% create VOI object
voi = xff('new:voi');

% coordinates are in a Cx3 table, ctab, and the radius is fixed at 8mm
% alternatively, the radius could be in column 4 in a Cx4 table

% iterate over coordinates in table
for cc = 1:size(ctab, 1)

    % add coordinate
    voi.AddSphericalVOI(ctab(cc, 1:3), 8);
    % or alternatively:
    % voi.AddSphericalVOI(ctab(cc, 1:3), ctab(cc, 4));
    
end