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| Presentation | 2017-10-05 14:55 Ultrasonic measurement of propagation of myocardial contraction response in interventricular septum Itsuki Kobayashi, Mototaka Arakawa, Hiroshi Kanai (Tohoku Univ.)  US2017-60 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | It is known that ischemia occurred in the cardiac muscle introduces abnormality in the contraction function of the myocardium in the ischemic region. Therefore, if we can measure myocardial contractile movement caused by electrical excitation, there is a possibility of early detection of cardiomyocyte abnormalities due to disease. However, the mechanism of the transition process in myocardial contraction has not been fully elucidated. In the present study, we analyzed the two-dimensional motion in the heart wall using the speckle tracking method for the ultrasonic RF signals measured at the high frame rate and evaluated the contraction characteristic of the myocardium. We estimated the two dimensional velocity of the interventricular septum (IVS) at the time near the R-wave of the electrocardiogram (ECG) and observed the motion transiting to the contraction. Furthermore, the state of propagation of myocardial contraction response was evaluated by estimating the temporal change of the spatial distribution in the velocity waveforms and their phase components. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Ultrasound / Heart wall / High frame rate / Speckle tracking / Propagation of myocardial contraction response / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 227, US2017-60, pp. 21-26, Oct. 2017. | |
| Paper # | US2017-60 | |
| Date of Issue | 2017-09-28 (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) | |
| Download PDF | US2017-60 |
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| Conference Information | |
| Committee | US |
| Conference Date | 2017-10-05 - 2017-10-05 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | US |
| Conference Code | 2017-10-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Ultrasonic measurement of propagation of myocardial contraction response in interventricular septum |
| Sub Title (in English) | |
| Keyword(1) | Ultrasound |
| Keyword(2) | Heart wall |
| Keyword(3) | High frame rate |
| Keyword(4) | Speckle tracking |
| Keyword(5) | Propagation of myocardial contraction response |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Itsuki Kobayashi |
| 1st Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 2nd Author's Name | Mototaka Arakawa |
| 2nd Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 3rd Author's Name | Hiroshi Kanai |
| 3rd Author's Affiliation | Tohoku University (Tohoku Univ.) |
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| Speaker | Author-1 |
| Date Time | 2017-10-05 14:55:00 |
| Presentation Time | 25 minutes |
| Registration for | US |
| Paper # | US2017-60 |
| Volume (vol) | vol.117 |
| Number (no) | no.227 |
| Page | pp.21-26 |
| #Pages | 6 |
| Date of Issue | 2017-09-28 (US) |
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