CAT12 Homogeneity report

Hello everyone!

Firstly, I apologise if this is not the right forum to place such questions! (Wasn't sure if CAT12 had a forum)

Secondly, I was attempting to use the 'segment' pipeline on cat12 and was wondering if anyone could kindly explain to me how to address the below 2 warnings/problems:

1. WARNING 01: cat_run_job:failedBGD

cat_run_job1639: Detection of background failed.

2. WARNING 02: cat_run_job1639:nonT1contrast

A non-T1 contrast was detected and the NEW EXPERIMENTAL

PIPELINE is used! If it is was a high-resolution T1 image,

the initial segmentation might have failed, probably due

to alignment problems (please check the image orientation).

Regarding problem #2, I have checked the image thoroughly, the orientation seems fine (have aligned to ACPC) and it wasn't a non-contrasted T1 scan.

Thirdly, regarding the homogeneity report, could anyone explain what the blue overlays refer to and what do "HD" and "BG" refer to? (see attached pdf)

Thank you and have a good week ahead :)

Regards,

Eu Jin

[John D'Errico]

What does this have to do with MATLAB? Is CAT12 a third party toolbox?

[Walter Roberson]

Looks like it is a third party extension to SPM12 which is a third party MATLAB toolbox

https://neuro-jena.github.io/cat/