Hello,
I had a Talairach QA check failure, with the error log indicating a Z = -8 which was below the criterion of z =-6.
I then used tkregister2 to attempt a manual alignment (no surf orig was available). After visual inspection, the subject and Talairach volumes looked really closely aligned already. I did some very conservative rotation and movement in the sagital plane, checked other planes, hit "SAVE REG" and then executed
recon-all -all -subjid MYFILENAMEHERE
in the subj directory. I then get the same error, with the same z score. I've tried several alignments (very little adjustment each time) with the same results.
I notice that when I hit SAVE REG there is a new 4 x 4 numerical matrix written to my xterm screen. The values look very very similar to those prior.
Is there a way to interpret these values to assist me in my manual alignment? Should I just bag it and use -notal-check? The majority of my patient set ran without errors.
Thank you!
Deane Aikins, PhD Director, Cognitive Neuroscience Laboratory National Center for PTSD Clinical Neuroscience Division Assistant Professor, Department of Psychiatry Yale School of Medicine