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1 June 1991Investigation of new filtering schemes for computerized detection of lung nodules
In order to improve the diagnosis of lung cancer from chest radiographs, we are developing a computerized scheme for the detection of pulmonary nodules. The computerized scheme is based on a difference-image technique, feature-extraction techniques and a combination of linear and nonlinear filtering methods. In order to improve the sensitivity of the nonlinear filtering method, we investigated various filter parameters. We found that with a combination of two filtering methods, one effective for subtle nodules and the other effective for moderately subtle nodules, sensitivity can be increased by approximately 15% at a given level of specificity.
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Hitoshi Yoshimura, Maryellen Lissak Giger, Tsuneo Matsumoto, Kunio Doi, Heber MacMahon, Steven M. Montner, "Investigation of new filtering schemes for computerized detection of lung nodules," Proc. SPIE 1445, Medical Imaging V: Image Processing, (1 June 1991); https://doi.org/10.1117/12.45201