Fmriprep SDC distort the image and there is error for some subjects

[jsein]

You are not the first one to mention this issue with SDC correction. The FMRIPREP team is working on it and the next release of FMRIPREP will hopefully do a better job at tackling this issue.

Here is a related post about this:

Failing preprocessing 22.0.2

We’re hoping to have some fixes in for SDC that broke after 20.2.x in 22.1.x, due out in a few weeks. I suspect there will still be some cases that will not be fully resolved by then, and hope to move on to a 23.0.x in early 2023.

In the meantime, you may want to try an earlier version of FMRIPREP, that could give you different (and hopefully better) result on your dataset. For instance you can try FMRIPREP 20.2.7, the latest release of the LTS (long term support) branch.