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. 2010 Mar 10;37(4):1468–1481. doi: 10.1118/1.3302833

Figure 1.

Figure 1

The histograms (bottom figure (f)) of CT density distribution of five VOIs, which are indicated by the closed curves in the above five pictures. From (a) to (e), the objects are a polyp, two stools (i.e., the stool_1 and stool_2 in (f)), an ileocecal valve, and a rectal tube.