Re: [Freesurfer] Multiple comparison using Monte Carlo

2019-12-03 Thread Ting Li
External Email - Use Caution Dear Dr. Douglas, Thank you so much. I have difficulty to understand z map is essentially an infinite # of subjects. Before smooth, there is no GLM analysis. Does the smooth include in the GLM process? Best regards, Ting On Tue, Dec 3, 2019 at 2:14

Re: [Freesurfer] -qcache and thickness questions

2019-12-03 Thread Joëlle Ismay Rosanne Van Der Molen
External Email - Use Caution Ok thanks a lot, that was helpful! Best, Joëlle De : freesurfer-boun...@nmr.mgh.harvard.edu de la part de Greve, Douglas N.,Ph.D. Envoyé : mardi, 3 décembre 2019 21:09:34 À : freesurfer@nmr.mgh.harvard.edu

Re: [Freesurfer] surfaceholes in aseg.stats

2019-12-03 Thread Greve, Douglas N.,Ph.D.
Those are the number of defects in the ?h.orig.nofix. Not sure why the two people see different numbers. Are you totally sure they are being run in exactly the same way? If they made different edits (control points, brain mask) then it could result in different number of holes On 12/3/2019

Re: [Freesurfer] Multiple comparison using Monte Carlo

2019-12-03 Thread Greve, Douglas N.,Ph.D.
On 12/3/2019 1:36 PM, Ting Li wrote: External Email - Use Caution Dear Dr. Douglas, Thank you so much for all the answers. I have two more questions. 1, When the Monte Carlo simulation is doing, how does one simulation is done? * synthesize z map (synthesize z map for how many

Re: [Freesurfer] -qcache and thickness questions

2019-12-03 Thread Greve, Douglas N.,Ph.D.
Yes, looks like small registration errors. I don't think it is problematic. Any vertex where even a single subject has a 0 should be masked out of the final analysis. On 12/3/2019 1:42 PM, Joëlle Ismay Rosanne Van Der Molen wrote: External Email - Use Caution Hi Douglas, Thank you

[Freesurfer] surfaceholes in aseg.stats

2019-12-03 Thread Laurel Quinlan
External Email - Use Caution Hi Freesurfer Support, I'm wondering how ?h.surfaceholes prior to fixing and "Total number of defect holes in surfaces prior to fixing" are calculated in the aseg.stats file for each brain. I compared aseg.stats files for the same brain edited by

Re: [Freesurfer] Multiple comparison using Monte Carlo

2019-12-03 Thread Ting Li
External Email - Use Caution Dear Dr. Douglas, Thank you so much for all the answers. I have two more questions. 1, When the Monte Carlo simulation is doing, how does one simulation is done? - synthesize z map (synthesize z map for how many subjects?) - smooth z map (You

Re: [Freesurfer] topological defect error

2019-12-03 Thread Bruce Fischl
it might also be the hemispheres not being separated, hard to tell (although that almost never happens). You can look at the filled.mgz to check this (the hemis should have different labels) On Tue, 3 Dec 2019, Greve, Douglas N.,Ph.D. wrote: Look at the lh.orig.nofix and see if you can find

Re: [Freesurfer] topological defect error

2019-12-03 Thread Greve, Douglas N.,Ph.D.
Look at the lh.orig.nofix and see if you can find the defect. Also, look at it in the volume and the surface views. Might be cerebellum On 12/3/2019 11:30 AM, Laurel Quinlan wrote: External Email - Use Caution Hi Freesurfer Support, One of my colleagues receives the following error

Re: [Freesurfer] [External] Freesurfer Digest, Vol 190, Issue 3

2019-12-03 Thread Greve, Douglas N.,Ph.D.
Yes, that is the correct interpretation of the colors On 12/3/2019 9:51 AM, Ferraro, Pilar wrote: > External Email - Use Caution > > Yes, absolutely, this should work! Many Thanks! > I have just one last question concerning the colors in FreeView. > I have a fsgd file with class 1

Re: [Freesurfer] [External] Freesurfer Digest, Vol 190, Issue 3

2019-12-03 Thread Ferraro, Pilar
External Email - Use Caution Yes, absolutely, this should work! Many Thanks! I have just one last question concerning the colors in FreeView. I have a fsgd file with class 1 (patients) coming first and then class 0 (hc) after. The contrast matrix is 1 -1 0. Among the results I

Re: [Freesurfer] negative SUVr using PETsurfer

2019-12-03 Thread miracle ozzoude
External Email - Use Caution Thanks Doug. we double checked the registration with gtm.seg.mgz and it looks good. Also the uptake in Acc is not much smaller than other regions and is pretty similar on both hemispheres so we are not sure what could be causing this. Any suggestions

Re: [Freesurfer] Plotting Longitudinal Data and Calculating Effect Sizes

2019-12-03 Thread Diers, Kersten /DZNE
External Email - Use Caution Hello Jessica, please see my inline reponses below. Best regards, Kersten On Mo, 2019-12-02 at 02:48 +, Hua, Jessica wrote: > External Email - Use Caution > Hi FreeSurfer Experts, > > I used the longitudinal pipeline and

Re: [Freesurfer] Converting labels drew by freeview to volumeError: coordinate mismatch

2019-12-03 Thread ZORO
External Email - Use Caution Hi Douglas, Thanks for your reply! I tried, but the volume and T1 still don't align. my purpose: make a mask of superior colliculus Here is how I did: 1) tkregister2 --mov T1.nii --s sub01 --regheader --noedit --reg register.dat 2) open freeview