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Paper Abstract and Keywords
Presentation 2014-09-12 10:45
Classification of stenosis signals in shunt murmurs using nonsteady oscillation model
Masakazu Kiryu, Hatsuhiro Kato, Yutaka Suzuki, Mizuya Fukasawa, Osamu Sakata (Unv. of Yamanashi) BioX2014-11 MBE2014-34
Abstract (in Japanese) (See Japanese page) 
(in English) Many of hemodialysis patients undergo a plastic surgery of forming a shunt of blood vessels in their forearm. To detect the stenosis occurred in shunted vessels , diagnostic systems have been developed using vascular sounds. The vascular sounds from shunted vessels are termed as shunt murmurs, which is a non-steady signal synchronizing with the heart beats and includes the information about the stenosis level of vessels. In this study we propose a new method to extract signal features using non-steady oscillation model (ns-OM); This model expresses transient variations of a non-steady signal by using complex amplitudes and oscillation constants of monotonously changing oscillations.
Features of shunt murmurs were extracted by ns-OM and were compared with those obtained by the maximum entropy method (MEM). The ns-OM serves for extracting new adding feature and enables us to classify stenosis signals in details which were never possible with MEM. A prospect of improving the stenosis diagnosis was also obtained.
Keyword (in Japanese) (See Japanese page) 
(in English) hemodialysis / shunt / non-steady oscillation model / stenosis diagosis / / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 213, MBE2014-34, pp. 5-10, Sept. 2014.
Paper # MBE2014-34 
Date of Issue 2014-09-05 (BioX, MBE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 MBE BioX  
Conference Date 2014-09-12 - 2014-09-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Shinshu University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MBE 
Conference Code 2014-09-MBE-BioX 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Classification of stenosis signals in shunt murmurs using nonsteady oscillation model 
Sub Title (in English)  
Keyword(1) hemodialysis  
Keyword(2) shunt  
Keyword(3) non-steady oscillation model  
Keyword(4) stenosis diagosis  
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1st Author's Name Masakazu Kiryu  
1st Author's Affiliation University of Yamanashi Graduate School (Unv. of Yamanashi)
2nd Author's Name Hatsuhiro Kato  
2nd Author's Affiliation University of Yamanashi Graduate School (Unv. of Yamanashi)
3rd Author's Name Yutaka Suzuki  
3rd Author's Affiliation University of Yamanashi Graduate School (Unv. of Yamanashi)
4th Author's Name Mizuya Fukasawa  
4th Author's Affiliation University of Yamanashi Graduate School (Unv. of Yamanashi)
5th Author's Name Osamu Sakata  
5th Author's Affiliation University of Yamanashi Graduate School (Unv. of Yamanashi)
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Speaker Author-1 
Date Time 2014-09-12 10:45:00 
Presentation Time 25 minutes 
Registration for MBE 
Paper # BioX2014-11, MBE2014-34 
Volume (vol) vol.114 
Number (no) no.212(BioX), no.213(MBE) 
Page pp.5-10 
#Pages 6 
Date of Issue 2014-09-05 (BioX, MBE) 

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