Spectrum analysis of a 3-tesla MRI driving sound in space on the examination table

Masataka Chikai, Yasuhiro Shiumono, Kenji Muto, Kazuo Yagi, Yuki Arakawa

研究成果: Conference contribution

抜粋

MRI equipment has important role in medical diagnosis. In MRI examination, MRI equipment generated high level sound which the maximum sound pressure level was over 100dB on the examination table. The influence of the MRI for temporary potential hearing loss of the patient was researched [1]. However, there was is little analysis data of MRI driving sound. This paper shows the spectrum analysis of the driving sound in 3-tesla MRI equipment inside and outside the bore. The driving sounds were measured the driving sounds of Slice positioning (SP), Reference scan imaging (RS), T2 weighted imaging (T2W) and Echo planar imaging (EPI) that these were used in medical diagnosis. The maximum value of the center frequency of 1/6 octave analysis and the level of equivalent continuous A-weighted sound pressure level (L Aeq) of SP, RS, T2W and EPI were 115 dB at 1250 Hz, 101 dB at 1000 Hz, 106 dB at 630 Hz and 111 dB at 800 Hz respectively. Each maximum value was measured in the case of T2W and SP that the position was 40 cm and 50 cm, RS and EPI was 120 cm on the space of the examination table. It is shown that the patient who was examined the head or the knee heard the same level in case of same sequence. It is clear that inside and outside the bore, the patient hears peak frequency of the driving sound between 630 Hz and 1250Hz.

元の言語English
ホスト出版物のタイトル40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
ページ1736-1740
ページ数5
出版物ステータスPublished - 2011 12 1
イベント40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011 - Osaka, Japan
継続期間: 2011 9 42011 9 7

出版物シリーズ

名前40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
2

Conference

Conference40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
Japan
Osaka
期間11/9/411/9/7

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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  • これを引用

    Chikai, M., Shiumono, Y., Muto, K., Yagi, K., & Arakawa, Y. (2011). Spectrum analysis of a 3-tesla MRI driving sound in space on the examination table. : 40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011 (pp. 1736-1740). (40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011; 巻数 2).