I mean the hippocampal volume in the aseg... so, it's not normal?
Bruce Fischl https://www.mail-archive.com/search?l=freesurfer@nmr.mgh.harvard.edu&q=from:%22Bruce+Fischl%22 Sat, 26 Aug 2017 11:24:44 -0700 https://www.mail-archive.com/search?l=freesurfer@nmr.mgh.harvard.edu&q=date:20170826
do you mean the hippocampal volume in the aseg or in the subfields?
On Sat, 26 Aug 2017, anonymous anonymous wrote:
Hi all, Without noticing I run recon-all twice on the same scan of the same subject and we noticed there are some differences, at least in the hippocampal volume estimation.
Is it normal? If it is, why is it so?
Thank you so much for your help
This is a great community!
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no, I don't think so. There is some randomness in the algorithm (e.g. sampling paths through the volume), but I thought we used the same random seed each time to ensure repeatability. Was it on the same machine? What was your command line? And How big were the differences?
On Tue, 5 Sep 2017, Phoolan Devi wrote:
I mean the hippocampal volume in the aseg... so, it's not normal?
Bruce Fischl Sat, 26 Aug 2017 11:24:44 -0700
do you mean the hippocampal volume in the aseg or in the subfields? On Sat, 26 Aug 2017, anonymous anonymous wrote:
Hi all, Without noticing I run recon-all twice on the same scan of the same subject and we noticed there are some differences, at least in the hippocampal volume estimation.
Is it normal? If it is, why is it so?
Thank you so much for your help
This is a great community!
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
I've run many hundreds of scans repeatedly and found variance between versions of FreeSurfer, but identical output within a version. Something must have changed between runs. Perhaps you could try comparing the log files and see where the deviations begin.
Mike Schmidt
On Sep 5, 2017 10:54 AM, "Phoolan Devi" phoolandevi1989@gmail.com wrote:
I mean the hippocampal volume in the aseg... so, it's not normal?
Bruce Fischl https://www.mail-archive.com/search?l=freesurfer@nmr.mgh.harvard.edu&q=from:%22Bruce+Fischl%22 Sat, 26 Aug 2017 11:24:44 -0700 https://www.mail-archive.com/search?l=freesurfer@nmr.mgh.harvard.edu&q=date:20170826
do you mean the hippocampal volume in the aseg or in the subfields?
On Sat, 26 Aug 2017, anonymous anonymous wrote:
Hi all, Without noticing I run recon-all twice on the same scan of the same subject and we noticed there are some differences, at least in the hippocampal volume estimation.
Is it normal? If it is, why is it so?
Thank you so much for your help
This is a great community!
_______________________________________________ Freesurfer mailing listFreesurfer@nmr.mgh.harvard.eduhttps://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine athttp://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
_______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
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Phoolan Devi