Tests of Functional Magnetic Resonance Imaging Techniques
19. november 2021 opdateret af: 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.
Studieoversigt
Status
Afsluttet
Betingelser
Detaljeret beskrivelse
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.
Undersøgelsestype
Observationel
Tilmelding (Faktiske)
13
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
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Maryland
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Bethesda, Maryland, Forenede Stater, 20892
- National Institutes of Health Clinical Center, 9000 Rockville Pike
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Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
18 år til 110 år (Voksen, Ældre voksen)
Tager imod sunde frivillige
Ingen
Køn, der er berettiget til at studere
Alle
Prøveudtagningsmetode
Ikke-sandsynlighedsprøve
Studiebefolkning
Healthy volunteers willing to come to NIH or are already part of an existing NIH protocol.
Beskrivelse
- 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.
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Kohorter og interventioner
Gruppe / kohorte |
|---|
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Volunteers
Healthy Volunteers
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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evaluation of fMRI techniques
Tidsramme: 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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Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Efterforskere
- Ledende efterforsker: Nadia M Biassou, M.D., National Institutes of Health Clinical Center (CC)
Publikationer og nyttige links
Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.
Generelle publikationer
- 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.
Hjælpsomme links
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart (Faktiske)
19. marts 2015
Primær færdiggørelse (Faktiske)
1. november 2017
Studieafslutning (Faktiske)
1. november 2017
Datoer for studieregistrering
Først indsendt
20. oktober 2012
Først indsendt, der opfyldte QC-kriterier
20. oktober 2012
Først opslået (Skøn)
23. oktober 2012
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
22. november 2021
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
19. november 2021
Sidst verificeret
1. november 2021
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Andre undersøgelses-id-numre
- 130003
- 13-CC-0003
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .