Improved detection of lung nodules on chest radiographs using a commercial computer-aided diagnosis system.

Improved detection of lung nodules on chest radiographs using a commercial computer-aided diagnosis system. Research Abstract Details 

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Improved detection of lung nodules on chest radiographs using a commercial computer-aided diagnosis system. Abstract Text:

Shingo Kakeda,Junji Moriya,Hiromi Sato,Takatoshi Aoki,Hideyuki Watanabe,Hajime Nakata,Nobuhiro Oda,Shigehiko Katsuragawa,Keiji Yamamoto,Kunio Doi,

OBJECTIVE: The aim of this study was to evaluate the usefulness of a new commercially available computer-aided diagnosis (CAD) system with an automated method of detecting nodules due to lung cancers on chest radiograph. MATERIALS AND METHODS: For patients with cancer, 45 cases with solitary lung nodules up to 25 mm in diameter (nodule size range, 8-25 mm in diameter; mean, 18 mm; median, 20 mm) were used. For healthy patients, 45 cases were selected on the basis of confirmation on chest CT. All chest radiographs were obtained with a computed radiography system. The CAD output images were produced with a newly developed CAD system, which consisted of an image server including CAD software called EpiSight/XR. Eight radiologists (four board-certified radiologists and four radiology residents) participated in observer performance studies and interpreted both the original radiographs and CAD output images using a sequential testing method. The observers' performance was evaluated with receiver operating characteristic analysis. RESULTS: The average area under the curve value increased significantly from 0.924 without to 0.986 with CAD output images. Individually, the use of CAD output images was more beneficial to radiology residents than to board-certified radiologists. CONCLUSION: This CAD system for digital chest radiographs can assist radiologists and has the potential to improve the detection of lung nodules due to lung cancer.

Improved detection of lung nodules on chest radiographs using a commercial computer-aided diagnosis system. Publishing Authors By Initials

S Kakeda,J Moriya,H Sato,T Aoki,H Watanabe,H Nakata,N Oda,S Katsuragawa,K Yamamoto,K Doi,

For similar investigative techniques: epidemiologic methods: epidemiologic research design: reproducibility of results research abstracts see: investigative techniques: epidemiologic methods: epidemiologic research design: reproducibility of results research

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Improved detection of lung nodules on chest radiographs using a commercial computer-aided diagnosis system. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: AJR. American journal of roentgenology

VOLUME: 182

Page Numbers: 505-10

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ISSN: 0361-803X

DAY: 15

MONTH: Feb

YEAR: 2004

Improved detection of lung nodules on chest radiographs using a commercial computer-aided diagnosis system. Information

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LANGUAGE: eng

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Improved detection of lung nodules on chest radiographs using a commercial computer-aided diagnosis system. Keywords Mesh Terms:

KEYWORDS: Reproducibility of Results

MESH TERMS: methods

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AFFILIATION: Department of Radiology, University of Occupational and Environmental Health School of Medicine, Iseigaoka 1-1, Yahatanisi-ku, Kitakyushu-shi 807-8555, Japan. kakeda@med.uoeh-u.ac.jp

Country: United States

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MEDLINETA: AJR Am J Roentgenol

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