[Freesurfer] gca atlas creation

2013-01-02 Thread Gabriel Gonzalez Escamilla
Dear FreeSurfer expertsHapp new year to all of you, and thanx for all your help along the past 2012.I would like to make some questions regardins a new atlas creation1) In a first step before mri_ca_train I did use mri_ca_normalize to normalize my FS_MNI152average subject to the

[Freesurfer] about ROI

2013-01-02 Thread xiangbo_2010
Dear experts I has obtained the ROI by analysis, I want to obtain the label of this ROI, whether has the command to direct keep label, not drawing this ROI? thanks! Bo Xiang___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu

Re: [Freesurfer] gca atlas creation

2013-01-02 Thread Bruce Fischl
Hi Gabriel what are you trying to achieve? There's no point in building a gca from a single average subject. The gca is typically built be compiling statistics across many subjects. Not sure if you need the answers any longers but (1) you can view the gca with freeview as it if were an image

Re: [Freesurfer] fscalc / mris_calc problem

2013-01-02 Thread Nick Schmansky
Fred, You can try an updated mris_calc for the mac found here: ftp://surfer.nmr.mgh.harvard.edu/pub/dist/freesurfer/misc/macos-leopard-intel/ Nick On Mon, 2012-12-31 at 13:21 +0200, Rudolph Pienaar wrote: Hi Fred -- I'm currently traveling and have limited internet connectivity. I'll be

[Freesurfer] FW: how to obtain MRI coordinates of scalp surface points marked in tksurfer

2013-01-02 Thread Jeff Eriksen
HI, I created a scalp surface mesh with mkheadsurf. I need to mark or select some scalp surface points and obtain their MRI coordinates. That is, if my MRI is 256-cubed I need the (ix,iy,iz) MRI voxel coordinates closest to the scalp mesh point I mark, where these run from 1 to 256 (or 0-255

Re: [Freesurfer] FW: how to obtain MRI coordinates of scalp surface points marked in tksurfer

2013-01-02 Thread Bruce Fischl
Hi Jeff The coordinate conversions are documented on our wiki. Or you could do the marking in tkmedit or freeview which will show you voxel and surface RAS coords. There might also be an option to view them in tksurfer too, I can't remember (view-information or something like that) Cheers