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Magnetic Resonance Imaging (MRI) unlike X-rays and CT-scans does not use radiation to create a picture. MRI use as the name implies, magnetism to create pictures with excellent anatomical resolution. Functional MRIs are diagnostic tests that allow doctors to not only view anatomy, but physiology and function. It is for these reasons that MRIs are excellent methods for studying the brain.
In this study, researchers will use MRI to assess brain anatomy and function in X and Y chromosome variation, healthy volunteers, and patients with a variety of childhood onset psychiatric disorders. The disorders include attention deficit disorder, autism, congenital adrenal hyperplasia, childhood-onset schizophrenia, dyslexia, obsessive compulsive disorder, Sydenham's chorea, and Tourette's syndrome.
Results of the MRIs showing the anatomy of the brain and brain function will be compared across age, sex (gender), and diagnostic groups. Correlations between brain and behavioral measures will be examined for normal and clinical populations....
Full description
Study Description:
This natural history protocol will have participants come to the NIH for brain imaging, psychological/psychiatric testing, and genetic characterization. Our core hypotheses are that many of the most severe neuropsychiatric disorders of childhood onset are associated with deviations from the path of normal brain development, the neuroanatomical substrates of which can be detected by magnetic resonance imaging.
Objectives:
Primary Objectives:
The long-term objectives of the protocol are to (1) map the neuroanatomic and neurophysiological trajectories of brain development; and (2) discern the influences, for good or ill, on those trajectories from demographic clinical, genetic, and environmental factors. Approximately half of the participants in our sample are typically developing. Clinical populations in our sample include participants with a variety of brain-based disorders, such as Autism, Attention-Deficit/Hyperactivity Disorder, Childhood Onset Schizophrenia, Dyslexia, Sydenham s Chorea, and Tourette s Syndrome.
Secondary Objectives:
To characterize the relationships among measures of behavior and cognition as well as amongst multimodal measures of brain organization.
Endpoints:
Primary Endpoint:
T1-weighted structural neuroimaging data which enable us to characterize how a range of anatomical brain phenotypes vary as a function of age, sex, behavioral/cognitive traits, diagnostic status and genotype.
Secondary Endpoints:
Data analyses also consider how these factors relate to other outcomes of interest including; gene expression levels, functional metrics from in vivo neuroimaging, and questionnaire/interview-based assessment of clinical features.
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Inclusion and exclusion criteria
In order to be eligible to participate in this study, an individual must meet all of the following criteria:
Inclusion criteria for healthy controls
Participants consenting to participation in the study
-Over 3 years of age with no upper limit for age at time of enrollment.
Inclusion criteria for MRI scanner calibration project:
Participants will meet protocol criteria for adult healthy volunteers.
Inclusion criteria for affected participant populations:
-Male and female participants over 3 years of age with no upper limit for age (with the exception of the Down syndrome group - see below). Currently meet criteria for at least one of the following:
Additional Inclusion criteria for Down Syndrome participants:
Inclusion criteria for parents and siblings of affected participant populations:
Participants consenting to participation in the study
EXCLUSION CRITERIA:
NIMH staff and their immediate family are excluded from participation.
Exclusion criteria for healthy controls:
Exclusion criteria for all affected participant populations, including parents and siblings of the affected participants:
6,000 participants in 1 patient group
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Central trial contact
Francois M Lalonde, Ph.D.
Data sourced from clinicaltrials.gov
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