Hello, I am trying to reconstruct brains of patients who had one
structural scan during each of 2 visits, a month apart. I averaged the
two images together, but since they are from different visits, they look
very badly lined up. It looks like there is one image and another image
overlaid and sh
Hi Margaret,
How does the talairach transform look?
On Wed, 2 Feb 2005, Margaret Duff wrote:
> Hello, I am trying to reconstruct brains of patients who had one
> structural scan during each of 2 visits, a month apart. I averaged the
> two images together, but since they are from different vis
The one using the orig is really horrible looking, very distorted and
rotated. I tried using the brain volume, and it looks better, but also
has a rimming/shadowing effect.
On Wed, 2 Feb 2005, Evelina Busa wrote:
>
> Hi Margaret,
>
> How does the talairach transform look?
>
> On Wed, 2 Feb 2005,
Hi again,
If the shadowing/rimming effect appears to be because of an artifact in
one of the scans, then you might be better off to exclude that
acquisition. But if each of the individual scans looks okay, then it does
sound like improving your lousy average is dependent upon getting a better
i would not advise averaging data from two separate visits.
use one or the other.
On Wed, 2 Feb 2005, Evelina Busa wrote:
Hi again,
If the shadowing/rimming effect appears to be because of an artifact in
one of the scans, then you might be better off to exclude that
acquisition. But if each of the
On Wed, 2 Feb 2005, Brian T. Quinn wrote:
> i would not advise averaging data from two separate visits.
> use one or the other.
The auto-align feature aims to offer a fair degree of consistency
between session scans, but if this was not the case (and it often isn't,
because you cannot control f
Before you give up you could try running distortion correction on each of
those volumes before you try averaging/motion correction again...
On Wed, 2 Feb 2005, Margaret Duff wrote:
> The one using the orig is really horrible looking, very distorted and
> rotated. I tried using the brain volume
Hi,
I ran "func2tal" with functional data (*.img) and got
INFO: autodetected functype raw
ERROR: only selxavg, selavg, and sfa functypes are currently supported
How can I change *.img functional data into the above functypes?
Thanks.
Nam.
___
Freesu
Hi Margaret,
what are you using to align them? If they are from different sites, then
they may not be possible to really align, due to differences in shims,
read-out directions and bandwidth. Reconning with a single image is
certainly doable (we've done hundreds), but is more labor intensive.
c
