Thanks very much for getting back so quickly.
Please pardon.
I’m sure this answer must be in lots of other places.
Best - Don
From: freesurfer-bounces@nmr.mgh.harvard.edu [mailto:freesurfer-bounces@nmr.mgh.harvard.edu]
On Behalf Of dgw
Sent: Wednesday, February 10, 2016 3:17 PM
To: Freesurfer support list
Subject: Re: [Freesurfer] comparing multiple runs on the same scan
Doug responded to your previous mail with this:
Even on the same operating system they will be different because there
is stuff in the header that will change. Use mri_diff (volumes,
segmentations, and surface overlays) or mris_diff for surfaces to check
whether they are different.
hth
d
On Wed, Feb 10, 2016 at 2:14 PM, Krieger, Donald N. <kriegerd@upmc.edu> wrote:
We would like to confirm that we are getting identical results from multiple freesurfer runs on the same data set.
To do so we are comparing identically named files using md5sum and would very much appreciate your thoughts on our results. For multiple files, we concatenate them and pipe the
output into md5sum. Below is a table showing what we’ve found so far. I take hope from the positive matches we get from all of the .annot files and from the fact that 001.mgz does not match. This latter suggests that there is a date or something embedded
in some of the files from separate runs which defeats the match.
Please let us know what you know about this and thanks.
|
file(s) |
md5sum result |
|
label/*.annot |
match |
|
label/*.label |
match |
|
mri/wmparc.mgz |
mismatch |
|
surf/qsphere.nofix
surf/rh.sphere |
mismatch |
|
mri/orig/001.mgz |
mismatch |
|
mri/transforms/talairach.m3z |
match |
|
mri/transforms/talairach.m3z.inv.x.mgz
mri/transforms/talairach.m3z.inv.y.mgz
mri/transforms/talairach.m3z.inv.z.mgz |
mismatch
mismatch
mismatch |
Best - Don
Don Krieger, Ph.D.
Department of Neurological Surgery
University of Pittsburgh
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