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Dear FreeSurfer experts,

We have processed UKB data with FLAIR assisted pial segmentation using FS7.1.

The results differs quite a lot from using FLAIR assisted pial segmentation in FS6.0.

For details please see the reported issue on the freesurfer github page: MailScanner has detected a possible fraud attempt from "secure-web.cisco.com" claiming to be https://github.com/freesurfer/freesurfer/issues/849. Might be related to another issue reported here (though this is T2w assisted pial segmentation): MailScanner has detected a possible fraud attempt from "secure-web.cisco.com" claiming to be https://github.com/freesurfer/freesurfer/issues/747.

The FS pial segmentation for UKB data is prone to include dura if only T1w data is used, so assisting with FLAIR is quite detrimental.

Best regards,
Fredrik Magnussen