Acoustic Noise
Fast gradient switching schemes result in acoustic noise during MR scans. Especially ultrafast sequences may result in significant acoustic noise levels and therefore represent a potential risk to the operator.

Fast gradient switching causes significant noise pressure levels.
- Do not stay within the magnet room during MR scans without hearing protection.
When in vivo animal experiments are performed, be aware of acoustic effects on the animal. Many animals are very sensitive to sound and have a different acoustic hearing spectrum than humans.
Be aware of the acoustic noise and potential hearing damage of the investigated animals while scanning.
- It is recommended to use hearing protection for animals while scanning.
Even when the instrument is in STANDBY or OFF, a periodic but permanent noise from the cold head and the transfer lines is present. In installations without separate Technical Room, permanent noise from the electronics cabinets is present while the instrument is ON.

Even when the instrument is in STANDBY or OFF, a periodic but permanent noise from the cold head and the transfer lines is present. In installations without separate Technical Room, permanent noise from the electronics cabinets is present while the instrument is ON.
- Limit attendance in the Magnet Room.
- Wear hearing protection when staying for a longer time in the Magnet Room.
- Do not establish a permanent work area in the Magnet or Technical Room.