BIDS naming for functional phase acquisitions

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1

I’ve come across some functional epi files that have corresponding phase acquisitions to assess respiratory effects. I haven’t seen anything in the BIDS-spec pertaining to this acquisition type, so I was wondering if it would be appropriate to name the files as such (assuming they’re considered functional and not physiological data):

sub-101_ses-01_task-bart_run-01_acq-phase_bold.nii.gz
sub-101_ses-01_task-bart_run-01_acq-phase_bold.json
2

The _phase suffix is supported under task fMRI (see here).

These data do fall under func/, although we chose not to use an entity (e.g., part-[phase|magnitude]) to keep from breaking most workflows (since they’d generally grab both phase and magnitude data automatically).

I believe that _phase data should pass the BIDS validator from version 1.3.4 on.

3

Got it, thanks @tsalo