IEICE Technical Committee Submission System
Conference Paper's Information
Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2010-08-10 13:45
Visualization of propagation of myocardial response to electric excitation in human hearts by ultrasonic measurement of vibrations
Hiroshi Kanai (Tohoku Univ.) EA2010-55
Abstract (in Japanese) (See Japanese page) 
(in English) Electrocardiography is an invaluable clinical tool for diagnosis of a broad range of cardiac conditions, and clinical imaging tools. The aim of the present study is to visualize subtle features of the initial myocardial response to the propagation of the electrochemical depolarization waves, which corresponds to the beginning of the heart contraction. The three-dimensional propagation of the proximate response to the electrical excitation caused by cell polarization in the human heart wall was visualized by a novel ultrasonic-based measurement method noninvasively for the first time. Visualization demonstrated that at the time of the Q-wave of the electrocardiogram, pulsive vibration is generated at the center of the interventricular septum, and progresses to the entire left ventricle at a propagation speed of about 0.8 m/s. The subtle dynamic response of the myocardium to the arrival of electrical excitation visualized by this approach with a high temporal resolution of 2 ms shows great potential for noninvasive assessment of heart wall damage due to heart failure and desynchronization due to fibrillation.
Keyword (in Japanese) (See Japanese page) 
(in English) Action potentials / depolarization / echocardiography / imaging / ultrasonics / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 171, EA2010-55, pp. 69-73, Aug. 2010.
Paper # EA2010-55 
Date of Issue 2010-08-02 (EA) 
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)
Download PDF EA2010-55

Conference Information
Committee EA  
Conference Date 2010-08-09 - 2010-08-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Tohoku Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Acoustic Signal Processing, Psychological and Physiological Acoustics, and Related Topics 
Paper Information
Registration To EA 
Conference Code 2010-08-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Visualization of propagation of myocardial response to electric excitation in human hearts by ultrasonic measurement of vibrations 
Sub Title (in English)  
Keyword(1) Action potentials  
Keyword(2) depolarization  
Keyword(3) echocardiography  
Keyword(4) imaging  
Keyword(5) ultrasonics  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Hiroshi Kanai  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name  
2nd Author's Affiliation ()
3rd Author's Name  
3rd Author's Affiliation ()
4th Author's Name  
4th Author's Affiliation ()
5th Author's Name  
5th Author's Affiliation ()
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
Speaker Author-1 
Date Time 2010-08-10 13:45:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2010-55 
Volume (vol) vol.110 
Number (no) no.171 
Page pp.69-73 
#Pages
Date of Issue 2010-08-02 (EA) 


[Return to Top Page]

[Return to IEICE Web Page]


The Institute of Electronics, Information and Communication Engineers (IEICE), Japan