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Proceedings Paper

The effect of edge-preserving image smoothing on automatic colonic polyp detection for CT colonography
Author(s): David Pilkinton; Ingmar Bitter; Ronald M. Summers; Shannon Campbell; J. Richard Choi; Perry J. Pickhardt
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Paper Abstract

Low radiation dose requirements create relatively noisy images that contribute to high numbers of false positive detections in CAD for CT colonography. Presumably image denoising techniques such as non-linear, edge-preserving smoothing filters can improve automatic colonic polyp detection in CT colonography by reducing overall per patient false positive rates. Here, we have evaluated multiple edge-preserving smoothing filters to determine whether this is so. Prone and supine scans from 81 asymptomatic, average-risk adults with adenomatous polyps were studied with and without smoothing. FROC curves were generated to analyze CAD results. A single, clinically relevant operating point was compared between the best smoothing filter results and the unsmoothed data. Improvement in performance was observed, but the differences were not found to be statistically significant for average dose CT colonography.

Paper Details

Date Published: 13 March 2006
PDF: 8 pages
Proc. SPIE 6143, Medical Imaging 2006: Physiology, Function, and Structure from Medical Images, 614335 (13 March 2006); doi: 10.1117/12.653985
Show Author Affiliations
David Pilkinton, National Institutes of Health (United States)
Ingmar Bitter, National Institutes of Health (United States)
Ronald M. Summers, National Institutes of Health (United States)
Shannon Campbell, National Institutes of Health (United States)
J. Richard Choi, Uniformed Services Univ. of the Health Sciences (United States)
Walter Reed Army Medical Ctr. (United States)
Perry J. Pickhardt, Uniformed Services Univ. of the Health Sciences (United States)
National Naval Medical Ctr. (United States)


Published in SPIE Proceedings Vol. 6143:
Medical Imaging 2006: Physiology, Function, and Structure from Medical Images
Armando Manduca; Amir A. Amini, Editor(s)

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