Example - CT low-contrast

ROI centred on 0.3% contrast. (mA = 300, kVp = 120, Time = 4 secs, Slice = 10 mm)

Original CT image
+ Region Of Interest (ROI)

5x ROI
before enhancement

5x ROI
before enhancement
with edges marked

5x ROI
after enhancement
with edges marked

5x ROI
after enhancement
with edge-dots removed


Before and after enhancement, side-by-side:

'before' 'after'