TY - GEN
T1 - A study on the influence of 3-T MRI driving sound to assistant nurse
AU - Shimono, Yasuhiro
AU - Chikai, Masataka
AU - Muto, Kenji
AU - Yagi, Kazuo
AU - Arakawa, Yuki
PY - 2011/12/1
Y1 - 2011/12/1
N2 - Magnetic resonance imaging (MRI) equipment of high magnetic field generates loud sound of around 100 dB. Assistant nurse works in near field of the equipment for patient's help. It is necessary for the assistant nurses' hearing protection to analyze the driving sound. This paper shows the result of analysis of the driving sound in near field of a 3-T MRI equipment. The analyzed sounds were the driving sound of T2 weighted imaging (T2W) sequence and the driving sound of echo planar imaging (EPI) sequence. Each measuring points were the space where the assistant nurse works in the MRI examination room. Analyzing methods was 1/3 octave band analysis, as the methods to know the acoustical environment in the working space of the assistant nurse. Analyzing methods were equivalent continuous A-weighted sound pressure level (LAeq), spectrum analysis and 1/3 octave band analysis, as the methods to know the acoustical environment in the working space of the assistant nurse. As the result, maximum of LAeq of the driving sound of T2W was 86.0 dB; maximum value of peak frequency was 79.2 dB at center frequency 630 Hz of octave band. Maximum of LAeq of the driving sound as EPI was 98.1 dB; maximum value of peak frequency 1000 Hz of octave band.
AB - Magnetic resonance imaging (MRI) equipment of high magnetic field generates loud sound of around 100 dB. Assistant nurse works in near field of the equipment for patient's help. It is necessary for the assistant nurses' hearing protection to analyze the driving sound. This paper shows the result of analysis of the driving sound in near field of a 3-T MRI equipment. The analyzed sounds were the driving sound of T2 weighted imaging (T2W) sequence and the driving sound of echo planar imaging (EPI) sequence. Each measuring points were the space where the assistant nurse works in the MRI examination room. Analyzing methods was 1/3 octave band analysis, as the methods to know the acoustical environment in the working space of the assistant nurse. Analyzing methods were equivalent continuous A-weighted sound pressure level (LAeq), spectrum analysis and 1/3 octave band analysis, as the methods to know the acoustical environment in the working space of the assistant nurse. As the result, maximum of LAeq of the driving sound of T2W was 86.0 dB; maximum value of peak frequency was 79.2 dB at center frequency 630 Hz of octave band. Maximum of LAeq of the driving sound as EPI was 98.1 dB; maximum value of peak frequency 1000 Hz of octave band.
KW - Assistant nurse
KW - Driving sound
KW - Mri equipment
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M3 - Conference contribution
AN - SCOPUS:84867952412
SN - 9781618392800
T3 - 40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
SP - 1652
EP - 1657
BT - 40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
T2 - 40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
Y2 - 4 September 2011 through 7 September 2011
ER -