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What is OASIS?

The Open Access Series of Imaging Studies (OASIS) is a project aimed at making MRI data sets of the brain freely available to the scientific community. By compiling and freely distributing MRI data sets, we hope to facilitate future discoveries in basic and clinical neuroscience. OASIS is made available by Dr. Randy Buckner at the Howard Hughes Medical Institute (HHMI) at Harvard University, the Neuroinformatics Research Group (NRG) at Washington University School of Medicine, and the Biomedical Informatics Research Network (BIRN).

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OASIS: Cross-sectional MRI Data in Young, Middle Aged, Nondemented and Demented Older Adults
Summary   This set consists of a cross-sectional collection of 416 subjects aged 18 to 96.  For each subject, 3 or 4 individual T1-weighted MRI scans obtained in single scan sessions are included.  The subjects are all right-handed and include both men and women.  100 of the included subjects over the age of 60 have been clinically diagnosed with very mild to moderate Alzheimer’s disease (AD).  Additionally, a reliability data set is included containing 20 nondemented subjects imaged on a subsequent visit within 90 days of their initial session.
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Actions   Browse: cross-sectional data  |  reliability data    Spreadsheet: csv  |  xls    Images: ftp  |  dvd  |  web services


OASIS: Longitudinal MRI Data in Nondemented and Demented Older Adults
Summary   This set will consist of a collection of ~150 subjects aged 60 to >90 scanned multiple 2 or 3 times over an extended period (> 1 year between-scan interval). For each subject, 3 or 4 individual T1-weighted MRI scans obtained in each scan session are included.  The subjects will all be right-handed and include both men and women.  The set will include individuals who entered non-demented and remained non-demented, individuals who entered non-demented and converted to demented, and individuals who entered demented.
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OASIS: Resting State Functional MRI Data in Young Adults
Summary   This set will consist of ~25 young adult subjects.  For each subject, T1-weighted and resting state BOLD MRI scans obtained in single scan sessions are included.  The subjects are all right-handed and include both men and women.
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