The ABCD Study, in partnership with the NIMH Data Archive (NDA), is releasing fast-track data containing unprocessed neuroimaging data from ABCD Study participants to date, as well as basic participant demographics (age, sex), including:
- High-resolution structural data (3D T1 – and T2 – weighted scans)
- Advanced diffusion MRI (multiple b-values and directions)
- Resting State fMRI
- Task fMRI (Monetary Incentive Delay, Stop-Signal, and Emotional N-Back), along with raw E-Prime task files for each fMRI run
Neuroimaging data are collected using a harmonized Human Connectome protocol, developed for the ABCD Study, and supported across all three major MRI scanner platforms (Siemens, General Electric, and Philips). Fast track data are in DICOM format as provided by the MRI scanners and have not undergone quality control or curation. As such, these data are most suitable for technical methods development, as the DICOM images would require pre-processing (e.g., distortion correction, movement correction, alignment) to be suitable for data analysis. The ABCD Study is designed to include a representative population that reflects the demographics of the U.S., however these interim data may not capture that diversity as enrollment is not yet complete. Fast-track data will be released monthly.
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