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Proceedings Paper

CAD system for coronary calcifications based on helical CT images
Author(s): Yuji Ukai; Noboru Niki; Hitoshi Satoh; Sigeru Watanabe; Hironobu Ohmatsu; Kenji Eguchi; Noriyuki Moriyama
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Paper Abstract

In this paper, we describe a computer assisted diagnosis algorithm of coronary calcifications based on helical X-ray CT images which are used at the mass screening process for lung cancer diagnosis. Our diagnostic algorithm consists of four processes: Firstly, we choose the heart slices from the CT images which was taken from the mass screening, we classify the heart slices to three section. Second, we extract the heart region on each slice by the shape of the lung area and the body of vertebra. Third, the candidate regions of the coronary calcifications are detected by the difference calculus and thresholding process. Finally, to increase the effectiveness of the diagnostic processing, we cancel the artifacts included in the candidate regions by the diagnostic rules defined by us. We show here the result of our algorithm which is applied to helical CT images of 462 patients analyzed for lung cancer screening.

Paper Details

Date Published: 21 May 1999
PDF: 9 pages
Proc. SPIE 3661, Medical Imaging 1999: Image Processing, (21 May 1999); doi: 10.1117/12.348528
Show Author Affiliations
Yuji Ukai, Univ. of Tokushima (Japan)
Noboru Niki, Univ. of Tokushima (Japan)
Hitoshi Satoh, Toshiba Corp. (Japan)
Sigeru Watanabe, Chiba Medical School (Japan)
Hironobu Ohmatsu, National Cancer Ctr. Hospital East (Japan)
Kenji Eguchi, National Cancer Ctr. Hospital (Japan)
Noriyuki Moriyama, National Cancer Ctr. Hospital East (Japan)

Published in SPIE Proceedings Vol. 3661:
Medical Imaging 1999: Image Processing
Kenneth M. Hanson, Editor(s)

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