Fetal SHARD DWI output files

Hi all!

I’m working with the pre-processed fetal data. In the dwi/ file for each subject in fmriresults01/dhcp_dmri_shard_pipeline, there are two niftis labeled preproc - sub-XXX_ses-XXXX_desc-preproc_**fe**_dwi.nii.gz and sub-XXX_ses-XXXX_desc-preproc_**se**_dwi.nii.gz.

Could anyone explain the difference between these two? There doesn’t seem to be any distinction in this documentation, or on the SHARD Github repo.