- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT07769957
DIFFUSION WEIGHTED MRI FINDINGS IN FETUSES WITH AND WITHOUT FETAL GROWTH RESTRICTION
COMPARISON OF DIFFUSION WEIGHTED MAGNETIC RESONANCE IMAGING FINDINGS IN FETUSES WITH AND WITHOUT FETAL GROWTH RESTRICTION: THE IMPACT OF MIDDLE CEREBRAL ARTERY DOPPLER FINDINGS
This prospective observational study aims to compare fetal brain diffusion-weighted magnetic resonance imaging (DWI) findings in fetuses with and without fetal growth restriction (FGR) and to evaluate the association between middle cerebral artery (MCA) Doppler findings and regional apparent diffusion coefficient (ADC) values.
Participants will be classified into three groups: fetuses with FGR and normal MCA Doppler findings, fetuses with FGR and MCA Doppler redistribution, and appropriately grown for gestational age (AGA) healthy control fetuses with normal Doppler findings. Fetal DWI will be performed using a 1.5-Tesla MRI scanner, and ADC values will be measured in predefined brain regions, including the frontal, occipital, and temporal white matter, thalamus, pons, cerebellar hemispheres, and centrum semiovale.
The primary objective is to compare regional ADC values between fetuses with FGR and healthy controls. The secondary objective is to determine whether ADC values differ between FGR fetuses with normal MCA Doppler findings and those with MCA Doppler redistribution. The study also aims to evaluate the relationship between ADC values, gestational age, fetal biometric measurements, and Doppler parameters.
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Type d'étude
Inscription (Estimé)
Contacts et emplacements
Coordonnées de l'étude
- Nom: Doruk C Katlan
- Numéro de téléphone: +905353475411
- E-mail: dcek2000@yahoo.com
Lieux d'étude
-
-
-
Istanbul, Turquie (Türkiye)
- Recrutement
- Istanbul Training and Research Hospital Department of Obstetrics and Gynecology
-
Contact:
- Doruk C Katlan
- Numéro de téléphone: +905353475411
- E-mail: dcek2000@yahoo.com
-
Sous-enquêteur:
- Nebahat Uzunay
-
-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Adulte
Accepte les volontaires sains
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- Singleton pregnancy
- Gestational age between 28 and 38 weeks
- Maternal age between 18 and 45 years
- For the FGR groups: estimated fetal weight (EFW) below the 10th percentile and/or abdominal circumference (AC) below the 10th percentile
- For the control group: EFW and AC between the 10th and 90th percentiles, normal fetal Doppler findings, and no major structural anomaly on fetal anatomical examination
- Written informed consent for participation in the study
Exclusion Criteria:
- Multiple pregnancy
- Major fetal structural anomaly or diagnosed chromosomal abnormality
- Contraindication to MRI, such as an MRI-incompatible implant
- Maternal uncontrolled diabetes mellitus, significant thyroid disease, severe uncontrolled chronic hypertension, or other significant systemic chronic disease
- Maternal age below 18 or above 45 years
- Inability or unwillingness to provide informed consent or cooperate with study procedures
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
Intervention / Traitement |
|---|---|
|
AGA - Normal MCA
Appropriate for gestational age fetuses with normal MCA Doppler
|
Fetal diffusion-weighted magnetic resonance imaging (DWI) will be performed using a 1.5-Tesla MRI scanner.
Diffusion-weighted images will be acquired with b-values of 0 and 1000 s/mm², and apparent diffusion coefficient (ADC) maps will be generated.
Region-of-interest (ROI)-based ADC measurements will be obtained from predefined fetal brain regions.
|
|
FGR - Normal MCA
Growth restricted fetuses with normal MCA Doppler
|
Fetal diffusion-weighted magnetic resonance imaging (DWI) will be performed using a 1.5-Tesla MRI scanner.
Diffusion-weighted images will be acquired with b-values of 0 and 1000 s/mm², and apparent diffusion coefficient (ADC) maps will be generated.
Region-of-interest (ROI)-based ADC measurements will be obtained from predefined fetal brain regions.
|
|
FGR - Abnormal MCA
Growth restricted fetuses with abnormal MCA Doppler
|
Fetal diffusion-weighted magnetic resonance imaging (DWI) will be performed using a 1.5-Tesla MRI scanner.
Diffusion-weighted images will be acquired with b-values of 0 and 1000 s/mm², and apparent diffusion coefficient (ADC) maps will be generated.
Region-of-interest (ROI)-based ADC measurements will be obtained from predefined fetal brain regions.
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Regional Fetal Brain Apparent Diffusion Coefficient (ADC) Values
Délai: At the time of fetal MRI examination (28-38 weeks of gestation)
|
Apparent diffusion coefficient (ADC) values will be measured using region-of-interest (ROI) analysis on fetal diffusion-weighted MRI in the frontal, occipital, and temporal white matter, thalamus, pons, cerebellar hemispheres, and centrum semiovale.
Mean ADC values will be compared among fetuses with FGR and normal MCA Doppler, fetuses with FGR and MCA Doppler redistribution, and AGA healthy controls.
ADC values will be expressed in mm²/s.
|
At the time of fetal MRI examination (28-38 weeks of gestation)
|
Collaborateurs et enquêteurs
Parrainer
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
- Maladies urogénitales
- Processus pathologiques
- Maladies urogénitales féminines et complications de la grossesse
- Complications de grossesse
- Maladies fœtales
- Troubles de la croissance
- Maladies et anomalies congénitales, héréditaires et néonatales
- Conditions pathologiques, signes et symptômes
- Retard de croissance fœtale
Autres numéros d'identification d'étude
- ISTANBUL TRH - 26.03.2026 - 69
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
Informations sur les médicaments et les dispositifs, documents d'étude
Étudie un produit pharmaceutique réglementé par la FDA américaine
Étudie un produit d'appareil réglementé par la FDA américaine
Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .