input
    group-{group}
        sub-{subject}
            group-{group}_sub-{subject}_T1w.nii.gz (T1w)
output
    group-{group}
        sub-{subject}
            T1w_brain_first_attempt.nii.gz
            T1w_cut.nii.gz
            T1w_brain.nii.gz
            ->fast basename=run_fast (segment)