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Fig. 1A —Screening CT colonography (CTC) in asymptomatic average-risk
54-year-old man. Oblique orientation of 3D map shows location of 10-mm
rectosigmoid polyp (red dot) that was identified at prospective
primary 3D evaluation but was missed at retrospective primary 2D evaluation.
Blue arrow indicates 3D endoluminal vantage point shown in B. Green
line indicates automated centerline for endoluminal navigation. This large
polyp was confirmed at same-day optical colonoscopy.
