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Paper Abstract and Keywords
Presentation 2012-07-27 10:40
Propagation of the Spatiotemporal Dynamics in Nonlinear Waves on Interventricular Septum Wall
Yoshifumi Harada (Fukui Univ.), Noriaki Inoue, Takashi Okada, Akimitsu Harada, Yoshihiro Yoshikawa (Hitachi Aroka Medical), Naoaki Bekki (Nihon Univ.), Hiroshi Kanai (Tohoku Univ.) US2012-28
Abstract (in Japanese) (See Japanese page) 
(in English) It is now widely well accepted that most of the heart is made up of contractile muscle cells, also known as myocytes or, more specifically, cardiomyocytes [1 ]. Within the cardiac septum wall, stress and strain are important determinants of the distributions over the cardiac wall of blood flow [2]. The ability to non-invasively detect regional dynamic myocardial damage related to action potentials and mechanical properties affected by heart diseases is of great clinical importance [3]. Kanai et’ al have previously discovered that pulsive wave are spontaneously excited by aortic-valve closer (AVC) at the end-systole by using the ultrasonic measurement of myocardial motion. These wave may serve as an ideal source of the intrinsic heart sound caused by AVC[4]. Recently, we have successfully confirmed, for the first time, the experimental evidence of the validity of the overall consistency of quantitative comparison of localized Bekki-Nozaki (BN) localized amplitude holes in an experiment with BN hole solutions of the Complex Ginzburg Landau Equation (CGLE), the relevant amplitude equation [5]. Purpose of this report is to show that by using the precise vector mapping analyses due to the phase gradient method, we analyze and confirm the strong evidence of the spatiotemporal chaos due to the measurement of the data obtained by Kanai et al [2] according to following two categories but same subject: timing sequence as a measuring regime 1) from the beginning of near the P-waves to R-wave regime(QRS-complex) 2) near T wave peak to the intermediate state of the first sound [5].
Keyword (in Japanese) (See Japanese page) 
(in English) Chaos / CGLE / Phase Tracking / Bekki-Nozaki hole / phase tracking / convective instabilities / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 146, US2012-28, pp. 47-54, July 2012.
Paper # US2012-28 
Date of Issue 2012-07-19 (US) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee US  
Conference Date 2012-07-26 - 2012-07-27 
Place (in Japanese) (See Japanese page) 
Place (in English) KEM 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Material Proparty, General 
Paper Information
Registration To US 
Conference Code 2012-07-US 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Propagation of the Spatiotemporal Dynamics in Nonlinear Waves on Interventricular Septum Wall 
Sub Title (in English)  
Keyword(1) Chaos  
Keyword(2) CGLE  
Keyword(3) Phase Tracking  
Keyword(4) Bekki-Nozaki hole  
Keyword(5) phase tracking  
Keyword(6) convective instabilities  
Keyword(7)  
Keyword(8)  
1st Author's Name Yoshifumi Harada  
1st Author's Affiliation Fukui University (Fukui Univ.)
2nd Author's Name Noriaki Inoue  
2nd Author's Affiliation Hitachi Aloka Medical (Hitachi Aroka Medical)
3rd Author's Name Takashi Okada  
3rd Author's Affiliation Hitachi Aloka Medical (Hitachi Aroka Medical)
4th Author's Name Akimitsu Harada  
4th Author's Affiliation Hitachi Aloka Medical (Hitachi Aroka Medical)
5th Author's Name Yoshihiro Yoshikawa  
5th Author's Affiliation Hitachi Aloka Medical (Hitachi Aroka Medical)
6th Author's Name Naoaki Bekki  
6th Author's Affiliation Nihon University (Nihon Univ.)
7th Author's Name Hiroshi Kanai  
7th Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2012-07-27 10:40:00 
Presentation Time 20 minutes 
Registration for US 
Paper # US2012-28 
Volume (vol) vol.112 
Number (no) no.146 
Page pp.47-54 
#Pages 8 
Date of Issue 2012-07-19 (US) 

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