Mri scan - the noise?

Question

had a second MRI Scan this morning, and have been meaning to ask

what and why is causing all the noise!?

Answer 1

The MRI machine doesn't move at all.  MRI uses a magnetic field + RF waves. The noise you hear are the radio frequencies.

"Why is the MRI scanner so noisy?

Although there are no moving parts inside a MRI scanner, noise is generated when powerful Radio Frequency (RF) electrical pulses are turned on and strong electromagnetic fields are switched off and on rapidly."

http://www.lexingtondiagnostic.com/html/...

Answer 2

That noise is normal. It is the rotating mechanism of the scanner. Nothing to worry about. The MRI does cross section imaging of your body. Totally harmless, because it is magnetic reflective imaging.They would have given you headphones to listen to music.