Dear Chris,

We have acquired structural MRIs before and after treatment in 10 large
animals (5/group).

I can't specify the species due to very strong animal activist presence
here; they are close to humans.

As the first step to see any effects of treatment on the brain, I just
want to see if there is any change in the size of brain structures
(specifically, subcortical regions).

After trying out several tools that can draw VOIs on the Nifti files,
MRIcron seems to be the best.

Since I don't have any experience in this kind of study (volume
measurement), I just wonder if MRIcron has been used to determine the
volume of brain structures for publication.

Or, should I use different image analysis program for this purpose?

Thank you,

Buyean

-----Original Message-----
From: MRIcro users support list [mailto:[log in to unmask]] On Behalf
Of Chris Rorden
Sent: Monday, December 17, 2007 3:20 PM
To: [log in to unmask]
Subject: Re: VOI Volum ein MRIcron

Elisabeth-

The Draw/Descriptives command will display a lot of information about
your 
VOI. In the example below, the VOI includes 347 voxels for a volume of 
11.24cc. There are different values for whether you include all voxels
in 
the VOI (VOI), all voxels that are not zero (VOI <>0) and all positive 
voxels (VOI > 0). You also get details of the mean intensity of voxels 
under the VOI, range of voxel intensity and the center of mass... 

VOI notes   
  Center of mass XYZ 44.53x37.44x11.57
VOI      n=min/mean/max=SD: 347[11.24cc]=8704.0000/9858.7780/
11000.0000=549.4175
VOI <>0  n=min/mean/max=SD: 347[11.24cc]=8704.0000/9858.7780/
11000.0000=549.4175
VOI  >0  n=min/mean/max=SD: 347[11.24cc]=8704.0000/9858.7780/
11000.0000=549.4175



On Tue, 20 Nov 2007 15:05:32 +0000, Elisabeth Becker 
<[log in to unmask]> wrote:

>Hi Cris,
>
>I was searching for the VOI Volume display in the new MRIcron. In the 
>MRIcro version it appeared in the bottom left corner when loading a
ROI. 
>Does this tool still exist in the new version and wehre can I find it?
>
>Thanks a lot
>
>Elisabeth Becker
>Section Neuropsychology, Center of Neurology, University of Tuebingen
>=======================================================================
=



----------------------------------------------------------
IMPORTANT WARNING:  This email (and any attachments) is only intended for the use of the person or entity to which it is addressed, and may contain information that is privileged and confidential.  You, the recipient, are obligated to maintain it in a safe, secure and confidential manner.  Unauthorized redisclosure or failure to maintain confidentiality may subject you to federal and state penalties. If you are not the recipient, please immediately notify us by return email, and delete this message from your computer.
----------------------------------------------------------