CAD system for coronary calcifications based on helical CT images

Yuji Ukai; Noboru Niki; Hitoshi Satoh; Sigeru Watanabe; Hironobu Ohmatsu; Kenji Eguchi; Noriyuki Moriyama

doi:10.1117/12.348528

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21 May 1999 CAD system for coronary calcifications based on helical CT images

Yuji Ukai, Noboru Niki, Hitoshi Satoh, Sigeru Watanabe, Hironobu Ohmatsu, Kenji Eguchi, Noriyuki Moriyama

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Proceedings Volume 3661, Medical Imaging 1999: Image Processing; (1999) https://doi.org/10.1117/12.348528
Event: Medical Imaging '99, 1999, San Diego, CA, United States

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.

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Yuji Ukai, Noboru Niki, Hitoshi Satoh, Sigeru Watanabe, Hironobu Ohmatsu, Kenji Eguchi, and Noriyuki Moriyama "CAD system for coronary calcifications based on helical CT images", Proc. SPIE 3661, Medical Imaging 1999: Image Processing, (21 May 1999); https://doi.org/10.1117/12.348528

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