Work

Reducing acoustic noise in head-only scanners with padding on the RF coil

Year: 2024

Type: conference-paper

Abstract: Motivation: Acoustic noise can be a severe physiological barrier for acquisitions at high field. Goal(s): To isolate the main source of acoustic noise in the NexGen 7T scanner and investigate ways to reduce it. Approach: Vibration and acoustic noise measurements were performed. Sponge window seal materials were stuck on the RF coil to attempt altering its vibrations and decrease acoustic noise. Results: The experimental data is consistent with noise induced by eddy-currents on the RF shield. Altering its vibrations allowed decreasing sound level by up to 10 dB at some EPI echo-spacings. Impact: Identifying the main source of acoustic noise shall open new research avenues to mitigate acoustic noise

Source: Proceedings on CD-ROM - International Society for Magnetic Resonance in Medicine. Scientific Meeting and Exhibition/Proceedings of the International Society for Magnetic Resonance in Medicine, Scientific Meeting and Exhibition

DOI: 10.58530/2024/3734