Were these oblique acquisitions?
By default, dcm2nii and MRIConvert rotate the bvecs according to the
orientation info for oblique acquisitions, whereas it sounds like
mri_convert might not be doing that.
cheers,
-MH
--
Michael Harms, Ph.D.
--
Hi (and thanks for the speedy reply!),
There may be some obliquity (from 3dinfo of the created nifti file):
Data Axes Tilt: Oblique (1.770 deg. from plumb)
I guess if the data were oblique, shouldn't that tilt be included in
the gradients? Or am I missing something?
And assuming that that inf
The gradient directions, at least as reported in Siemen's DICOMs, are NOT
rotated into the imaging axes. Rather, they are reported in the
coordinate frame of the gradient system. So the conversion tool has to
account for this. Doug will have to comment as to whether mri_convert has
an option to
Well, I was using Freesurfer for some other things, and was thinking
that everything would be more consistent if using Freesurfer for all,
but perhaps yes, dcm2nii will be the way to go for this instead.
Thanks,
pt
On Thu, Sep 12, 2013 at 5:18 PM, Harms, Michael wrote:
>
> The gradient direction
