[Freesurfer] parameter settings

2007-05-08 Thread Frederick Klauschen
Hi, I would like to ask if the following procedure is recommended when using FreeSurfer for (total) gray and white matter volumetry, or if specific parameter settings are known to optimize this task. Default processing stream (recon-all -all) is used. Data are visually inspected, and manual

[Freesurfer] strange segmented image data

2006-09-20 Thread Frederick Klauschen
Hi, when loading the segmentated data into Matlab I get an image containing four smaller subimages (see attachment) instead of one (fullsize) that corresponds to the original input dataset. Does anybody know what went wrong? Frederick __ Do You

Re: [Freesurfer] coordinates

2006-09-13 Thread Frederick Klauschen
--noedit mri_vol2vol --targ rawavg.mgz --mov orig.mgz --reg reg.dat --o orig-in-rawavg.mgz If this does not work with your version of vol2vol, then use the one here: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/mri_vol2vol Frederick Klauschen wrote: Hi, I have

[Freesurfer] coordinates

2006-09-12 Thread Frederick Klauschen
Hi, I have to bring up an issue again which we had some discussion about before, but which we haven't yet found a satisfying solution. I would like pose my question a little more precisely again: 1) I have a dataset that is in 181x217x181 coordinates. 2) I am processing it as follows:

Re: [Freesurfer] transform back to original coordinates ?

2006-09-02 Thread Frederick Klauschen
, Frederick Klauschen wrote: Hi Bruce, (aim: transform fs format back to original file format) when I run the commands you suggested: mri_convert -rl orig/001.mgz brainmask.mgz brainmask_transformed.mgz the backtransformed image is in the original coordinate boundaries

Re: [Freesurfer] transform back to original coordinates ?

2006-09-01 Thread Frederick Klauschen
Hi Bruce, (aim: transform fs format back to original file format) when I run the commands you suggested: mri_convert -rl orig/001.mgz brainmask.mgz brainmask_transformed.mgz the backtransformed image is in the original coordinate boundaries, but it is not a the same position as the original data

Re: [Freesurfer] preprocessing question

2006-08-29 Thread Frederick Klauschen
Could you tell me the transformation vector that is used to convert a e.g.(181x217x181) array to a FS (256^3) array. I would like to backtransform from FS to native space. Thanks, Fred --- Doug Greve [EMAIL PROTECTED] wrote: Which way do you want to go? Convert FS volumes back into the