Ta strona została przetłumaczona automatycznie i dokładność tłumaczenia nie jest gwarantowana. Proszę odnieść się do angielska wersja za tekst źródłowy.

Exploratory Study of Cerebral Perfusion and Metabolic Alterations and Neurocognitive Disorders in Patients With Unruptured Arteriovenous Malformations Before and After Surgical Treatment (APEMMAV-NR)

4 maja 2026 zaktualizowane przez: University Hospital, Montpellier
The goal of the clinical trial is to describe perfusion and metabolic alterations in different brain regions before and six months after surgical treatment of arteriovenous malformations in adult patients with unruptured arteriovenous malformations.

Przegląd badań

Szczegółowy opis

Unruptured cerebral arteriovenous malformations are a potentially life-threatening condition and the third leading cause of intracerebral hemorrhage in young adults. Approximately two-thirds of patients with arteriovenous malformations experience a rupture leading to intracranial haemorrhage or develop progressive neurological symptoms or deficits. To date, decisions regarding interventional treatment of unruptured arteriovenous malformations are based on the characteristics of the arteriovenous malformation (size, location, etc.).However, the treatment of these arteriovenous malformations remains controversial in the literature, as the morbidity and mortality associated with intervention may exceed those the malformation's natural history. Furthermore, characteristics of arteriovenous malformations observed during examinations (size, hemodynamic patterns, vascular components) are often insufficient to predict spontaneous evolution, haemorrhagic risk, and associated symptoms.

Studies suggest that neurological symptoms may be linked to impaired cerebral perfusion and metabolism, particularly through hypoperfusion in the peri-arteriovenous malformation region or peri-lesional oedema. However, the results of these previous studies remain limited and of little significance.

The proposed project aims to establish a cohort over a 16-month period in order to study in detail the metabolic and perfusion alterations associated with arteriovenous malformations, as well as their neurocognitive and psychological impacts, with the aim of improving the pathophysiology understanding and treatment of these malformations.

Typ studiów

Interwencyjne

Zapisy (Szacowany)

10

Faza

  • Nie dotyczy

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Kontakt w sprawie studiów

Lokalizacje studiów

    • France
      • Montpellier, France, Francja, 34295
        • CHU de Montpellier
        • Kontakt:
        • Główny śledczy:
          • Lucas RIBEIRO, Dr

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

  • Dorosły
  • Starszy dorosły

Akceptuje zdrowych ochotników

Nie

Opis

Inclusion Criteria:

  • Adults aged 18 and older
  • Admitted for an unruptured arteriovenous malformation with a decision to proceed with surgery

Exclusion Criteria:

  • Patients who refuse surgical treatment for arteriovenous malformation
  • Contraindications to 18F-FDG PET (uncontrolled diabete)
  • Patients' inability to lie still for 40 minutes
  • Patients with a confirmed diagnosis of neurodegenerative or psychiatric disorders
  • Pregnant or breastfeeding women (Article L.1121-5 of the French Public Health Code)
  • Persons deprived of their liberty by judicial or administrative decision (Article L.1121-6 of the French Public Health Code)
  • Persons who are subject to legal protection measures or who are unable to express their consent (guardianship, curatorship, judicial protection; Article L.1121-8 of the French Public Health Code)
  • Not affiliated with a social security scheme or beneficiary of such a scheme (Article L.1121-8-1 of the French Public Health Code)
  • Persons participating in another study that includes an ongoing exclusion period (Article L.1121-12 of the French Public Health Code)
  • Failure to obtain written informed consent

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Główny cel: Inny
  • Przydział: Nie dotyczy
  • Model interwencyjny: Zadanie dla jednej grupy
  • Maskowanie: Brak (otwarta etykieta)

Broń i interwencje

Grupa uczestników / Arm
Interwencja / Leczenie
Eksperymentalny: Ramię eksperymentalne

For the 18F-FDG (fluorodeoxyglucose labelled with fluorine-18) PET scan, a dynamic protocol with the radiopharmaceutical injected directly under the scanner.

The dose injected will be the same as that used in routine clinical practice, i.e. calculated based on the patient's weight.

The patient must fast for 6 hours prior to the examination. The total duration of the dynamic PET scan is estimated at approximately 1 hour 30 minutes.

For the neuropsychological assessment, a series of standardised tests, validated for the assessment of cognitive functions, will be administered. This assessment will be carried out by neuropsychologists trained in the use of these tests and who administer them as part of their routine practice, or by a trained physiatrist specialising in disorders of the central nervous system. The neuropsychological assessment is expected to take 2 to 3 hours per visit for the patient.

