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ID 16034
Eprint ID
16034
フルテキストURL
Thumnail 99_1349.pdf 3.03 MB
タイトル(別表記)
Studies on ultrasonographic diagnosis of rectal cancer I. Experimental study on ultrasonic tissue characterization of rectal cancer
著者
曽我 浩之 岡山大学医学部第二外科学教室
抄録
In 81 cases of resected rectal cancer, quantitative analysis of B-mode ultrasonographic texture was studied in order to establish an ultrasonic tissue characterization of rectal cancer. A microcomputer-based system, interfaced with conventional diagnostic systems, was used for digital signal processing. The memory of the digital scan converter has 6-bit elements. The echo level of texture, which is the average amplitude of echo scattered back from the tissue, was compared between cancer and normal tissues. The echo level of rectal cancer tissue was significantly lower than that of the normal mucosal layer (p < 0.01). The echo level ratio was 0.7790 ± 0.0838 (mean ± S.D.). A high correlation of echo level was found between cancer tissue and the normal mucosal layer (r = 0.7367, p < 0.01). However, there was no significant difference between the echo level ratios of tissue of each histological type. Fixation with formaldehyde resulted in an equal increase in the echo levels of these tissues. It was demonstrated objectively and quantitatively that the echo level as an ultrasonic tissue characterization of rectal cancer was the lowest at the muscular layer and increased in the order of cancer, mucosal layer and subserosal layer. From these results, the author recommends that the obtained data should be applied to the clinical objective diagnosis of the spread of rectal cancer. This new method of ultrasonic tissue characterization is very useful.
キーワード
超音波組織特性
直腸癌
後方散乱波
digital signal processing
texture
発行日
1987-10-31
出版物タイトル
岡山医学会雑誌
出版物タイトル(別表記)
Journal of Okayama Medical Association
99巻
9-10号
出版者
岡山医学会
出版者(別表記)
Okayama Medical Association
開始ページ
1349
終了ページ
1361
ISSN
0030-1558
NCID
AN00032489
資料タイプ
学術雑誌論文
オフィシャル URL
https://www.jstage.jst.go.jp/article/joma1947/99/9-10/99_9-10_1349/_article/-char/ja/
関連URL
http://www.okayama-u.ac.jp/user/oma/index.html
言語
Japanese
著作権者
岡山医学会
論文のバージョン
publisher
査読
有り
Eprints Journal Name
joma