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Japanese

Diagnosis of Early Colorectal Cancer Based on Computer Analysis of Magnifying Endoscopic Image Akitada Iso 1 , Masahiro Tada 1 , Masako Okamura 1 , Hirotomo Ootsuka 1 , Seiji Shimizu 1 , Keiichi Kawai 2 1The Second Department of Internal Medicine, Kyoto First Red Cross Hospital 2Department of Preventive Medicine, Kyoto Prefectural University of Medicine Keyword: 早期大腸癌 , 拡大観察 , 画像解析 pp.787-792
Published Date 1991/7/25
DOI https://doi.org/10.11477/mf.1403102585
  • Abstract
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 To introduce a quantitative approach in the diagnosis of early colorectal cancer, we conducted magnifying observation for colorectal elevated lesions and analyzed the images by computer. The subjects included 5 cases with metaplastic polyp, 23 with tubular adenoma, 7 with early cancer and 12 with advanced cancer. After extraction of surface patterns, 6 indices were calculated: "width", "area", "elongation", "irregularity", "dilatation" and "brightness". The results were that the indices including "area", "irregularity", "dilatation" and "brightness" of early cancers were valued between those of advanced cancers and of tubular adenomas respectively. These results suggested the possibility of a quantitative approach in the diagnosis of early cancer. For more precise diagnosis, the following improvements are considered to be needed: (1) use of instrument with higher magnifying power, (2) mechanical device to keep the distance between the scope and object constant, (3) elimination of noise.


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

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

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