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PET scans may spot hidden brain risk after stroke

NCT ID NCT04356599

Knowledge-focused Sponsor: University Hospital, Montpellier Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether a special PET scan can predict delayed brain damage in people who had a bleeding stroke from a burst aneurysm. 35 participants received a PET scan within days of their stroke to measure how their brain cells take up sugar, which reflects blood flow. The goal was to see if early changes could forecast later complications, like delayed brain injury or artery spasms.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this could lead to a way to predict which patients are at risk for delayed brain injury after a bleeding stroke, allowing earlier treatment.
What could go wrong
This is a small, early pilot study with only 35 people. The imaging method may not reliably predict outcomes in larger, more diverse groups.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

35 people

The number who actually took part.

Started

Jul 2020

Finished

Feb 2024

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * written informed consent to participate in the study must be obtained from the subject or proxy/legal representative prior to enrollment. * males and females aged 18 years and older. * SAH proven by computed tomography (CT) and that has occurred within the last 72 hours. * ruptured saccular aneurysm angiographically confirmed by digital subtraction angiogram or CT angiogram, which has been successfully secured by surgical clipping or endovascular coiling. * high-risk subjects for DCI: "thick clot" on the hospital admission CT (grade 3 or grade 4 on the modified Fisher Scale). * a woman of childbearing potential is eligible only if the serum pregnancy test performed during the screening period is negative. Exclusion Criteria: * PET/CT contradications * MRI contradications * gadolinium or meglumine hypersensitivity * glomerular filtration rate \<30mL/min * SAH due to other causes than ruptured saccular aneurysm. * post-HSA cardiac arrest. * high sustained ICP ( \>20mmHg lasting \>20min) despite optimal treatment. * significant and concomitant organ failure amongst the following: hypotension with systolic blood pressure \<90mmHg refractory to treatment; unresolved pulmonary edema or pneumonia with severe hypoxia defined as PaO2/FiO2 \<150; severe cardiac failure requiring inotropic support. * patients with "do-not-resuscitate" orders, withdrawal of care situation, dying patient. * vulnerable patient populations (minor, legal vulnerability, prisoner) * pregnant and nursing mothers.

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Conditions

The condition(s) this trial relates to.

acquired aneurysmal subarachnoid hemorrhage

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Aneurysmal subarachnoid haemorrhage

Contacts and locations

Locations

  • Département d'Anesthésie-Réanimation Gui de Chauliac 80 Av Augustin.Fliche

    Montpellier, Montpellier, 34295, France

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