Standard · 1.11.1 · 2026-02-19

Brain Imaging Data Structure

Maintained by BIDS community

What it helps you do

BIDS supports dataset layout, filenames, participants, sessions, acquisition metadata, events, coordinate systems, and derivatives across MRI, PET, EEG, MEG, iEEG, microscopy, and related modalities.

  • Imaging
  • Neuroscience
PlanAcquireHarmonizeExchangeLearn + reuse

01

Where it fits and where it does not

Use these four checks before committing implementation time.

Use it when
Human- and machine-readable packaging of neuroimaging and behavioral studies for validation, sharing, and reproducible analysis.
Limits
Passing BIDS validation proves encoded structure, not image quality, biological plausibility, complete metadata, de-identification, or analysis validity. Draft BEPs are not released specification content.
Best for
Imaging and Neuroscience teams working across Acquire → Harmonize → Exchange → Learn + reuse.
Maturity
EstablishedSuitable for production assessment. Pin the exact release and any implementation profile.

02

See it in the workflow

This view shows the input, the change the standard introduces, and the resulting output.

  1. InputWhat starts

    Imaging and Neuroscience source data, metadata, and local mappings

  2. BIDSWhat changes

    Use BIDS as a pinned standard across Acquire → Harmonize → Exchange → Learn + reuse

  3. OutputWhat becomes possible

    A handoff the next system or team can validate against the same release

Readiness gatePassing BIDS validation proves encoded structure, not image quality, biological plausibility, complete metadata, de-identification, or analysis validity. Draft BEPs are not released specification content.

03

A concrete example

A multi-site MRI study retains source DICOM, converts to a pinned BIDS release, validates every snapshot, and records conversion and derivative provenance separately.

Why it matters: Consistent cohort, acquisition, event, and derivative structure supports scalable imaging ML, but labels, QC, confounding, de-identification, and split governance remain separate.

04

What it fits with

DICOM commonly supplies source clinical images before BIDS conversion; BIDS organizes study-level files while NWB deeply models neurophysiology sessions. DANDI and OpenNeuro operationalize BIDS validation.

05

Implementation starter

Start with one bounded handoff. Pin, test, and review it before scaling.

  1. Define one handoff, its accountable owner, and the decision BIDS must support.

  2. Pin the exact version and companion artifacts: 1.11.1 · 2026-02-19.

  3. Map one representative input to the required standard artifacts.

  4. Test the result against the canonical source and record every exception.

  5. Preserve the source data, mappings, and review evidence before scaling.

06

Test the main limitation

Risk

Passing BIDS validation proves encoded structure, not image quality, biological plausibility, complete metadata, de-identification, or analysis validity. Draft BEPs are not released specification content.

Test

Run one representative end-to-end pilot and record exactly where BIDS loses context, needs an extension, or depends on another standard.

Risk

Machine-readable output may still be unfit for analysis or ML.

Test

Test the output for missing context, provenance, terminology alignment, time leakage, and the intended downstream decision. Consistent cohort, acquisition, event, and derivative structure supports scalable imaging ML, but labels, QC, confounding, de-identification, and split governance remain separate.

07

Official resources

Specifications, diagrams, examples, and guides from the organizations that maintain them.

  • Primary source1.11.1 · 2026-02-19

    BIDS 1.11.1 specification

    Official publisher or steward guidance for this standard profile.

    Publisher
    BIDS community
    Open official source

Next action

Put this profile in context

Compare its role with adjacent standards or place it inside an end-to-end data pathway before choosing an implementation.