Hi Bruce,
> thanks for your answer. In fact, I wrote:
> -recon-all -i home/pmod/Bureau/freesurfer/subjects/Marie/image(n).nii -subjid image(n) 
> in order to analyse my images. I created folders for each patient, but when I try to open these (tkmedit) I can't recover ... I have new folders (bem, label, mri...), and 001.mgz into mri folder, but I can't open it.
> 
> My goal is to register SPECT with MNI152_T1_2mm_brain, with CT and IRM like intermediate step. Is it possible? I'd like to compare like this my work with FSL (flirt and fnirt) and freesurfer.
> 
> Best regards,
> 
> Marie