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Fig. 11 | Insights into Imaging

Fig. 11

From: Electronic cleansing of tagged residue in CT colonography: what radiologists need to know

Fig. 11

Apparent removal of a 9-mm submerged pedunculated polyp, located at the sigmoid colon, due to EC. a A 9-mm pedunculated polyp, submerged under tagged residual fluid, is clearly visible in unsubtracted 2D image data in a wide window (arrow). b Before EC, a horizontal fluid layer (arrowhead) is seen on unsubtracted ebdoluminal 3D views, obscuring parts of the colonic wall. c After EC, the polyp apparently disappears on the 2D images (arrow). d On endoluminal 3D images, the polyp presents as an irregular, distorted filling defect (arrow)

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