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Hi - see fslmaths - you can specify any custom kernel you like to be used in the morphological operations. Cheers. On 30 May 2009, at 05:49, Silviu Podariu wrote: > Hello, > > I was wondering if a simple technique exists to build a cubical mask > around > a certain point (or a box-mask of unequal sides, more generally) in > a given > volume. > > I mean, other than slice-by-slice painting/filling, etc... > > Thank you very much, > Silviu Podariu > UNMC > Omaha, NE > --------------------------------------------------------------------------- Stephen M. Smith, Professor of Biomedical Engineering Associate Director, Oxford University FMRIB Centre FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK +44 (0) 1865 222726 (fax 222717) [log in to unmask] http://www.fmrib.ox.ac.uk/~steve ---------------------------------------------------------------------------