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Paper Abstract and Keywords
Presentation 2008-01-29 15:15
A Realization of Active Noise Control System for MR Noise -- A Study on the Available ANC System in Magnetic Field --
Yusuke Ono, Daisuke Tokunaga, Yoshinobu Kajikawa (Kansai Univ.), Tohru Tani, Yoshimasa Kurumi (Shiga Univ. of Medical Science), Yasuo Nomura (Kansai Univ.) EA2007-110
Abstract (in Japanese) (See Japanese page) 
(in English) MRI(Magnetic Resonance Imaging) is a medical equipment system which in late years has been used to obtain the cross-sectional image of the human body.An open-configuration MR system is introduced at Shiga University of Medical Science in order to conduct microwave coaguration therapy by using near-real-time MR images.MR systems generates a very large noise (about 120dBSPL).Hence, an operator cannot communicate other medical staff (ex. nurses and anesthesists) and is exposed to the large MR noise for a long time. This shows an elevated risk of the operation. We therefore attempt to implement an active noise control (ANC) system in order to reduce the MR noise.However, MRI generates too intense magnetic field for dynamic acoustic equipment to be used. In this paper, therefore, the cancellation performance of an ANC system using piezo-electric loud speaker is demonstrated through experimental results in order to realize the available ANC system in magnetic field.
Keyword (in Japanese) (See Japanese page) 
(in English) active noise control / MRI / DSP / piezo-electric loud speaker / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 470, EA2007-110, pp. 53-58, Jan. 2008.
Paper # EA2007-110 
Date of Issue 2008-01-22 (EA) 
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 EA US  
Conference Date 2008-01-28 - 2008-01-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Kansai University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To EA 
Conference Code 2008-01-EA-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Realization of Active Noise Control System for MR Noise 
Sub Title (in English) A Study on the Available ANC System in Magnetic Field 
Keyword(1) active noise control  
Keyword(2) MRI  
Keyword(3) DSP  
Keyword(4) piezo-electric loud speaker  
1st Author's Name Yusuke Ono  
1st Author's Affiliation Kansai University (Kansai Univ.)
2nd Author's Name Daisuke Tokunaga  
2nd Author's Affiliation Kansai University (Kansai Univ.)
3rd Author's Name Yoshinobu Kajikawa  
3rd Author's Affiliation Kansai University (Kansai Univ.)
4th Author's Name Tohru Tani  
4th Author's Affiliation Shiga University of Medical Science (Shiga Univ. of Medical Science)
5th Author's Name Yoshimasa Kurumi  
5th Author's Affiliation Shiga University of Medical Science (Shiga Univ. of Medical Science)
6th Author's Name Yasuo Nomura  
6th Author's Affiliation Kansai University (Kansai Univ.)
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Speaker Author-1 
Date Time 2008-01-29 15:15:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2007-110 
Volume (vol) vol.107 
Number (no) no.470 
Page pp.53-58 
Date of Issue 2008-01-22 (EA) 

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