[Freesurfer] Problems with hippocampal subfield segmentation

2011-06-24 Thread Jürgen Hänggi
Dear FS experts We have some problems with the segmentation of hippocampal subfields. The recon-all finished without problems, but when using GEMS the following error occured: nan nan nan nan nan nan nan nan nan Singular: 0 m_BoundingBoxSize: [94, 66,144] minimalMappedCoordinate: [

[Freesurfer] PhD position in structural imaging of the vulnerability to develop schizophrenia

2011-06-24 Thread Marie Schaer
PhD position in structural imaging of the vulnerability to develop schizophrenia We are seeking a highly motivated student for a doctoral position in the Behavioral Psychiatry and Neuroimaging laboratory in Geneva. This group, headed by Prof. Stephan Eliez, provides a multidisciplinary approach

Re: [Freesurfer] Difference in hippocampal volume between scanners

2011-06-24 Thread Jessica Liu
Hi Dr. Fischl, Thanks for your comments. The aim of my study is to analyze the brain volume in AD subjects. Most of the study was scanned on the 1.5T (single-channel head coil) with a few subjects rescanned on the 3T (12-channel head coil), so we would like to compare the brain volume of the sam

Re: [Freesurfer] Not label correctly on Longitudinal Procees on FS5.1

2011-06-24 Thread Martin Reuter
Yi-Yu, yes, that should not happen. Can you check the base and all other time points? Because if something is wrong there, it might influence the long runs. It could be that one of the time points has problems, therefore affecting the base? Best, Martin On Fri, 2011-06-24 at 10:43 -0700, Yiyu C

Re: [Freesurfer] Not label correctly on Longitudinal Procees on FS5.1

2011-06-24 Thread Martin Reuter
something is weird (there is a label outside the brain in the brain stem in the base?) I'd like to take a closer look. Can you send us the data? You can also send only the input(s) of the cross sectionals (the 001, 002..? in each time point) and we can rerun here to see if the same happens. Than

[Freesurfer] Error with tkmedit

2011-06-24 Thread Antonella Kis
Dear Freesurfer experts, I am still a beginer in using Freesurfer v.5.1.0 I finished running the recon-all and I am trying to visualize the volumes and surfaces but I got an error wile using tkmedit. I will appreciate any help, suggestions. This is from bugr: FREESURFER_HOME: /usr/local/freesurf

Re: [Freesurfer] Difference in hippocampal volume between scanners

2011-06-24 Thread Bruce Fischl
Hi Jessica yes, probably. With so many differences (sequence, field strength, coil) it will be really hard to get anything out of a combined dataset. sorry Bruce On Fri, 24 Jun 2011, Jessica Liu wrote: Hi Dr. Fischl, Thanks for your comments.  The aim of my study is to analyze the brain v

Re: [Freesurfer] Difference in hippocampal volume between scanners

2011-06-24 Thread Jessica Liu
Alright, thanks for all of your input! Jessica 2011/6/24 Bruce Fischl > Hi Jessica > > yes, probably. With so many differences (sequence, field strength, coil) it > will be really hard to get anything out of a combined dataset. > > sorry > Bruce > > On Fri, 24 Jun 2011, Jessica Liu wrote: > >

[Freesurfer] stats on masked functional data

2011-06-24 Thread Ritobrato Datta
Hello All, I have a functional beta value overlay as a .mgh file and a label file and I want to compute the average value within that mask for each subject. Is there a program to do that ? Thanks Ri ___ Freesurfer mailing list Freesurfer@nmr.mgh.har