Re: [Freesurfer] Newbie question: mean/stddev for volumes and thicknesses in an atlas

2012-01-17 Thread Inati, Souheil (NIH/NIMH) [E]
Hi Bruce, I had a feeling you were going to say that I needed to be careful about scanners and sequence parameters :-) The Oasis dataset looks like just what I would need to get a sense of things, as you said. What should I do to get the segmentations? Cheers, Souheil On Jan 17, 2012, at 8:4

Re: [Freesurfer] Newbie question: mean/stddev for volumes and thicknesses in an atlas

2012-01-17 Thread Bruce Fischl
Hi Souheil, the problem is that you'll really want to match acquisition parameters as well as several demographics (e.g. age, gender, etc, SES, ...). If you just want to get some feeling you could try looking at the Oasis dataset, for which we have segmentations, or you could post your sequence

Re: [Freesurfer] Newbie question: mean/stddev for volumes and thicknesses in an atlas

2012-01-17 Thread Knut J Bjuland
Hi I use this script to extract mean cortical thickness. The script is available under GNU GPL3. Knut J Bjuland > From: souheil.in...@nih.gov > To: freesurfer@nmr.mgh.harvard.edu > Date: Mon, 16 Jan 2012 23:04:09 -0500 > Subject: [Freesurfer] Newbie question: mean/stddev for

[Freesurfer] Newbie question: mean/stddev for volumes and thicknesses in an atlas

2012-01-16 Thread Inati, Souheil (NIH/NIMH) [E]
Hi All, I have a very small set of patients and I would like to compare the volumes of subcortical structures and thickness across the cortex to those of a large normative set. I don't need all the underlying data, just means and standard deviations. Is such a set of measures available? Than