Dear Colleagues,
we are using Realign and Unwarp (spm_realign.m, spm_uw_estimate.m, and
spm_uw_apply.m) with 4D-NIfTI data which gives very nice results.
However, these m-routines seem to change the NIfTI-header. Before
starting the realignment, our header shows
time_units ms
pixdim4 2000.0000000000
which is correct. After using realign and unwarp, the NIfTI header shows
time_units s
pixdim4 1.0000000000
This might be a problem when further programs are using the repetition
time from the NIfTI header.
With best wishes,
Karsten
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