Abstract
This paper presents some results of the computer diagnosis of roentgenography of the stomach for the preliminary screening in the mass examination. The authors take up the upright barium-filled picture which is the fundamental picture of a stomach at first, since no less than one third of the organic diseases of the stomach can be detected by this picture using only the contour information.
Some logical programs of the processing system are made for the computer diagnosis. Several methods are presented and exemplified concerning the smoothing of the picture for detecting abnormalities, the recognition of the gastric angle, the determination of the gastric axis, and the choice of the parameters for detecting the irregularity of the gastric contour.
These methods will be improved by studying further examples and by rearranging individual subprograms to constitute an overall diagnostic system.
