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Brain Imaging Data Structure (BIDS) Specification

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builds upon @effigies last commit on DWI https://github.com/bids-standard/bids-specification/commit/1d929e587775fa09489f95c94ffc0470b76020eb -- adding the FA (since scanners generate TRACE, ADC and FA) I'm not expert in diffusion, but seems logical thing to do

enhancement
diffusion MRI

fixes https://github.com/bids-standard/bids-specification/issues/1487

schema-structure
exclude-from-changelog

Replaces #1835, so that this is a PR **not from a fork**, but from the org itself. This is an attempt to work around the "Pass secrets to builds from...

In BIDS we have three types of columns: 1) Fully-defined columns, such as `participant_id` or the `type` column in `electrodes.tsv`. These are ones where having JSON-schema style definitions of values...

schema
schema-code
exclude-from-changelog
needs review

Re-commit of b7a3ab625a7c1994d3984f3eb79c4811449e7e2b that was rejected as a late addition to #1807; re-posting here for separate review as suggested. I've become progressively convinced that the ability to overload metadata fields...

inheritance
needs implementation

- Rationale 1 (major): BIDS standard already provides reasonable structure to formalize organization of various components of a neuroscientific data project: where to place code, original (source) data, derivaitve data,...

This PR is intended to supersede #1831 with additional content, as well as resolve #1862. Rather than incrementing the spec with different aspects of scanner-generated DWI derivatives, as happened previously...

diffusion MRI
raw

### Describe your problem in detail. Prompted by work happening in #1831, but is actually a consequence of #1725. Having acquired data with all scanner-generated derivatives enabled, I can confirm...

bug
diffusion MRI

Rendered proposal: https://bids-specification--1856.org.readthedocs.build/en/1856/derivatives/atlas.html --- This is a proposal to achieve the aims of BEP 38 as derivative datasets, without the need to introduce a new `DatasetType`. The structure of derivatives...

BEP

Grepping for `AcquisitionDuration` on OpenNeuro we see: ```console ❯ for DS in ds00*; do grep AcquisitionDuration $DS/**/*bold.json; done 2>/dev/null | awk -F/ '{ if ($1 != prev) { print; prev...

bug
discussion