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Home > "S" Clinical Trials Conditions > Study of New Magnetic Resonance Imaging Methods of the Brain  Study of New Magnetic Resonance Imaging Methods of the Brain
Study of New Magnetic Resonance Imaging Methods of the Brain
For Condition: Healthy
Status: Recruiting
Sponsor(s): National Institute of Neurological Disorders and Stroke (NINDS) ,
Synopsis: The purpose of this investigation is to develop improved magnetic resonance imaging (MRI) techniques and hardware for studying brain function. MRI is a diagnostic tool that provides information about brain chemistry and physiology. This study will evaluate new MRI methods for monitoring blood flow to regions of the brain in response to simple tasks. The MRI machine used in this study is more powerful than those in most hospitals, permitting a higher visual resolution. Normal healthy volunteers over 18 years old may be eligible for this study. Candidates will be screened with a medical history and questionnaire, and a neurological examination. Study participants will have a yearly MRI scan. For this procedure, the subject lies on a stretcher that is moved into a donut-shaped machine with a strong magnetic field. A lightweight circular or rectangular coil-a device that improves the quality of the images-may be placed on the head. The scan time varies from 20 minutes to 3 hours; most scans last between 45 and 90 minutes. During the scan, the subject may perform simple tasks, such as listening to tapes, tapping a finger, moving a hand, watching a screen, or smelling a fragrance. More complex tasks may require thinking about tones or pictures and responding to them by pressing buttons. Information from this study will be used to develop better imaging methods that will, in turn, permit a greater understanding of normal and abnormal brain behaviors.
Details: The goal of this protocol is to improve the spatial resolution in MRI studies of the changes in hemodynamics that occur in the central nervous system (CNS) in healthy controls in response to sensory, motor, or cognitive stimulation. CNS functional changes will be characterized by measuring blood flow, blood transit time, and blood oxygenation. These studies are required in order to develop and implement new imaging techniques for research and clinical applications. The NIMH/NINDS recently acquired a 3.0 T whole body magnetic resonance (MR) unit, located in the In Vivo NMR Research Center. This complements the already existing 1.5 T MR units.
Eligibility:
Study Type: Observational, Natural History
Minimum Age/Maximum Age: /
Genders: Both
Protocol Entry Criteria: INCLUSION CRITERIA: Any neurologically and psychiatrically normal, male or female, healthy volunteer over 18 years old. Subjects must be capable of understanding the procedures and requirements of this study. Subjects must be willing to sign an informed consent document. EXCLUSION CRITERIA: A subject will be excluded if he/she has a contraindication to MR scanning such as the following: aneurysm clip; implanted neural stimulator; implanted cardiac pacemaker or auto-defibrillator; cochlear implant; ocular foreign body (e.g. metal shavings or insulin pump) and any pre-existing eye conditions. Subjects who underwent brain surgery, who have a neurological lesion, a psychiatric history or a history of migraine will also be excluded from this study. The contraindications to MRI at 1.5 T and 3.0 T are identical.
Total Enrollment: 240
Location and Contact Information:
National Institute of Neurological Disorders and Stroke (NINDS) *Recruiting*
Bethesda, Maryland, 20892
United States
Recruiting Patient and Public Liaison Office 1-800-411-1222
Additional Information:
Study ID Numbers: 000082; 00-N-0082
Study Start Date: February 17, 2000
Record last reviewed: February 13, 2004
Additional information available at: clinicaltrials.gov
Clinicaltrials.gov Reference link: NCT00004577
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Study of New Magnetic Resonance Imaging Methods of the Brain
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