Dear All,
Sorry for this email.
I think I made some mistakes. When I redone the analysis, the values were same.
Kindly ignore the email.

From: Anupa AV <av.anupa@yahoo.com>
To: Freesurfer <freesurfer@nmr.mgh.harvard.edu>; Bruce Fischl <fischl@nmr.mgh.harvard.edu>
Sent: Thursday, October 3, 2013 11:06 AM
Subject: Difference in GMV generated from qdec and mris_anatomical_stats

Dear FS experts,

I was trying to find the gray matter volume of superior temporal gyrus (STG) for schizophrenia patients using freesurfer.

I ran recon-all and generated the rh/lh.aparc.volume.stats using qdec.

From that, I got the volume for left hand lh_superiortemporal_volume,=11893.

Out of curiosity, I separately found the STG volume for this patient alone using the follo. steps.

1. Saved the label lh.STG using tksurfer -annot aparc SZ01 lh pial

2. Then generated the volume using mris_anatomical_stats.

3. I found the value to be 16268.

I'm wondering why there is so much changes in the generation of GM volumes.

Can anyone please help me with my query?