雑誌文献を検索します。書籍を検索する際には「書籍検索」を選択してください。

検索

書誌情報 詳細検索 by 医中誌

Japanese

Differential Diagnosis between Benign Gastric Ulcer and Depressed-type Early Gastric Cancer by an Image Processing Method: Focusing on Type Ⅲ Naofumi Osaka 1 , Kiyoshi Ashida 1 , Masaya Tanaka 1 , Masahiro Sakaguchi 1 , Ichiro Hirata 1 , Saburo Ohshiba 1 1The Second Department of Internal Medicine, Osaka Medical College Keyword: 電子内視鏡 , Ⅲ型早期胃癌 , 再生粘膜 , 鑑別診断 pp.1011-1018
Published Date 1991/9/25
DOI https://doi.org/10.11477/mf.1403102634
  • Abstract
  • Look Inside

 Endoscopic diagnosis has been nearly perfected and diagnostic problems are rarely encountered in the great majority of patients. Nevertheless, there are occasions when cancer may be mistaken for an ulcer or an ulcer easily confused with a cancer.

 It was difficult to differentiate between the redness of regenerating mucosa at the edge of an ulcer and the redness of a cancer lesion using a conventional fiberscope. But it is easy to distinguish between the regenerating mucosal pattern of an ulcer and the uneven punctate redness of a cancer with an electronic endoscope which provides a fine resolvable image. With this in mind, we attempted to differentiate between depressed-type early gastric cancer and benign gastric ulcer using an electronic endoscope (TGS-50B;Toshiba-Machida) and an image analyzer (SPICCA;JapanAVIONICS).

 We observed ulcerative lesions in detail with the electronic endoscope, and used the image analyzer to convert the redness surrounding the ulcer into binary digitized data. Next, the binary digitized pattern was separated into minimum units of gastric mucosal pits, an oval was postulated which possessed an inertial moment identical to each of the particles, and calculating its oval specification (OSF) value as th eratio of its long diameter to its short diameter, we used the average value of 20 particles as the image value.

 Evaluating the results of differential diagnosis of benign gastric ulcer and cancer-associated ulcer based on the OSF values obtained by image analysis gave the following results :

 (1) During the healing process, high OSF value in the entire periphery of the ulcer and a long, neat, string-like regenerating mucosal pattern indicate a benign ulcer.

 (2) The absence of a neat, string-like regenerating mucosal pattern in a portion of the margin of a gastric ulcer indicates that a malignant lesion should be suspected at that site.


Copyright © 1991, Igaku-Shoin Ltd. All rights reserved.

基本情報

電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

関連文献

もっと見る

文献を共有