Hi Adriana,

Is it possible for you to share the T1 and T2 images so we can debug it?

Best,

Yujing

From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu On Behalf Of adriana.jorge@unibe.ch Sent: Tuesday, January 10, 2023 8:53 AM To: freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] Fw: error: Numerical argument out of domain; error: MRIhistogramLabelRegion: constant image\00

External Email - Use Caution Hi FreeSurfer Developers,

I'm trying to obtain brain parcellations/segmentations of a subject's brain, using T1 and T2 images, but when I execute the recon-all command, I get the following error message:

error: Numerical argument out of domain error: MRIhistogramLabelRegion: constant image error: Numerical argument out of domain error: MRIhistogramLabelRegion: constant image Segmentation fault Linux sharky 5.10.0-20-amd64 #1 SMP Debian 5.10.158-2 (2022-12-13) x86_64 GNU/Linux

recon-all -s Test_withT2 exited with ERRORS at Tue Jan 10 13:17:00 CET 2023

The FreeSurfer version I'm currently using is the freesurfer-linux-ubuntu18_x86_64-7.3.2-20220804-6354275, but I have also tried the exact same process (same command and same data) in the freesurfer-linux-ubuntu18_x86_64-7.3.0-20220718-7725d89 version and got the exact same error message. When I tried running the recon-all again with the freesurfer-linux-ubuntu18_x86_64-7.2.0-20210721-aa8f76b version, no error was reported and the recon-all outputs were correct. Recon-all works for versions reesurfer-linux-ubuntu18_x86_64-7.3.2-20220804-6354275 and freesurfer-linux-ubuntu18_x86_64-7.3.0-20220718-7725d89 if I use only the T1 image. The recon-all logs for the 2 failed and the 1 successful attempts are attached here. Can you help me figure out what the issue is? Why can't I run the recon-all using both T1 and T2 in the latest versions?

Best, Adriana Jorge