Figure 5: Scans of an aluminium tube placed off-center in a water-filled plastic tube, with scans centered on the aluminium tube, with various degrees of truncation: no truncation (a), and truncated with (b) FOV at 50% width, (c) FOV at 25% width and (d) FOV at 12.5% FOV width. Other intermediate degrees of truncation were also included (not shown).