Re: [Freesurfer] SAMSEG estimation error

External Email - Use Caution Hi Stefano, I've investigated the use of SAMSEG for AD/MCI patients. I'm using the 7.2 version of Freesurfer and I've realized that I get different results using the same data but when I run the SAMSEG multiple times. Differently from using ASEG, SAMS

Re: [Freesurfer] SAMSEG and statistics

External Email - Use Caution Hi Douglas, I've investigated the use of SAMSEG for AD/MCI patients. I'm using the 7.2 version of Freesurfer and I've realized that I get different results using the same data but when I run the SAMSEG multiple times (on the same patient). Differen

[Freesurfer] Reliability and sensitivity of two whole-brain segmentation approaches − ASEG and SAMSEG

External Email - Use Caution Hi Donatas, I've read your full paper and it is very interesting. During my investigation on the use of SAMSEG and ASEG for AD/MCI patients, I've found some unexpected behaviors. I'm using the 7.2 version of Freesurfer and I've realized that I get d

Re: [Freesurfer] Reliability and sensitivity of two whole-brain segmentation approaches − ASEG and SAMSEG

External Email - Use Caution Hi Donatas, I've read your full paper and it is very interesting. During my investigation on the use of SAMSEG and ASEG for AD/MCI patients, I've found some unexpected behaviors. I'm using the 7.2 version of Freesurfer and I've realized that I get d

Re: [Freesurfer] SAMSEG and statistics

External Email - Use Caution I used freesurfer for ADNI data, specifically MRI for AD/CN. Even I run segmentation many times , I always having the same statistics. Would you share with us the commend line you used ! Le sam. 27 août 2022 à 09:32, Giulio Siracusano a écrit : >

Re: [Freesurfer] SAMSEG and statistics

External Email - Use Caution Hello, this is true (i.e. reproducibility) for ASEG (when running recon-all -all). But, if you use SAMSEG (i.e. running run_samseg instead) you get slightly different results everytime. This is regardless you use -threads flag or not. My command li

Re: [Freesurfer] SAMSEG and statistics

External Email - Use Caution Why you didn't run recon-all directly ? Le sam. 27 août 2022 à 11:32, Giulio Siracusano a écrit : > External Email - Use Caution > > Hello, > > this is true (i.e. reproducibility) for ASEG (when running recon-all -all). > > But, if you use SA

Re: [Freesurfer] SAMSEG and statistics

External Email - Use Caution I've tested reproducibility of the results either using ASEG (therefore via recon-all -all) and also SAMSEG (via run_samseg). The methods are different either in terms of reproducibility of results. Multiple runs of ASEG (recon-all -all) provide the

Re: [Freesurfer] SAMSEG and statistics

External Email - Use Caution Firstly, thanks for your explanation, I didn't know that it would take less than hours since I used recon-all to run 202 samples, I used parallel to run 8 images at once and it took almost 13 hours, but at the end , you can be sure of the results you ha

[Freesurfer] R: SAMSEG estimation error

Hi Giulio, Although SAMSEG is a deterministic algorithm the default version might give you different results when executed with a different number of threads. These are small differences when looking at seg.mgz (a few voxels with swapped labels), but they are more visible when looking at volume