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Evaluation of Coronary Arterial Stenosis before and after PTCA:Visual Estimation Versus Computer-Assisted Analysis Takahisa Sawada 1 , Akihiro Azuma 1 , Keizo Furukawa 1 , Satoshi Terashima 1 , Kouichi Kawata 1 , Hirotaka Tatsukawa 1 , Hiroki Sugihara 1 , Yoshio Kono 1 , Jun Asayama 1 , Hiroshi Katsume 1 , Masao Nakagawa 1 1The Second Department of Medicine, Kyoto Prefectural University of Medicine Keyword: edge detection method , cinevideodensitometry , 経皮的冠動脈形成術(percutaneous transluminal coronary angioplasty) pp.255-260
Published Date 1991/3/15
DOI https://doi.org/10.11477/mf.1404900240
  • Abstract
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Coronary arteriogram of 34 patients who underwent percutaneous transluminal coronary angioplasty (PTCA) were evaluated visually and by computer-assisted analysis, that employed an edge detection method and cinevideodensitometry. The results of visual estimation were in general agreement with those of computer-assisted analysis for determination of per-cent area of stenosis in severe stenosis, and percent diameter of stenosis in slightly stenotic lesions. Before PTCA, the findings obtained by densitometry agreed with those using the edge detection method.


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

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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