Can use my results from the mri_cvs_register to do a non_FA group analysis, more exactly I am interested on the mean diffusivity (adc.nii from dt_recon).

Since from the significant map I can only find the p values how can I see if there is an increase or decrease of the FA values or how can I do an FA comparison between two groups?

Thank you very much for your time and help.

Antonella