Re: [Freesurfer] Unknown error when running longitudinal analysis

2025-02-27 Thread Huang, Yujing
I don’t see any errors in the attached log. I noticed that you specified ‘-parallel’ in your recon-all. It is the parallelism done at recon-all level. There is no synchronization mechanism to guard shared sources accessing. There have been reports of ‘ln -s’ errors due to that. I’m wondering if

Re: [Freesurfer] unknown error

2010-01-13 Thread Bruce Fischl
check the talairach.xfm transform and see if it is accurate. cheers Bruce On Tue, 12 Jan 2010, Xiantong Zhen wrote: Hi experts, I run freesurfer to compute the thickness, but I find some subjects failed with error. Would you please tell me how to handle this error. Thank you very much! And

Re: [Freesurfer] Unknown error

2008-04-29 Thread Jerry Yeou-Wei Chen
Thanks again! I'm working on some other analyses right now, but I will report back once i get a chance to run this again...! - Jerry On Tue, Apr 29, 2008 at 11:52 AM, Bruce Fischl <[EMAIL PROTECTED]> wrote: > 1. It should be very sensitive to this - just make sure the white matter > is at least 1

Re: [Freesurfer] Unknown error

2008-04-29 Thread Bruce Fischl
1. It should be very sensitive to this - just make sure the white matter is at least 100 or so in the image (it can be more). 2. You shouldn't need to erase anything - just rerun recon-all cheers, Bruce On Tue, 29 Apr 2008, Jerry Yeou-Wei Chen wrote: Okay, thanks! I'll give that a shot...

Re: [Freesurfer] Unknown error

2008-04-29 Thread Jerry Yeou-Wei Chen
Okay, thanks! I'll give that a shot... but I have a couple of questions beforehand: 1) How would you recommend that I decide what scale factor to use? Trial and error to get a peak of ~116? 2) Should I run cp and mri_convert, then erase all other existing files and folders, and rerun recon-all from

Re: [Freesurfer] Unknown error

2008-04-28 Thread Bruce Fischl
Hi Jerry, I think you can do something like: cp 001.mgz 001_orig.mgz mri_convert --scale 3 001_orig.mgz 001.mgz then the same for the other runs and see how that works in recon-all. Usually we detect and account for this, but I guess something is failing in your case. cheers, Bruce On Mo

Re: [Freesurfer] Unknown error

2008-04-28 Thread Jerry Yeou-Wei Chen
Hi Bruce, Looking at one of the successfully processed subjects in tkmedit, I would guesstimate the range in the brain to be ~20-65. The corresponding 001.mgz is equally dark. Regarding the scale option, would I run that initially ( with --scale ), and then run autorecon as normal? Do I find the

Re: [Freesurfer] Unknown error

2008-04-27 Thread Bruce Fischl
p.s. are the 001.mgz and 002.mgz dark? The orig.mgz? Sometimes nu_correct can create very dark images, and there are some switches you can loo through to correct them. Alternatively if it is the 001.mgz, mri_convert has a scale option you can use. cheers, Bruce On Fri, 25 Apr 2008, Jerry Yeo

Re: [Freesurfer] Unknown error

2008-04-26 Thread Bruce Fischl
it can be trouble if they are that low, as you lose dynamic range in the 8-bit representation. What are the ranges in orig.mgz? On Tue, 22 Apr 2008, Nick Schmansky wrote: Jerry, At this point, I think Bruce will need to jump-in to answer (he is out- of-town today). I think he will ask about

Re: [Freesurfer] Unknown error

2008-04-25 Thread Jerry Yeou-Wei Chen
Okay, thanks for your help again Nick! Regarding the scan data: I am actually working with data collected by a previous member of our lab, and there were indeed some problems... (related to the SCIC algorithm on our GE scanner). So, our technician created a program to "uncorrect" the intensity scal

Re: [Freesurfer] Unknown error

2008-04-22 Thread Nick Schmansky
Jerry, At this point, I think Bruce will need to jump-in to answer (he is out- of-town today). I think he will ask about your scan parameters, ie, how is your scanner setup? It sounds as if something is not quite right in the data coming-off the scanner. Nick On Tue, 2008-04-22 at 14:26 -0400

Re: [Freesurfer] Unknown error

2008-04-22 Thread Jerry Yeou-Wei Chen
Thanks for the reply, Nick. I think you correctly identified the problem. nu.mgz is oriented correctly, but looks very dark... However, it looks decent if I adjust the brightness/contrast I have other scans that were processed without error, and the orig.mgz, and nu.mgz also appear quite dark (

Re: [Freesurfer] Unknown error

2008-04-22 Thread Nick Schmansky
Jerry, I'm not sure why it exited without giving a better message, but this is a clue why it exited: before smoothing, mri peak at 0 after smoothing, mri peak at 0, scaling input intensities by inf the mri peak is at zero, which is wrong (it should be around 116/117 or so). if you view nu.m