Mingfeng Li1, Brent Rudd1, Teik
C. Lim2, Jing-Huei Lee3,4
1Mechanical Engineering,
University of Cincinnati, Cincinnati, OH, United States; 2Mechanical
Engineering, University of Cincinnati, Cincinnati, United States; 3School
of Energy, Environment, Biological & Medical Engineering, University of
Cincinnati, Cincinnati, OH, United States; 4Center for Imaging
Reserch, University of Cincinnati, Cincinnati, OH, United States
Active noise control (ANC) for treating MRI noise effectively on a real life 4 T MRI scanner is presented in this study. Several MRI scanning sequences are used for demonstration. A dummy is equipped with an MRI compatible headset containing piezoceramic speakers with condenser microphones installed inside and outside the earpiece to measure the environmental sound in the immediate patient vicinity. During the in-situ test, the sound pressure level (SPL) was measured, both with and without the ANC. Results presented show the ANC system attained significant overall SPL reduction for all three scanning sequences tested.
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