A study of sound intensity measurement of MRI driving sound

Kenji Muto, Shibayama Hideo, Yagi Kazuo, Eguchi Kentaro, Takano Kunihiko, Guoyue Chen

研究成果: Conference contribution

抄録

MRI (Magnetic Resonance Imaging) examination is an important examination in the medical diagnosis. MRI is a technology to image the distribution of inside of body with the nuclear magnetic resonance phenomenon. At this time, noise is generated by using the gradient magnetic field for decision of the imaging position. The noise level is around 100dB though this noise level depends on the imaging method or the resolution parameter. The noise makes subjects of MRI examination revolted, and it makes the ear-protector necessary. It is important to know the noise and to measure the noise for soundproofing. However, it is not clear that the driving sound propagates in MRI examination room. Then, we report the measured result on the sound intensity vector of the driving sound around the gantry of MRI equipment. The analyzed signal was the pulse of the auto-tuning brought by the first stage of imaging operation. The results in the measurement points at 19 points in the boa and 27 points above the table outside the boa were shown. It was shown the MRI driving sound radiated from the gantry side surface, and the vector direction in the boa was a complex result.

本文言語English
ホスト出版物のタイトル38th International Congress and Exposition on Noise Control Engineering 2009, INTER-NOISE 2009
ページ4910-4916
ページ数7
出版ステータスPublished - 2009 12 1
イベント38th International Congress and Exposition on Noise Control Engineering 2009, INTER-NOISE 2009 - Ottawa, ON, Canada
継続期間: 2009 8 232009 8 26

出版物シリーズ

名前38th International Congress and Exposition on Noise Control Engineering 2009, INTER-NOISE 2009
7

Conference

Conference38th International Congress and Exposition on Noise Control Engineering 2009, INTER-NOISE 2009
国/地域Canada
CityOttawa, ON
Period09/8/2309/8/26

ASJC Scopus subject areas

  • 音響学および超音波学

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