Automated polyp detector for CT colonography: Feasibility study

An abdominal computed tomographic scan was modified by inserting 10 simulat ed colonic polyps with use of methods that closely mimic the attenuation, n oise, and polyp-colon wall interface of naturally occurring polyps. A shape -based polyp detector successfully located six of the 10 polyps. When setti ngs that enhanced the edge profile of polyps were chosen, eight of 10 polyp s were detected. There were no false-positive detections. Shape analysis is technically feasible and is a promising approach to automated polyp detect ion.