mri_diff finds no differences in the mri/orig/001.mgz's but the checksums are different. In fact, their sizes are slightly different.
-----Original Message----- From: freesurfer-bounces@nmr.mgh.harvard.edu [mailto:freesurfer- bounces@nmr.mgh.harvard.edu] On Behalf Of Bruce Fischl Sent: Wednesday, February 10, 2016 3:45 PM To: Freesurfer support list Subject: Re: [Freesurfer] comparing multiple runs on the same scan
Hi Don
are you saying the 001.mgz is different when created from the same dicom data? Can you run mri_diff on it to see what the difference is?
cheers Bruce On Wed, 10 Feb 2016, Krieger, Donald N. 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