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Proceedings Paper

Computerized interpretation of solitary pulmonary nodules
Author(s): Hideo Suzuki; Hirotsugu Takabatake; Masaki Mori; Masanobu Mitani; Hiroshi Natori
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Paper Abstract

In physicians' interpretation, morphologic characteristics of pulmonary nodules are not only important signs for the discrimination, but also important features for the diagnosis with a reasonable degree of confidence. This paper describes about the computerized interpretation system which is developed to analyze the relation between the measuring values and the morphologic characteristics, and to make clear the logic of physicians' diagnosis. We think that the four basic morphologic characteristics of the discriminative diagnosis between benign and malignant nodules exist which are: (1) the density; (2) the homogeneity; (3) the definition; and (4) the convergence. To obtain each grade of the parameters, we developed an interpretation system. On the other hand, to obtain digital feature values, we used our computer aided diagnosis system. Interpretation experiments were performed by using 15 benign and 19 malignant cases of chest x-ray CT images. As the result of a statistical analysis, some digital features have the significant differences between benign and malignant nodules, and the morphological characteristics have also differences. Therefore the computerized system is feasible to help physicians' interpretation to distinct between malignant and benign nodules by showing digital feature values as some references.

Paper Details

Date Published: 21 April 1998
PDF: 6 pages
Proc. SPIE 3340, Medical Imaging 1998: Image Perception, (21 April 1998); doi: 10.1117/12.306178
Show Author Affiliations
Hideo Suzuki, IBM Japan, Ltd. (Japan)
Hirotsugu Takabatake, Minami-Ichijo Hospital (Japan)
Masaki Mori, Sapporo Kosei Hospital (Japan)
Masanobu Mitani, Sapporo Medical Univ. (Japan)
Hiroshi Natori, Sapporo Medical Univ. (Japan)

Published in SPIE Proceedings Vol. 3340:
Medical Imaging 1998: Image Perception
Harold L. Kundel, Editor(s)

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