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Change in Standardized Uptake Value (SUV)
Ramy czasowe: Before and at 6 months after surgical treatment of unruptured arteriovenous malformation
Changes in Standardized Uptake Value (SUV) measured by 18F-FDG positron emission tomography (PET) in different brain regions (arteriovenous malformation region, arteriovenous malformation hemisphere including the arteriovenous malformation region, arteriovenous malformation hemisphere excluding the arteriovenous malformation region, contralateral hemisphere)
Before and at 6 months after surgical treatment of unruptured arteriovenous malformation
Change in K1 Transfer Constant
Ramy czasowe: Before and at 6 months after surgical treatment of unruptured arteriovenous malformation
Change in the K1 transfer constant, representing the transfer of the tracer from the plasma compartment to the tissue compartment, measured by 18F-FDG positron emission tomography (PET) measured in different brain regions (arteriovenous malformation region, arteriovenous malformation hemisphere including the arteriovenous malformation region, arteriovenous malformation hemisphere excluding the arteriovenous malformation region, contralateral hemisphere). Unit : mL.g-1.min-1
Before and at 6 months after surgical treatment of unruptured arteriovenous malformation
Change in Ki Net Influx Rate Constant
Ramy czasowe: Before and at 6 months after surgical treatment of unruptured arteriovenous malformation
Change in Ki net influx rate constant measured by 18F-FDG positron emission tomography (PET) in different brain regions (arteriovenous malformation region, arteriovenous malformation hemisphere including the arteriovenous malformation region, arteriovenous malformation hemisphere excluding the arteriovenous malformation region, contralateral hemisphere). Unit : mL.g-1.min-1
Before and at 6 months after surgical treatment of unruptured arteriovenous malformation
Change in Cerebral Metabolic Rate of glucose (CMRglu)
Ramy czasowe: Before and at 6 months after surgical treatment of unruptured arteriovenous malformation
Change in cerebral metabolic rate of glucose (CMRglu) measured by 18F-FDG positron emission tomography (PET) in different brain regions (arteriovenous malformation region, arteriovenous malformation hemisphere including the arteriovenous malformation region, arteriovenous malformation hemisphere excluding the arteriovenous malformation region, contralateral hemisphere). Unit : µmol.100g-¹.min-¹
Before and at 6 months after surgical treatment of unruptured arteriovenous malformation

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Headache impact
Ramy czasowe: Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Headache impact assessed by the total score on the Headache Impact Test - 6 items (HIT-6) Total score between 36 and 78. A higher score indicates a greater functional impact.
Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Visual attention and processing speed
Ramy czasowe: Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Visual attention and processing speed assessed by completion time on the Trail Making Test - Part A (TMT-A)
Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Cognitive flexibility and executive control
Ramy czasowe: Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Cognitive flexibility and executive control assessed by completion time on the Trail Making Test - Part B (TMT-B)
Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Inhibition and selective attention
Ramy czasowe: Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Inhibition and selective attention assessed by completion times and number of errors on the Stroop Test
Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Working memory
Ramy czasowe: Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Working memory assessed by scores on the Digit Span subtest of the Wechsler Adult Intelligence Scale - Fourth Edition (WAIS-IV)
Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Global verbal episodic memory
Ramy czasowe: Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Global verbal episodic memory assessed by scores on the 16-item Free Recall / Cued Recall test (RL/RI-16)
Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Phonemic and semantic verbal fluency
Ramy czasowe: Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Phonemic and semantic verbal fluency assessed by the number of words produced on verbal fluency tests
Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Ecological executive functioning
Ramy czasowe: Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Ecological executive functioning assessed by raw scores and composite indices on the Behavior Rating Inventory of Executive Function - Adult Version (BRIEF-A)
Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Visual constructive abilities and visual memory
Ramy czasowe: Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Visual constructive abilities and visual memory assessed by scores on the Rey-Osterrieth Complex Figure Test
Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Visual attention and spatial exploration
Ramy czasowe: Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation
Visual attention and spatial exploration assessed by the number of crossed-out targets, omissions, and their spatial distribution in the Bell Test.
Before, at 3 months and 6 months after surgical treatment of unruptured arteriovenous malformation

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów (Szacowany)

1 maja 2026

Zakończenie podstawowe (Szacowany)

1 listopada 2028

Ukończenie studiów (Szacowany)

1 listopada 2028

Daty rejestracji na studia

Pierwszy przesłany

21 kwietnia 2026

Pierwszy przesłany, który spełnia kryteria kontroli jakości

4 maja 2026

Pierwszy wysłany (Rzeczywisty)

6 maja 2026

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

6 maja 2026

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

4 maja 2026

Ostatnia weryfikacja

1 maja 2026

Więcej informacji

Terminy związane z tym badaniem

Plan dla danych uczestnika indywidualnego (IPD)

Planujesz udostępniać dane poszczególnych uczestników (IPD)?

NIEZDECYDOWANY

Informacje o lekach i urządzeniach, dokumenty badawcze

Bada produkt leczniczy regulowany przez amerykańską FDA

Nie

Bada produkt urządzenia regulowany przez amerykańską FDA

Nie

Te informacje zostały pobrane bezpośrednio ze strony internetowej clinicaltrials.gov bez żadnych zmian. Jeśli chcesz zmienić, usunąć lub zaktualizować dane swojego badania, skontaktuj się z register@clinicaltrials.gov. Gdy tylko zmiana zostanie wprowadzona na stronie clinicaltrials.gov, zostanie ona automatycznie zaktualizowana również na naszej stronie internetowej .

Badania kliniczne na 18F-FDG PET imaging

Subskrybuj