Hello, You can extract ROIs from an atlas in a number of ways: https://fsl.fmrib.ox.ac.uk/fslcourse/lectures/practicals/registration/index.html#applying covers this using FSLeyes. You can then use fslstats with the -k option and -M options to extract values from your data. Kind Regards Matthew -------------------------------- Dr Matthew Webster FMRIB Centre John Radcliffe Hospital University of Oxford On 3 Jul 2018, at 08:50, Shane Schofield <[log in to unmask]<mailto:[log in to unmask]>> wrote: Hi, Sorry for reposting this again. How can I extract averaged DTI parameters like FA from the WM atlas? The images have been processed using the TBSS pipeline. Thanks very much! Shane. ________________________________ To unsubscribe from the FSL list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=FSL&A=1 ######################################################################## To unsubscribe from the FSL list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=FSL&A=1