The project ID must be a 3 character project code, followed by a two digit study code, followed by an underscore and finally a 3 character site code.

Ex. ABC01_CMH

A Project Code will be assigned when you meet with the Neuroinformatics Platform Admin at your initial project on-boarding meeting. If you already use a project code in some other capacity (including but not limited to NGDB or TIGR Lab XNAT), please share this at the meeting as it is best to keep the same project code across platforms/databases.

The Study Code is used to distinguish unique studies within a larger project, including sub-studies or study variations. Some big projects or labs will have multiple studies under the same project.

One or more Site Codes will be used based on the location(s) of the study. See the Standardized Site Codes table for a list of current study sites and their corresponding site codes.

It is important that each project Subject is assigned exactly 1 Subject ID that is unique across the project. In multi-site or multi-modality projects, care must be taken to ensure the same Subject is not assigned multiple Subject IDs at different sites or across different modalities. Of equal importance is the precise Subject ID entry at every data entry occurence. A Subject ID typo can have significant consequences throughtout the Neuroinformatics Platform system.

The Subject ID must be the concatenation of the Project ID, an underscore and a Subject Code.

Ex. ABC01_CMH_00000001

The Subject Code denotes a specific person (or animal) within the study.

Guidelines for choosing an appropriate Subject Code:

• must be 4 to 8 characters long
• preferably contains only numeric digits, but can include uppercase letters if needed
• recomended to start at 00000001 and increment as necessary
• must not contain lowercase letters, symbols, or whitespace (spaces, tabs, etc)
• must not include PHI (e.g., diagnosis), case/control status, or other sensitive information
• must not contain the characters 'PHA' in positions 4-6, since these indicate "phantom" (non-human) images in XNAT
• must not contain any coding related to location, visit, or any other code that is not representative of the participant. (eg. BAD: ABC01_CMH_V10001 - where V1 represents the first visit)

If you have already started collecting data and your participants do not follow this naming convention, please indicate this at your Neuroinformatics Platform project on-boarding meeting as a name conversion script might need to be implemented.