afni.nimh.nih.gov

Hello, I am trying to reface FLAIR scans using @afni_refacer_run. The script worked perfectly fine for T1 images, but when I chose FLAIR images as input I only get the error

Need to have an input anatomical, at least

Is it possible to use @afni_refacer_run on FLAIR images?

Thank you very much for your help!

Johannes