You can do it in matlab, something like

a = MRIread('aseg.mgz'); ind = find(a.vol == 17); % left hippo a.vol(ind) = 53; % replace with right hippo MRIwrite(a,'aseg.new.mgz');

Or you can use mri_binarize with the --replace option

doug

On 08/04/2014 10:14 AM, Barnes Anna (UNIVERSITY COLLEGE LONDON HOSPITALS NHS FOUNDATION TRUST - RRV) wrote:

Dear All What is the simplest way to reduce the number of regions that the segmentation code produces.

Very best regards Anna

Anna Barnes, PhD, CSci, MIPEM Clinical Scientist (PETMRI) UCL Institute of Nuclear Medicine UCL Hospitals NHS Foundation Trust 235 Euston Road | London NW1 2BU | UK anna.p.barnes@ucl.ac.uk mailto:anna.p.barnes@ucl.ac.uk or anna.barnes1@nhs.net mailto:anna.barnes1@nhs.net 0203 447 0524

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