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Example of benefit of double-mark CAD presentation for polyp detection. Eight mm adenoma in transverse colon of 69 year-old woman. (A,C) Supine and (B,D) prone three-dimensional endoluminal CTC images. (A,B) Single-mark and (C,D) double-mark CAD presentations. Blue CAD marks shown on supine single-mark and supine and prone double-mark images. In single-mark CAD presentation, three radiologists missed polyp. In double-mark CAD presentation, three of four radiologists detected polyp.
