The following table or figure may be downloaded to PowerPoint for personal use in teaching and presentations. This feature is available to all subscribers to the journal.

You MUST read and follow the guidelines at Request to Reproduce AJR Content if you are distributing or using AJR content beyond academic use (limited distribution, non-revenue producing, or educational purposes).

(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.

Fig. 5A —71-year-old man with 9-mm sessile polyp in ascending colon. On axial and corresponding 3D endoluminal (right lower corner) CT colonographic images in supine view, polyp (arrow) looks smaller than expected and appears to be flat. On this view, polyp does not contain adequate voxels with high likelihood of being a blob, making it not detectable by computer-aided detection (CAD) algorithm.