Using previous versions of FreeSurfer, we have used the eTIV as a covariate for our volumetric analyses. We have been using the eTIV numbers from 5.1.0 for new studies. What would you recommend using for subjects who have been run with 5.1.0? Can you make the template available publicly, or would it be legitimate to take the eTIV from 5.0 and the aparc stats from 5.1.0?

Thanks,

~Sue

* * ** *** ***** ******** *************
Susan M. M. Ruiz, Ph.D.
Boston University School of Medicine
Laboratory for Neuropsychology
VA Boston Healthcare System
smosher@bu.edu
* * ** *** ***** ******** *************

On Jul 16, 2012, at 4:17 PM, Bruce Fischl wrote:

can you send us an example? In the ones we've looked at the older versions were more stable. Alternatively, we can send you a new template that Avi Snyder generated that you could try out

cheers
Bruce

On Mon, 16 Jul 2012, Ayaz, Muhammad wrote:

Well, I am using version 5.1.0. I have had same issue in fewer subjects when I used the older version as well. Any comments about that?

-----Original Message-----
From: Bruce Fischl [mailto:fischl@nmr.mgh.harvard.edu]
Sent: Monday, July 16, 2012 3:04 PM
To: Ayaz, Muhammad
Cc: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] sum of WM and GM coming out to be bigger than ICV after recon-all

Hi Ayaz

what version are you running? There appears to be an instability in the
eTIV calculation in just version 5.1 (not before or in the upcoming 5.2)

cheers
Bruce
On
Mon, 16 Jul 2012, Ayaz, Muhammad wrote:

Dear All,

After running recon-all, I noticed several subjects that sum of WM and GM is
bigger than ICV. I have re-run these subjects and the results is the same
sum of GM and WM is coming out to be bigger than ICV.

Any suggestions? I need to calculate normalized volumes.

Regards

Ayaz

The information contained in this message and any attachments is intended
only for the use of the individual or entity to which it is addressed, and
may contain information that is PRIVILEGED, CONFIDENTIAL, and exempt from
disclosure under applicable law. If you are not the intended recipient, you
are prohibited from copying, distributing, or using the information. Please
contact the sender immediately by return e-mail and delete the original
message from your system.

The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
contains patient information, please contact the Partners Compliance HelpLine at
http://www.partners.org/complianceline . If the e-mail was sent to you in error
but does not contain patient information, please contact the sender and properly
dispose of the e-mail.

The information contained in this message and any attachments is intended only for the use of the individual or entity to which it is addressed, and may contain information that is PRIVILEGED, CONFIDENTIAL, and exempt from disclosure under applicable law. If you are not the intended recipient, you are prohibited from copying, distributing, or using the information. Please contact the sender immediately by return e-mail and delete the original message from your system.

_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer

The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
contains patient information, please contact the Partners Compliance HelpLine at
http://www.partners.org/complianceline . If the e-mail was sent to you in error
but does not contain patient information, please contact the sender and properly
dispose of the e-mail.