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Paper Abstract and Keywords
Presentation 2017-10-05 14:30
Analysis of pulse wave velocity by ultrasonic instantaneous measurement of small vibrations at multiple points on arterial wall
Mika Ito, Mototaka Arakawa, Hiroshi Kanai (Tohoku Univ.) US2017-59
Abstract (in Japanese) (See Japanese page) 
(in English) In the conventional pulse wave velocity (PWV) measurement methods, there are problems that the measurement range is wide and it’s assumed that the pulse wave has only an incident component. In the present study, we measured the velocity of the small vibration at multiple points in the longitudinal direction along the carotid arterial wall using ultrasound. Furthermore, we obtained the analytic signal of velocity waveform and calculated the local PWV by the least squares method. The incident and reflected components of the pulse wave were calculated just after the first heart sound of PCG. Additionally, a propagation component faster than the pulse wave was calculated just before the arrival of the incident component of the pulse wave and would be the propagation of the mechanical vibration. In the conventional method, the PWV can only be calculated at a characteristic time such as the rise time of the blood pressure waveforms. In the proposed method, in contrast, it became possible to calculated change with time of the local PWV at every time for every phase by using the phase of the analytic signals.
Keyword (in Japanese) (See Japanese page) 
(in English) ultrasound / carotid artery / phased-tracking method / pulse wave velocity / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 227, US2017-59, pp. 17-20, Oct. 2017.
Paper # US2017-59 
Date of Issue 2017-09-28 (US) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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 2017-10-05 - 2017-10-05 
Place (in Japanese) (See Japanese page) 
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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) Analysis of pulse wave velocity by ultrasonic instantaneous measurement of small vibrations at multiple points on arterial wall 
Sub Title (in English)  
Keyword(1) ultrasound  
Keyword(2) carotid artery  
Keyword(3) phased-tracking method  
Keyword(4) pulse wave velocity  
1st Author's Name Mika Ito  
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 14:30:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2017-59 
Volume (vol) vol.117 
Number (no) no.227 
Page pp.17-20 
Date of Issue 2017-09-28 (US) 

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