[Freesurfer] Hc segmentation: crosssectional stream with v4.5, longitudinal with v5.1

2012-07-04 Thread Wenger, Elisabeth
Dear FreeSurfer experts, we have processed a dataset crossectionally within version 4.5, and then ran the longitudinal stream with v5.1. we are interested in the hippocampus segmentations and now i'm wondering whether i should go back and run the whole analysis from scratch with the newest vers

[Freesurfer] manually labeled brains for segmentation atlas

2012-01-13 Thread Wenger, Elisabeth
Dear Freesurfer specialists, I'm currently working on a comparison between manual segmentations and freesurfer segmentations of the hippocampus. Therefore i would be very interested in the atlas used for subcortical segmentation. On the wiki i read that the manually labeled brains used to build

[Freesurfer] atlas used for subcortical segmentation

2011-12-07 Thread Wenger, Elisabeth
Dear Freesurfer specialists, we are currently working on a comparison paper between manual segmentations and freesurfer segmentations of the hippocampus. In the paper by Jovicich and colleagues (2009) they mention that they generated their own segmentation atlas for the full brain freesurfer s

Re: [Freesurfer] hippo-subfield on longitudinally processed brains

2011-09-01 Thread Wenger, Elisabeth
> >(so run the hippo subfield segementation on the improved longitudinal >results instead of the cross sectionals). >Let me know how it goes. > >Best, Martin > >On Tue, 2011-08-30 at 10:44 +, Wenger, Elisabeth wrote: >> Dear freesurfer specialists, >> >

[Freesurfer] hippo-subfield on longitudinally processed brains

2011-08-30 Thread Wenger, Elisabeth
Dear freesurfer specialists, I am trying to run the very interesting hippocampus subfield segmentation on subjects that have already undergone the standard volumetric pipeline AND the longitudinal pipeline. I tried the command "recon-all –subjid -hippo-subfields". Unfortunately, i'm getting th

[Freesurfer] optimal voxel size

2011-05-09 Thread Wenger, Elisabeth
Dear Freesurfer experts, I am currently planning a study in which I want to investigate changes in gray matter due to training on structural MR images. I heard some rumors that although FreeSurfer can of course process images with different voxel sizes, it always somehow "transforms" the voxel