How to code a fixed region of interest?

How can i hardcode ROI (specific area)? The code below allows me to select ROI with mouse:

rect = getrect(f); % Select ROI with mouse
ori_roi{i} = originalImage( rect(2) : (rect(2)+rect(4)) , rect(1) : (rect(1)+rect(3)) , : ); % store roi in matrix

Solved:

rect = [375.5 581.5 795 363]; % fixed ROI
ori_roi{i} = originalImage( rect(2) : (rect(2)+rect(4)) , rect(1) : (rect(1)+rect(3)) , : ); % store roi in matrix

[Adam]

doc rectangle

should work fine for a rectangular ROI