The Slimline Noise Guard Headset provides 12db of noise attenuation, protecting the patient from the loud sound of the gradient amplifiers, and is compatible with most other manufacturers sound systems. The slim profile of this head set fits into most head coils. For the tightest of head coil situations, Newmatic Sound Systems also manufacturers the Non Headset, fitting even the most extreme situations.
ANSI specification S3.19-1974 requires patients undergoing MRI to be provided with noise reduction devices offering a minimum of 29db Noise Reduction Rating (NRR). The SNGHS is not rated sufficiently to reduce noise, and therefore must be used in conjunction with earplugs with a minimum NRR rating of 29 in order to be ANSI compliant.