This can also happen if the head is oriented in a strange way. This can happen with older patients that tend to tilt their head back.
On 11/10/2016 08:27 PM, Bruce Fischl wrote:
Hi John
it means that the talairach transform that was computed was extremely unlikely and deemed to be probably incorrect. Frequently this happens if you start with images (like analyze) that don't contain accurate direction cosine information. You can check this by bringing one of the volumes in freeview and checking to make sure that the anatomical directions we show (e.g. anterior/posterior) correspond to the true anatomy. Sometimes abnormal anatomiies like huge ventricles can also make it fail, but you need to figure out which one it is before deciding what to do
cheers Bruce
On Fri, 11 Nov 2016, John Anderson wrote:
Dear Freesurfer experts, I ran the following command on a T1 image recon-all -subjid 089 -all -qcache
and I got the following error message:
talairach_afd -T 0.005 -xfm transforms/talairach.xfm
ERROR: talairach_afd: Talairach Transform: transforms/talairach.xfm ***FAILED*** (p=0.0344, pval=0.0034 < threshold=0.0050)
I highly appreciate an explanation for the meaning of this error and how to fix it.
Best John
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