Hi Yu,
It is hard to know the affect of the quatern and
qoffset values (why would the offsets differ? that
is strange). But it looks like the TR has changed
from 2.0 to 4.0 between them, as well as that
slice_duration, both of which are a bit strange.
You could see what either Dimon or dcm2niix_afni do
with the Dicom files, just for comparison. It would
be good to know what the correct values are.
- rick