Hi Try this: fslmaths standard -roi 0 45 0 109 0 45 0 1 right_inferior fslmaths standard -roi 45 45 0 109 0 45 0 1 left_inferior fslmaths standard -roi 0 45 0 109 45 45 0 1 right_superior fslmaths standard -roi 45 45 0 109 45 45 0 1 left_superior where standard is e.g. $FSLDIR/data/standard/MNI152_T1_1mm Cheers, Saad. On 1 Sep 2009, at 15:32, Moran Artzi wrote: > I want to split NMI template into 4 quarters (First into right & left > hemispheres, and then each hemisphere into Superior-Inferior). Is it > possible > fslmaths or other FSL tool? > > Thanks > Moran > -- Saad Jbabdi University of Oxford, FMRIB Centre JR Hospital, Headington, OX3 9DU, UK +44 (0) 1865 222523 (fax 717) www.fmrib.ox.ac.uk/~saad