average cortical thickness measure? - Freesurfer

17 Dec 2015


      Hi, in response to the average thickness measure (see below). In
?h.aparc.stats, I see a variable ThickAvg, is that it? And then to get the
average thickness across the *entire* cortex, I average across the couple
of dozen regions that it provides?
Thanks!
Maria
...
Message: 7
Date: Fri, 11 Dec 2015 13:49:23 -0500
From: Douglas N Greve greve@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] average cortical thickness measure?
To: freesurfer@nmr.mgh.harvard.edu
Message-ID: 566B1AB3.9090309@nmr.mgh.harvard.edu
Content-Type: text/plain; charset=windows-1252; format=flowed
In ?h.aparc.stats, you'll find a line like
# Measure Cortex, MeanThickness, Mean Thickness, 2.40617, mm
You'll have to get the value for each hemi and compute the mean
On 12/11/2015 01:38 PM, Maria Kharitonova wrote:
...
I know that the aseg atlas provides a number of voume measures
(e.g. EstimatedTotalIntraCranialVol, TotalGrayVol), but is there a
variable for an average cortical thickness? I?d like to see if
thickness in some of the regions is associated with a variable of
interest over and above an overall main effect, so would like to
control for the average thickness, but can?t figure out a good way to
do that.
Thanks!
Maria
?
Maria Kharitonova, PhD
Research Assistant Professor
Department of Medical Social Sciences
Northwestern University Feinberg School of Medicine
625 N. Michigan Ave, Suite 2700
Chicago, IL 60611
Phone: (312) 503-6503
Email: maria.kharitonova@northwestern.edu
mailto:maria.kharitonova@northwestern.edu

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