so there's 10mm or so of gray matter with no underlying wm? I didn't
think that was ever the case. What pathology is this in? And you're sure
it's cortex, not amygdala? Jean: any thoughts?
On Fri, 15 May
2009, Olivier Piguet wrote:
Hi Bruce,
In the coronal plane, slice 152 is the last slice where white matter is
clearly visible. Then, slices 153-158, only grey matter is recognised but not
all of it, and slices 159-164, grey matter is not recognised at all.
I added control points on slice 151-153 in the hope that it would help but
no luck.
Olivier
On 15/05/2009, at 8:39, Bruce Fischl wrote:
Hi Oliver,
how far away is the nearest white matter?
Bruce
On Fri, 15 May 2009, Olivier Piguet wrote:
Hi there,
I haven't received a reply to my question below.
Just to clarify, I ran autorecon1 and autorecon2 on this subject. When
examining the surfaces in tkmedit, the left temporal pole is not included
in the pial surface. Is there a way to force freesurfer to recognise this
as valid brain tissue, bearing in mind that there is no visible white
matter underneath (and therefore the option of adding control points is
not possible).
Thanks for any suggestion to resolve this problem.
Olivier
On 13/05/2009, at 12:57, Olivier Piguet wrote:
Hi there,
I've run autorecon2 on a subject who has significant unilateral atrophy
in the anterior temporal region. In the last few slices anteriorly, the
pial surface does not include what is clearly atrophied cortical tissue
without underlying white matter. What is the method to correct for this?
Looking at previous queries, all of them refer to spots where one can
manipulate the segmentation by adding control points in the neighbouring
white matter, which is not present in this instance.
Any suggestion appreciated.
Olivier
~~~~~~~~~~~~~~~~~~~~~
Olivier Piguet Ph.D.
NHMRC Fellow (Clinical Career Development Award)
Conjoint Senior Lecturer UNSW
Prince of Wales Medical Research Institute
Barker St
Randwick NSW 2031
Australia
Voice: +61 2 9399 1113
Fax: +61 2 9399 1047
E-mail: o.pig...@powmri.edu.au
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http://www.ftdrg.org/
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