Hi Zhuangming
by default we use the interior ("?h.white") surface for computing area,
but you can specify the pial to mris_anatomical_stats if you want instead.
cheers
Bruce
On Fri, 7 Mar 2014, 沈庄明 wrote:
Hi Doug, Sorry for forgetting to post to the list. The figure attached to
this email could illustrate my questions. The blue region in the figure is a
cortical parcellation (i.e. precentral) obtained by FreeSurfer. As I
understand, the cortical parcellation has its own thickness (maybe 2~3mm) in
actually, therefore, this cortical parcellation has interior surface (red
line in the figure) and exterior surface (green line in the figure). The
interior surface separates the white matter and the cortical parcellation,
while the exterior surface separates the cortical parcellation and the
skull. What I want to know is whether both the exterior surface and the
interior surface are computed when FreeSurfer calculates the surface area.
Thanks!
Zhuangming Shen
[IMAGE]
-----原始邮件-----
发件人: "Douglas Greve" <gr...@nmr.mgh.harvard.edu>
发送时间: 2014年3月6日 星期四
收件人: "沈庄明" <zhms...@ion.ac.cn>, "free surfer"
<freesurfer@nmr.mgh.harvard.edu>
抄送:
主题: Re: [Freesurfer] Surface area in aparc stats
Hi Zhuangming, please remember to post to the list. Thanks! I
don't understand your question. What do you mean by the
exterior, anterior, posterior, etc, surfaces?
On 3/5/14 11:56 PM, 沈庄明 wrote:
Hi Doug, Thank you for your prompting response. Do you
mean the computation only calculate exterior surface of
the cortical region ? The other five surface (i.e.
anterior, posterior, left, right, interior) are excluded ?
Thanks!
Zhuangming
-----原始邮件-----
发件人: "Douglas Greve" <gr...@nmr.mgh.harvard.edu>
发送时间: 2014年3月6日 星期四
收件人: freesurfer@nmr.mgh.harvard.edu
抄送:
主题: Re: [Freesurfer] Surface area in aparc stats
By default, the surface area is computed from the
white surface (ie, boundary between WM and GM). It
is possible to compute it from the pial surface (ie,
boundary between GM and background)
doug
On 3/5/14 9:14 PM, 沈庄明 wrote:
Hi all, I need to know how is the SurfArea
in ?h.aparc.stats calculated by FreeSurfer?
Since each cortical parcellation has its own
thickness in 3D space, does the surface area
computation consider both the exterior surface
(i.e. the surface separating the gray matter
and the background) and the interior surface
(i.e. the surface separating the gray matter
and the white matter)?
Thanks!
Zhuangming Shen
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