A quality design of bone conduction voice in magnetic resonance imaging noise

Kojiro Takahashi, Kenji Muto, Kazuo Yagi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

  • 1 Citations

Abstract

The acoustical driving noise of a magnetic resonance imaging (MRI) device is loud. A bone conduction microphone is used to transmit the patient's voice because it works better than other microphones during an MRI examination. However, when the patient becomes unwell, the doctor cannot understand the transmitted voice of the patient because the voice is faint and the MRI acoustical noise is loud. The MRI acoustical noise generates a vibration in the patient body. The vibration propagates to the microphone and deteriorates the communication quality. Our goal is to explore the relation between the shielding area of the bone conduction microphone and the communication quality. We propose a theoretical formula for the characteristic of the vibration propagation and the ratio of the vibration acceleration to the sound pressure based on a distributed constant. The communication quality in the case of the shielding the bone conduction microphone was verified using the theoretical formula. The estimated communication quality was equal to the experimental communication quality with high accuracy. The results show that the communication quality could be improved by a shielding area, such as an earmuff, to a level where the doctor could recognize the patient's faint voice.

LanguageEnglish
Title of host publicationProceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future
PublisherGerman Acoustical Society (DEGA)
Pages2713-2720
Number of pages8
StatePublished - 2016 Aug 21
Event45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016 - Hamburg, Germany
Duration: 2016 Aug 212016 Aug 24

Other

Other45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016
CountryGermany
CityHamburg
Period16/8/2116/8/24

Fingerprint

bones
magnetic resonance
microphones
communication
conduction
shielding
vibration
sound pressure
examination
propagation

Keywords

  • Bone conduction microphone
  • MRI acoustical noise
  • Vibration

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Takahashi, K., Muto, K., & Yagi, K. (2016). A quality design of bone conduction voice in magnetic resonance imaging noise. In Proceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future (pp. 2713-2720). German Acoustical Society (DEGA).

A quality design of bone conduction voice in magnetic resonance imaging noise. / Takahashi, Kojiro; Muto, Kenji; Yagi, Kazuo.

Proceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future. German Acoustical Society (DEGA), 2016. p. 2713-2720.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Takahashi, K, Muto, K & Yagi, K 2016, A quality design of bone conduction voice in magnetic resonance imaging noise. in Proceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future. German Acoustical Society (DEGA), pp. 2713-2720, 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016, Hamburg, Germany, 16/8/21.
Takahashi K, Muto K, Yagi K. A quality design of bone conduction voice in magnetic resonance imaging noise. In Proceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future. German Acoustical Society (DEGA). 2016. p. 2713-2720.
Takahashi, Kojiro ; Muto, Kenji ; Yagi, Kazuo. / A quality design of bone conduction voice in magnetic resonance imaging noise. Proceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future. German Acoustical Society (DEGA), 2016. pp. 2713-2720
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