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Japanese

Easy method for measurement of opening angle of the Björk-Shiley valve with two computers:Proof of floating phenomenon of the Björk-Shiley valve Tsuyoshi Akanuma 1 , Hideo Matsuzawa 1 , Shoji Eguchi 1 , Eiichiro Aoki 2 , Yoshifumi Sakurai 2 1The 2nd Department of Surgery, Niigata University School of Medicine 2The 2nd Department of Surgery, Niigata Shimin Hospital pp.623-627
Published Date 1979/6/15
DOI https://doi.org/10.11477/mf.1404203380
  • Abstract
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Dr. Soma and his coworkers presented a new method for measurement of opening angle of the Björk-Shiley valve (B-S valve) at the Meating of the Japanese Association for Thoracic Surgeryin 1977. His method is complicated enough to calculate the opening angle of many frames of cine-film for short time. We advocated a new equation for calculation of opening angle with two computers (NAC cardias G. P. 2000, TEXAS TI-59).

We measured the opening angle of 7 cases (they were all implanted B-S valves, 5 were mitral and 2 were aortic).


Copyright © 1979, 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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