Hi Alan - If you're using a standard MGH diffusion sequence and you have a
Martinos account, look for the appropriate gradient table in this
directory:
$FREESURFER_HOME/diffusion/mgh-dti-seqpack/
You'll have to find out how many gradient directions are in your data
(that's the number of frames in your nifti file, minus the number of
frames that are b=0 images), and then get the corresponding file from the
directory above.
Hope this helps,
a.y
On Mon, 17 Feb 2014, Alan Francis wrote:
Hi Anastasia:
Yes I am using a standard MGH diffusion sequence.
thanks,
Alan
On Fri, Feb 14, 2014 at 10:20 PM, Anastasia Yendiki
<[email protected]> wrote:
Hi Alan - The gradient table is not saved in the nifti header.
Are you using a standard MGH diffusion sequence?
a.y
On Fri, 14 Feb 2014, Alan Francis wrote:
Hi Anastasia:
Hope all is well. I have DTI data for 65 brains.
They are in nifti format.
However, they do not have the bvecs and bvals
information. I searched the
web but they only have the conversion information
for dicom files.
I opened the header on MRICRON but how does one
convert these values into
table form.
thanks so much,
Alan
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