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| Presentation | 2009-01-30 10:35 Head-mounted Active Noise Control System for Reducing MR Noise Masahiro Kida, Ryotaro Hirayama, Yoshinobu Kajikawa (Kansai Univ.), Tohru Tani, Yoshimasa Kurumi (Shiga Univ.)  EA2008-126 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | MRI(Magnetic Resonance Imaging) device is medical equipment which 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 generate a serious noise (about 105dBSPL). Hence, operators and other medical staff (ex. nurses and anesthesists) are exposed to the large MR noise for many hours and cannot communicate with each other. This is 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 device generates too intense magnetic field for dynamic acoustic equipment. To solve this problem, we have proposed a head-mounted ANC system using piezoelectric loud speakers and optical microphones. In this paper, the cancellation performance of the head-mounted ANC system is demonstrated through some experimental results in order to prove the availability of the system in magnetic field. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | active noise control / MRI / DSP / piezoelectric loudspeaker / feedback ANC / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 411, EA2008-126, pp. 61-66, Jan. 2009. | |
| Paper # | EA2008-126 | |
| Date of Issue | 2009-01-22 (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 | EA2008-126 |
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| Conference Information | |
| Committee | EA US |
| Conference Date | 2009-01-29 - 2009-01-30 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | EA |
| Conference Code | 2009-01-EA-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Head-mounted Active Noise Control System for Reducing MR Noise |
| Sub Title (in English) | |
| Keyword(1) | active noise control |
| Keyword(2) | MRI |
| Keyword(3) | DSP |
| Keyword(4) | piezoelectric loudspeaker |
| Keyword(5) | feedback ANC |
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| Keyword(8) | |
| 1st Author's Name | Masahiro Kida |
| 1st Author's Affiliation | Kansai University (Kansai Univ.) |
| 2nd Author's Name | Ryotaro Hirayama |
| 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 Univercity of Medical Science (Shiga Univ.) |
| 5th Author's Name | Yoshimasa Kurumi |
| 5th Author's Affiliation | Shiga Univercity of Medical Science (Shiga Univ.) |
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| Speaker | Author-1 |
| Date Time | 2009-01-30 10:35:00 |
| Presentation Time | 25 minutes |
| Registration for | EA |
| Paper # | EA2008-126 |
| Volume (vol) | vol.108 |
| Number (no) | no.411 |
| Page | pp.61-66 |
| #Pages | 6 |
| Date of Issue | 2009-01-22 (EA) |
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