ABCD Fast Track Data

The ABCD fast-track data release contains 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. Researchers intending to use Fast Track data should take note of the appropriate Acknowledgement language to include in any public disclosure of results.

How to Get Fast Track Data

All ABCD Fast Track Data are available through the image03 structure for raw imaging data in NDA. If you are interested in downloading some or all of the Fast Track dataset, and have access only to the ABCD dataset, you can follow these steps:

  1. Add the image03 structure to your NDA Filter Cart and click "Download/Add to Study."*
  2. Create a data package without including "associated files" - this will omit the actual image files.
  3. Download your package using the Download Manager. It will include only the image03 text file.
  4. Follow the instruction in the cloud tools tutorial to download the specific files you are interested in.

Please note if you have access to other imaging datasets in NDA, these will also be available in the image03 structure and you must also apply an ABCD Collection to restrict your results to ABCD data only following these steps:

  1. Add the image03 structure to your NDA Filter Cart*
  2. Add the ABCD Collection to your NDA Filter Cart* and click "Download/Add to Study"
  3. On the packaging page, click Deselect All on the "Data Structures panel on the right, then re-select image03.
  4. Create a data package without including "associated files" - this will omit the actual image files.
  5. Download your package using the Download Manager. It will include only the image03 text file.
  6. Follow the instruction in the cloud tools tutorial to download the specific files you are interested in.

*Please review the instructions on how to access data for more information about different queries and the Filter Cart

ABCD Fast Track Data are potentially dynamic data sets released on an ongoing basis.  These data are available in the ABCD Collection. A researcher who wishes to use Fast Track Data must define an NDA Study to identify the raw data cases they've used, which is assigned a DOI. If any records in Fast Track Data are corrected, this change is applied to the original data set and documented in a Fast Track change report. The illustrations below provide an explanation of the data and how it might be changed post-release. Visit this page for updates concerning Fast Track Data.