Hi Michele - fslstats with the -V option should do it.. Eugene On 5 July 2011 11:50, Michele Placci <[log in to unmask]> wrote: > Dear Experts, > > can you tell me please how to calculate, with FSL, the volume of a > particular cerebral ROI, > for example the volume of the cerebellum from a 3D T1-weighted MRI? > > Thanks in advance. > Michele. >