Hi Bruce,
I'll see if I can phrase this right
In aseg.mgz each region has essentially been given a unique number (e.g. 17
for left hippocampus, for example). ROI taken from aseg.mgz volumes are
non-probabilistic, yes-no affairs already. MRI_binarize just pulls this
out when we want to look at particular regions, say left hipp???
Josh
On Wed, Nov 30, 2011 at 1:39 PM, Bruce Fischl <fis...@nmr.mgh.harvard.edu>wrote:
> probably not, as the aseg.stats calculation uses partial volume estimates.
>
> cheers
> Bruce
>
> On Wed, 30 Nov 2011, Joshua Lee wrote:
>
> Hey Doug, THanks. That looks simpler. I'll probably use that.
>>
>> Question: Will the total volume of a ROI taken from aseg.mgz correspond to
>> the volume given in aseg.stats?
>>
>> Josh
>>
>>
>>
>> On Wed, Nov 30, 2011 at 9:55 AM, Douglas N Greve <
>> gr...@nmr.mgh.harvard.edu>
>> wrote:
>> If you have matlab, you can load the aseg into matlab, like
>> aseg = MRIread('aseg.mgz');
>> vol = length(aseg.vol(:,:,n:256) == ID);
>> where ID is the code number for the ROI you want as found in
>> $FREESURFER_HOME/**FreeSurferColorLUT.txt
>> doug
>>
>> Joshua Lee wrote:
>> Hi All,
>>
>> I would like to determine the volumes of a segmented region
>> below or above an arbitrary line in one of the planes. For
>> example, what would be the remaining volume of a label when z >=
>> nth slice, where I would have previously determined the
>> appropriate value of n.
>>
>>
>>
>> Thanks,
>> Josh
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