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Paper Abstract and Keywords
Presentation 2011-07-29 10:30
Visualization of Nonlinear Wave Propagation on Cardiac Tissue [ I ] -- Presentative Vector Field Aproach on Phase Gradient --
Yoshifumi Harada (Fukui Univ.), Akinori Inoue, Takashi Okada, Akimitsu Harada, Yoshihiro Yoshikawa (HAM), Naoaki Bekki (Nihon Univ.), Hiroshi Kanai (Tohoku Univ.) US2011-32
Abstract (in Japanese) (See Japanese page) 
(in English) Abstract In human heart, it is responsible for pumping blood through the blood vessels by repeated, rhythmic contractions. The ability to noninvasively detect regional dynamic myocardial damage related to action potentials and mechanical properties affected by heart disease is of great clinical importance. The most well known are the significant recent development of the ultrasonic measurement of myocardial motion in vivo already found by Kanai et’al [1], for the first time, by which some pulsive waves are spontaneously excited by aortic-valve closure(AVC) at end-systole(T0) [1]. They measured these vibrations almost simultaneously at about 10,000 points set in the heart wall at a high temporal resolution by using a sparse sector scan. On the other hand, the phase-dynamics approach to the investigation of oscillatory media has played a major role, but it has mainly been applied to only spatially local systems and globally coupled systems. The quantitative analysis of these complex spatiotemporal patterns of activation require the development of new tools that allow for identifying and tracking the most important topological feature of the patterns such as cardiac fibrillation. In this presentation, we have proposed , for the first time, “ the vector field phase gradient mapping method with phase singularity(VFPGM) ” and would like to demonstrate quantitative analysis of complex self-excitatory wave patterns such as cardiac myocardial motion by using vector analytical approach for this VFPGM.
Keyword (in Japanese) (See Japanese page) 
(in English) Keyword CGLE(Complex Ginzburg Landau Equation)，Chaos，Fractal，PHS(Propagating Hole Solution), vector field phase gradient mapping method(VFPGM), / Chaos， / Fractal / PHS(Propagating Hole Solution), / vector field phase gradient mapping method(VFPGM), / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 158, US2011-32, pp. 55-60, July 2011.
Paper # US2011-32 
Date of Issue 2011-07-21 (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 2011-07-28 - 2011-07-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyoto Electronics Manufacturing Co., Ltd. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Material Proparty, General 
Paper Information
Registration To US 
Conference Code 2011-07-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Visualization of Nonlinear Wave Propagation on Cardiac Tissue [ I ] 
Sub Title (in English) Presentative Vector Field Aproach on Phase Gradient 
Keyword(1) Keyword CGLE(Complex Ginzburg Landau Equation)，Chaos，Fractal，PHS(Propagating Hole Solution), vector field phase gradient mapping method(VFPGM),  
Keyword(2) Chaos，  
Keyword(3) Fractal  
Keyword(4) PHS(Propagating Hole Solution),  
Keyword(5) vector field phase gradient mapping method(VFPGM),  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Yoshifumi Harada  
1st Author's Affiliation Fukui University (Fukui Univ.)
2nd Author's Name Akinori Inoue  
2nd Author's Affiliation Hitachi-Aloka Medical (HAM)
3rd Author's Name Takashi Okada  
3rd Author's Affiliation Hitachi-Aloka Medical (HAM)
4th Author's Name Akimitsu Harada  
4th Author's Affiliation Hitachi-Aloka Medical (HAM)
5th Author's Name Yoshihiro Yoshikawa  
5th Author's Affiliation Hitachi-Aloka Medical (HAM)
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 2011-07-29 10:30:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2011-32 
Volume (vol) vol.111 
Number (no) no.158 
Page pp.55-60 
#Pages 6 
Date of Issue 2011-07-21 (US) 

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