The effect of edge-preserving image smoothing on automatic colonic polyp detection for CT colonography

David Pilkinton; Ingmar Bitter; Ronald M. Summers; Shannon Campbell; J. Richard Choi M.D.; Perry J. Pickhardt

doi:10.1117/12.653985

13 March 2006 The effect of edge-preserving image smoothing on automatic colonic polyp detection for CT colonography

David Pilkinton, Ingmar Bitter, Ronald M. Summers, Shannon Campbell, J. Richard Choi M.D., Perry J. Pickhardt

Proceedings Volume 6143, Medical Imaging 2006: Physiology, Function, and Structure from Medical Images; 614335 (2006) https://doi.org/10.1117/12.653985
Event: Medical Imaging, 2006, San Diego, California, United States

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.

Citation Download Citation

David Pilkinton, Ingmar Bitter, Ronald M. Summers, Shannon Campbell, J. Richard Choi M.D., and Perry J. Pickhardt "The effect of edge-preserving image smoothing on automatic colonic polyp detection for CT colonography", Proc. SPIE 6143, Medical Imaging 2006: Physiology, Function, and Structure from Medical Images, 614335 (13 March 2006); https://doi.org/10.1117/12.653985

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