Hello, there,
I have two questions about FreeSurfer default atlas and template,
Will Freesurfer team build an atlas or template using 3T scans in future?
Will Freesurfer team build an atlas or template using patients with disease in
future?
Thanks!
Guang
Hi:
Freesurfer Developer team: did you published any paper related to the
reliability of cortical thickness ?... How you measure that reliability ?..
And, the reliability of the volumetry of different segmented brain structures
(such as the hippocampus) ?... And, in the case of the cortical
Hi Guang,
there are a number of atlases in FreeSurfer and some of them contain
disease populations (Alzheimer's). As for 3T, we might do this, although we
prefer to focus our efforts on making the tools insensitive to field
strength.
cheers
Bruce
On Wed, 10
Mar 2010, Guang Zeng wrote:
Hello, Martin,
Thanks a lot for your reply, but I am still not very clear about few issues.
I think that is because of my unclear description.
What happen is:
I have two scans which I want to do longitudinal analysis, however, when I
finish the
cross-sectional analysis, I found the results
OK I get it. There was a confusion about adding control points and
adding new time points. My answer concerns adding new time points, so
you can ignore it. Do not add any edited results as new time points.
Concerning your question see the discussion on this list from Feb 12
that treats exactly
Hi Gonzalo,
On Fri, 2010-03-05 at 16:47 -0300, Gonzalo Rojas Costa wrote:
Hi:
I processed a Longitudinal Stream between two MRIs of same patient taken in
different dates... I used the following commands:
i) recon-all -all -s tp1id, recon-all -all -s tp2id
ii) recon-all -base templateid
Hi Guang,
has anyone ever answered to your question? Probably it was missed.
It is very strange that the longitudinals fail when the base and the
cross sectionals worked!
Also the brainmask step in the -long run simply maps the brainmask from
the base to the current time point. It cannot fail.
Martin,
Not to add more to the confusion, but what if the final longitudinal scans are
not fine and need some editing. Can they be rerun in the standard way to
incorporate edits (e.g., -autorecon2-cp -autorecon3 ... ), or should something
different be done? Will rerunning these edited long
Derin,
You probably mean the final longitudinal runs (not 'scans').
The longitudinal (-long) runs really should be fine without extra
editing. We have never tried editing them as it was never necessary.
They should be OK, if not there is likely a problem before that needs to
be fixed (e.g.
Hi FS experts,
Does anyone know how to extract these ROIs (including all gyral and sulci)
from the image aparc.a2009s+aseg.mgz. I just want to create a mask image
based on this image by using 1, 2, .. to code different brain areas. Thanks
for your solutions.
Also, I can not display the image
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