Hi Amir
I'm not sure I understand the question. You need to acquire them on each subject them same way you acquire your MPRAGE/T1-weighted image. Andre van der Kouwe (ccd) has some sequences you can use on his website if you want guidance on parameters and such.
cheers
Bruce
On Fri, 12 Jul 2013, amirhossein manzouri wrote:
Dear Bruce,
Would you please explain how and where to acquire FLAIR or T2 images to
solve the problem?
BR/Amir
On Thu, Jul 11, 2013 at 9:47 PM, ye tian <tianye730@gmail.com> wrote:
Dear Bruce and Doug,
Thank you very much!
PS: I searched through my data folder and didn't find T2 images. There
goes all my afternoon!
Ye
On Thu, Jul 11, 2013 at 1:29 PM, Bruce Fischl
<fischl@nmr.mgh.harvard.edu> wrote:
the fix is to acquire a FLAIR or T2 image. What you are
seing is the tentorium of the cerebellum which is very
difficult to distinguish from cortical gray matter on a
T1-weighted image. If you don't have either of those
datasets you probably will need to do manual editing Bruce
On Thu, 11 Jul 2013, ye tian wrote:
Sorry!
The attachments are really showing the same
structure, but in different
views. I have at least a hundred slices which
include it. Since the pial
surface is not extending into cerebellum,
should I just edit brainmask.mgz?
Is there a quicker fix to the problem than
manual editing?
Thank you very much!
Sincerely,
Ye
On Thu, Jul 11, 2013 at 12:30 PM, Douglas N
Greve
<greve@nmr.mgh.harvard.edu> wrote:
what do you mean by the structure in the
circle? The circles are
pretty big and have a lot of WM and GM
in them.
On 07/11/2013 12:55 PM, ye tian wrote:
Dear Doug,
Thank you very much!
Are you basically saying that the
structure in the circle
is not part of the cortex?
Sincerely,
Ye
On Thu, Jul 11, 2013 at 11:01 AM, Douglas N
Greve
<greve@nmr.mgh.harvard.edu
<mailto:greve@nmr.mgh.harvard.edu>>
wrote:
yes
On 07/11/2013 11:22 AM, ye tian wrote:
> Dear Freesurfers,
>
> Do you think I should delete the extra
dura-like structure
in the
> attached case?
>
> Thank you very much!
>
> Sincerely,
> Ye
>
>
>
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