| Presentation | 2009-01-30 Head-mounted Active Noise Control System for Reducing MR Noise Masahiro KIDA, Ryotaro HIRAYAMA, Yoshinobu KAJIKAWA, Tohru TANI, Yoshimasa KURUMI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | active noise control / MRI / DSP / piezoelectric loudspeaker / feedback ANC |
| Paper # | EA2008-126 |
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| Committee | EA |
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| Conference Date | 2009/1/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Engineering Acoustics (EA) |
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| Language | JPN |
| 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 |
| 1st Author's Name | Masahiro KIDA |
| 1st Author's Affiliation | Faculty of Engineering Science, Kansai University() |
| 2nd Author's Name | Ryotaro HIRAYAMA |
| 2nd Author's Affiliation | Faculty of Engineering Science, Kansai University |
| 3rd Author's Name | Yoshinobu KAJIKAWA |
| 3rd Author's Affiliation | Faculty of Engineering Science, Kansai University |
| 4th Author's Name | Tohru TANI |
| 4th Author's Affiliation | Shiga University of Medical Science |
| 5th Author's Name | Yoshimasa KURUMI |
| 5th Author's Affiliation | Shiga University of Medical Science |
| Date | 2009-01-30 |
| Paper # | EA2008-126 |
| Volume (vol) | vol.108 |
| Number (no) | 411 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |