3D func/bold BIDS sidecar

1

The BIDS sidecar field SliceTiming is not relevant for 3D BOLD sequences like 3DEPI and looping-star. Missing this field causes the bids-validator to raise the warning:

code: 13 - SLICE_TIMING_NOT_DEFINED

dcm2niix identifies these scans with the MRAcquisition type:

	"MRAcquisitionType": "3D",

Is this the correct way to specify this? An if so, should I add a github issue to have the bids-validator updated to detect this?

2

It seems like that check is implemented for ASL data, but not for fMRI sequences, so I’d consider this a bug in BIDS. It might be better to open the issue in the bids specification repo than the validator repo.