Hi Alison,

This is from a change that went in at the beginning of the year.
Since the I-files contain the locations of the slices, that is
overriding what you entered. Perhaps that needs to be changed.
If you enter that information on the command line, that should
override the contents of the I-file.

However, note that the files have z coordinates that differ by
4.36446, not 5. But that may be a side effect of the oblique
slices... At any rate, you might verify the thickness.

If you want to inspect the contents of the I-files, you can use
the file_tool program. Note the second example:

file_tool -ge_header -infiles I.*
file_tool -ge_header -infiles I.* | grep zoff

---

But since you know your I-files best, let me just explain how
to fix that. First note that 3dZregrid is not the way to go.
That program resamples your data to fit the new grid. But you
do not want to change your data, you just want to alter the
slice thickness to 5.0 mm.

For that, use 3drefit, it does not touch the data, it just alters
the contents of the HEAD file. So you may want to try a command
like:

3drefit -zdel 5 T1_new+orig

Once you do this, use "3dinfo T1_new+orig" to verify that the
results match what you have shown on your command line.

- rick