Early [18F]-FDG PET Dynamic Analysis in Brain Metastases After Radiotherapy. (DYNFDGTEP)
Interest of Early Dynamic Analysis of [18F]-FDG PET Images in the Differential Diagnosis Between Recurrence and Radionecrosis in Brain Metastases.
Various treatment options are available for brain metastases, depending on factors such as lesion site or number lesions. Radiotherapy is a commonly used treatment. Following stereotactic radiotherapy for brain metastases, a potential complication, namely brain radionecrosis, can occur subsequently. It is essential to differentiate between this radionecrosis and lesion recurrence in order to determine the appropriate treatment approach. Contrast-enhanced magnetic resonance imaging (MRI) is the most widely used technique for monitoring brain metastases. Therefore, patients undergo routine MRI at 3 months and during subsequent follow-ups, but if the lesion evolve and if distinguishing between recurrence and radionecrosis is challenging, an [18F]-FDG PET scan is then prescribed by oncologists or radiotherapists during follow-up consultations. As part of the standard patient management protocol, a 10-minute image acquisition begins after a 45-60 minutes wait following the radiotracer injection. A second image acquisition is then conducted 3-4 hours later. For both acquisitions, a low-dose X-ray scanner is synchronously coupled to allow attenuation correction of the PET images.
Patient for whom a [18F]-FDG PET cerebral examination has been prescribed as part of the usual management of brain metastases will be eligible to the protocol. If the patient agrees to participate, an early imaging session is initiated immediately upon radiotracer injection, lasting 15 minutes in addition to the standard acquisition protocol.
Studieöversikt
Status
Betingelser
Intervention / Behandling
Studietyp
Inskrivning (Beräknad)
Kontakter och platser
Studiekontakt
- Namn: Antoine GIRARD
- Telefonnummer: 33+3 22 45 03 81
- E-post: Girard.Antoine@chu-amiens.fr
Studieorter
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Amiens, Frankrike
- Rekrytering
- CHRU Amiens
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Underutredare:
- Alexandre COUTTE, MD
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Underutredare:
- Mathieu BOONE, MD
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Kontakt:
- Antoine GIRARD, MD
- Telefonnummer: 33+3 22 45 03 81
- E-post: Girard.Antoine@chu-amiens.fr
-
Underutredare:
- Ismaël NEJJAR, MD
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Underutredare:
- Marc-Etienne MEYER, Pr
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Underutredare:
- Chalabia FERGANI, MD
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Underutredare:
- Florent Hives, MD
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Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
- Vuxen
- Äldre vuxen
Tar emot friska volontärer
Testmetod
Studera befolkning
Beskrivning
Inclusion Criteria:
- Patient referred for cerebral [18F]-FDG PET examination prescribed as part of his usual medical care for brain metastasis.
- Age ≥ 18 years old
- Affiliation to a social security program
- Ability of the subject to understand and express his consent
Exclusion Criteria:
- Age under 18 years old
- Person under guardianship or curatorship
- Pregnant or breastfeeding woman
- Primary brain tumors
- Brain metastases from renal, thyroid or other cancers known to have low avidity for [18F]-FDG
Studieplan
Hur är studien utformad?
Designdetaljer
Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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ratio between lesion maximum activity and controlateral healthy tissue activity
Tidsram: day1
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Value of the measurement of the ratio of the maximum activity within the lesion to the average activity within the region of interest of the contralateral healthy tissue.
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day1
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Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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association between kinetic uptake parameters and diagnosis
Tidsram: 12 months
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association between kinetic uptake parameters from compartmental models and the differential diagnosis of radionecrosis and recurrence of brain metastases treated by radiotherapy
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12 months
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Samarbetspartners och utredare
Studieavstämningsdatum
Studera stora datum
Studiestart (Faktisk)
Primärt slutförande (Beräknad)
Avslutad studie (Beräknad)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Faktisk)
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- PI2026_843_0020
Plan för individuella deltagardata (IPD)
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