Reducing acoustic noise in head-only scanners with padding on the RF coil
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
Authors
- G Shajan (ORCID: https://orcid.org/0000-0002-3146-6079)
- Alexander J. S. Beckett (ORCID: https://orcid.org/0000-0002-7123-9559)
- David A. Feinberg (ORCID: https://orcid.org/0009-0002-5016-9165)
- Nicolas Boulant (ORCID: https://orcid.org/0000-0003-2144-2484)
- Erica Walker (ORCID: https://orcid.org/0000-0001-5066-1403)
- An T. Vu (ORCID: https://orcid.org/0000-0003-2463-7789)
- J. Samantha (ORCID: https://orcid.org/0000-0003-3127-455X)
Publication Details
- Journal
- 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
- Published
- 2024-11-26
- DOI
- https://doi.org/10.58530/2024/3734
- Primary Topic
- Ultrasonics and Acoustic Wave Propagation
- Type
- article
- Field-Weighted Citation Impact
- 0.00