[Freesurfer] Concerns About Acquisition Parameters Biasing Longitudinal Study Results

2023-04-11 Thread NicolasNorton
External Email - Use Caution Dear Freesurfers, I hope this email finds you well. I am writing to you because I have concerns about how acquisition parameters are biasing the results of a longitudinal study I am running on Niftis that I have processed with Synth_SR.

Re: [Freesurfer] mris_flatten Version 6 vs. 7

2023-04-11 Thread Nasr, Shahin,Ph.D.
External Email - Use Caution Correct Luis. But I am not sure why did verion 7 act like this. Shahin Nasr, Ph. D. Assistant Professor in Radiology Harvard Medical School

Re: [Freesurfer] mris_flatten Version 6 vs. 7

2023-04-11 Thread Fischl, Bruce R.,PHD
External Email - Use Caution Thanks Louis! Bruce From: freesurfer-boun...@nmr.mgh.harvard.edu On Behalf Of Vinke, Louis N.,PHD Sent: Tuesday, April 11, 2023 6:08 PM To: Freesurfer support list ; Nasr, Shahin,Ph.D. Subject: Re: [Freesurfer] mris_flatten Version 6 vs. 7

Re: [Freesurfer] mris_flatten Version 6 vs. 7

2023-04-11 Thread Vinke, Louis N.,PHD
External Email - Use Caution I think it’s just a slight overlap of the flat map. In the FS6 version, using the sulcal pattern as a reference you can see that the calcarine cut does go all the way to that point/vertex. If you were to select two vertices on either side of the

Re: [Freesurfer] Paired analysis contrast with multiple classes

2023-04-11 Thread Douglas N. Greve
External Email - Use Caution I can't see anything wrong with what you have done (just use 1/6 instead of 1.6, but that won't change your sig values). How was the aparc.stats analysis done? Did you use the same FSGD file? On 4/10/2023 10:09 AM, Christoph Aster wrote:

Re: [Freesurfer] T1 with contrast

2023-04-11 Thread Douglas N. Greve
External Email - Use Caution I think it should mostly work. There might be a few places where the pial surface includes a vessel because it is bright. On 4/7/2023 1:49 PM, Carlos Alcocer wrote: External Email - Use Caution Can you use T1 with contrast in freesurfer or

Re: [Freesurfer] Subcallosal cingulate cortex segmentation/parcellation

2023-04-11 Thread Douglas N. Greve
External Email - Use Caution not sure what you mean. It will accurately reflect the volume inside the boundaries, but if the boundaries are off then the volume will be off On 4/6/2023 1:52 PM, Carlos Alcocer wrote: External Email - Use Caution Hi, I am interested in

Re: [Freesurfer] dcmunpack behavior with scouts

2023-04-11 Thread Douglas N. Greve
External Email - Use Caution It only ignores them if you use -auto-runseq Is that what you are doing? On 4/5/2023 11:00 AM, Proulx, Jean Sebastien wrote: Dear Freesurfer Team, The help of dcmunpack says it will ignore scout scans. Is there perhaps a hidden flag to avoid that