Tests of Functional Magnetic Resonance Imaging Techniques
19 novembre 2021 mis à jour par: National Institutes of Health Clinical Center (CC)
Imaging Techniques in fMRI and fMRI Reproducibility: An NIH/FDA Interagency Collaboration
Background:
- Functional magnetic resonance imaging (fMRI) is used to study the brain. It takes a series of pictures that can be used to look at how the brain processes information. It is used to study problems with thinking, language, and movement, among other things. Researchers are working to develop new and better fMRI techniques. To test these techniques, they want to perform fMRI scans on healthy volunteers.
Objectives:
- To test different fMRI techniques in healthy volunteers.
Eligibility:
- Healthy volunteers at least 18 years of age.
Design:
- Participants will be screened with a physical exam and medical history.
- Participants will have fMRI scans of the brain. During these scans, they will be asked to perform simple tasks. These tasks may involve language, thinking, or motor skills. The scanning sessions will last up to 2 hours.
- Participants may be asked to return for additional fMRI scans over several years.
Aperçu de l'étude
Statut
Résilié
Les conditions
Description détaillée
Functional magnetic resonance imaging (fMRI) is a non invasive imaging technique that enables scientists to understand the biological basis of higher order cognitive functioning such as emotions, attention, language and visual processing.
It has been used as a research tool since the 1980 s. Recently, fMRI has received approval by the Center for Medicare and Medicaid Services (CMS) to be used clinically which we believe will drastically increase its use in clinical decision making by physicians in the very near future.
However, currently implemented imaging techniques have technical and physiologic limitations such as susceptibility artifacts, image distortions, physiological noise, and MRI induced energy deposition from radiomagnetic waves typically used in fMRI acquisitions that may potentially reduce the clinical effectiveness of this imaging modality.
This protocol is a unique technical development pilot study being conducted jointly by researchers at the National Institutes of Health (NIH) and the US Food and Drug Administration (FDA) to evaluate the performance of physiologic and technical factors of fMRI imaging methods and equipment that may affect image quality, reproducibility, and reliability in the clinical setting.
These studies are an important basis upon which improved regulatory evaluation of new functional imaging technologies can be performed as these technologies become increasingly used in patient care in the future.
Type d'étude
Observationnel
Inscription (Réel)
13
Contacts et emplacements
Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.
Lieux d'étude
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Maryland
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Bethesda, Maryland, États-Unis, 20892
- National Institutes of Health Clinical Center, 9000 Rockville Pike
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Critères de participation
Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.
Critère d'éligibilité
Âges éligibles pour étudier
18 ans à 110 ans (Adulte, Adulte plus âgé)
Accepte les volontaires sains
Non
Sexes éligibles pour l'étude
Tout
Méthode d'échantillonnage
Échantillon non probabiliste
Population étudiée
Healthy volunteers willing to come to NIH or are already part of an existing NIH protocol.
La description
- INCLUSION CRITERIA:
- Healthy volunteers, new or from current NIH protocols are eligible. Healthy volunteers will be defined according the history obtained from reported medical history, medical record (reported at registration), the MRI safety questionnaire, and a clinical grade noncontrast brain MRI.
- Willing to travel to the NIH for follow-up visits
- Greater than 18 years old
- Able to understand and sign informed consent.
- Bilingual or multilingual subjects can participate in this study as long as the subjects are also fluent in English. Subjects do not need to be native or monolingual speakers of English.
EXCLUSION CRITERIA:
The following criteria will be used to exclude subjects from participating in this protocol:
Implanted metal clips or wires of the type which may concentrate radiofrequency fields or cause tissue damages from twisting in a Magnetic field. Examples:
- Aneurysm clip, implanted neural stimulator,
- Implanted cardiac pacemaker, defibrillator, or certain other implanted electrical or metallic devices,
- Cochlear implant, ocular foreign body (metal shavings),
- Any implanted device (pumps, infusion devices, etc.),
- Shrapnel injuries,
- History of metal in head or eyes or other parts of the body.
- Vagus Nerve Stimulators (VNS)
- Subjects with tattoos that contain metal.
- Pregnant women
- Over 350 lbs because of the weight limit of the MRI table
- Prior surgery that may render performing the MRI to be unsafe.
- Untreatable claustrophobia otherwise requiring anesthesia or antianxiety medications that may alter the subject s ability to perform the tasks during fMRI scanning.
- Subjects will be asked to refrain from drinking or eating caffeinated foods or drinks the morning of the scan that can result in vessel vasoconstriction prior to the scan.
- Any contraindications that the Physician identifies from the Subject s reported history, MRI Safety Questionnaire and/or medical record.
Plan d'étude
Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
|---|
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Volunteers
Healthy Volunteers
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
evaluation of fMRI techniques
Délai: Study day 1, followup visit(s)
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To test different fMRI techniques in healthy volunteers.
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Study day 1, followup visit(s)
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Collaborateurs et enquêteurs
C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.
Les enquêteurs
- Chercheur principal: Nadia M Biassou, M.D., National Institutes of Health Clinical Center (CC)
Publications et liens utiles
La personne responsable de la saisie des informations sur l'étude fournit volontairement ces publications. Il peut s'agir de tout ce qui concerne l'étude.
Publications générales
- Hennig J, Speck O, Koch MA, Weiller C. Functional magnetic resonance imaging: a review of methodological aspects and clinical applications. J Magn Reson Imaging. 2003 Jul;18(1):1-15. doi: 10.1002/jmri.10330.
- Bennett CM, Miller MB. How reliable are the results from functional magnetic resonance imaging? Ann N Y Acad Sci. 2010 Mar;1191:133-55. doi: 10.1111/j.1749-6632.2010.05446.x.
- Pillai JJ. The evolution of clinical functional imaging during the past 2 decades and its current impact on neurosurgical planning. AJNR Am J Neuroradiol. 2010 Feb;31(2):219-25. doi: 10.3174/ajnr.A1845.
Liens utiles
Dates d'enregistrement des études
Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.
Dates principales de l'étude
Début de l'étude (Réel)
19 mars 2015
Achèvement primaire (Réel)
1 novembre 2017
Achèvement de l'étude (Réel)
1 novembre 2017
Dates d'inscription aux études
Première soumission
20 octobre 2012
Première soumission répondant aux critères de contrôle qualité
20 octobre 2012
Première publication (Estimation)
23 octobre 2012
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
22 novembre 2021
Dernière mise à jour soumise répondant aux critères de contrôle qualité
19 novembre 2021
Dernière vérification
1 novembre 2021
Plus d'information
Termes liés à cette étude
Mots clés
Autres numéros d'identification d'étude
- 130003
- 13-CC-0003
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 .