RE: [Freesurfer] Manual editing tips?

2005-05-08 Thread Fornito, Alexander
Hi Evelina, Let's see if I understand you... The pial and white boundaries are calculated on the intensity normalized/motion/corrected/averaged image, irrespective of manual editing. Then the manual editing is only done to obtain a surface representation that is visually accurate for display of i

RE: [Freesurfer] Manual editing tips?

2005-05-08 Thread Bruce Fischl
Hi Alex, the manual editing can certainly effect the final surface placement. Mostly if a large piece of wm is missed, or sometimes we edit the brain volume directly to remove some dura that gets kept within the pial surface. The qsphere is used to guide the topology correction, but itself is no

RE: [Freesurfer] Manual editing tips?

2005-05-08 Thread Fornito, Alexander
Hi Bruce, So then if my euler numbers for the white and pial surfaces are okay, any tips as to why I get the "Segmentation Fault" message when I run mris_anatomical_stats rh thickness? Is this a problem with the initial wm segmentation? Thanks, Alex -Original Message- F

RE: [Freesurfer] Manual editing tips?

2005-05-08 Thread Bruce Fischl
because thickness isn't a surface - it's a scalar field (it has no geometry information, just a list of vertex indices and thickness values). You can only run mris_euler_number on a surface On Mon, 9 May 2005, Fornito, Alexander wrote: Hi Bruce, So then if my euler numbers for the white and pi

FW: [Freesurfer] Manual editing tips?

2005-05-08 Thread Fornito, Alexander
-Original Message- From: Fornito, Alexander Sent: Mon 5/9/2005 1:14 PM To: Bruce Fischl Cc: Subject: RE: [Freesurfer] Manual editing tips? That did the trick. So then the ?.thickness file contains data neede