11 Jan
2013
11 Jan
'13
12:03 p.m.
Hi Juergen, how are you judging whether a volume is flipped or not? The freesurfer tools should display properly regardless of the qfactor as long as the qform matrix is correct. doug
On 01/11/2013 08:40 AM, Jürgen Hänggi wrote:
NIFTI q-factor
Dear FS experts
Please can you confirm that the NIFTI q-factor in the NIFTI header has to be negative (e.g. -1) in order to have correct right and left orientation.
When the NIFTI q-factor is positive in my T1-w. and DTI images, then the left and the right hemisphere seem to be flipped.
Thanks in advance Regards Jürgen Hänggi
--
Douglas N. Greve, Ph.D.
MGH-NMR Center
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