[Temporary threshold shift after nuclear magnetic resonance tomography].
The third-octave band levels of the noises produced in a MR-imager (1.0 Tesla Magneton, Siemens) were measured. Corresponding sounds presented through earphones have been used in simulation experiments to produce in normal-hearing listeners a temporary threshold shift lasting several minutes. These effects could be verified objectively using otoacoustic emissions. The consequences especially for patients with already impaired hearing are discussed: ear protection is strongly recommended.
Zwicker
E
E
Institut für Elektroakustik der Technischen Universität München.
Schorn
K
K
Vogl
T
T
D001305:Auditory Fatigue / Q000502:physiology*; D003055:Cochlear Microphonic Potentials / Q000502:physiology; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D009622:Noise / Q000009:adverse effects; D012307:Risk Factors; D013018:Sound Spectrography
Zeitlich begrenzte Schwellenverschiebung nach Kernspin-Tomographie.