Thank you for this helpful response!

One follow-up question - I realize that images should be processed using the same version and OS. For my current study, all images but one have been processed on a previous version of FreeSurfer and it will not be possible for me to process this one remaining image in the same way. I realize this situation is not ideal, but am now wondering what remaining options might be best:

Option 1 - drop this image from my study (which would be unfortunate given the expense associated with collecting the data!)

Option 2 - reconstruct this image using the new version of FreeSurfer (and acknowledge this in my paper) - and if I go this route, should I reconstruct the pre-intervention image of this same brain on this new version of FreeSurfer (and re-run the longitudinal processing stream for this one brain).

I guess I'm asking how serious it really is to use a different version of FreeSurfer for one participant in the longitudinal stream?

Thanks for your help,

Linette

________________________________ From: Z K zkaufman@nmr.mgh.harvard.edu Sent: February 15, 2017 1:17 PM To: freesurfer@nmr.mgh.harvard.edu; Linette Savage Subject: Re: [Freesurfer] recon-all error

Hello Linette,

You are getting the dreaded mri_nu_correct.mni correct. This error occurs when using freesurfer version 5.3 on newer linux platforms. This issue has been fixed in the latest release of freesurfer (v6.0) which I recommend you download and install.

https://surfer.nmr.mgh.harvard.edu/fswiki/DownloadAndInstall

DownloadAndInstall - Free Surfer Wikihttps://surfer.nmr.mgh.harvard.edu/fswiki/DownloadAndInstall surfer.nmr.mgh.harvard.edu Important Note: When processing a group of subjects for your study, it is essential to process all your subjects with the same version of FreeSurfer, on the same OS ...

-Zeke

On 02/14/2017 11:13 PM, Linette Savage wrote:

Hello,

New to freesurfer using Linux (successfully reconstructed several images on a mac) - can you help me determine how to correct the error in this attached attempt at a recon?

Many thanks,

Linette

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