-CT in people with Covid-19, run by Central Hospital, Nancy, France at 1 site in France.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 25 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
To characterize the changes in brain metabolism in 18F-FDG PET-CT in patients enrolled in Neurocog-Study in the hospital of Nancy (time frame: 13 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04764721, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Jun 2026; AzTrials last refreshed its copy on 7 Nov 2026.