P Radomskij | PubMed Health

PubMed2002

Effect of MRI noise on cochlear function.

A disadvantage of magnetic resonance imaging (MRI) is the high level of noise produced (peaking between 122 dB and 131 dB). We used otoacoustic emissions (OAEs) as a method to quantify the effect of MRI-generated noise on the cochlea. OAEs were measured in 16 patients before and after MRI and in 16 controls. OAEs decreased in patients after MRI, but the controls, who were not exposed to MRI noise, showed no decrease over the same period. The change in OAEs shows a clear effect of MRI noise on cochlear function, despite use of earplugs. The importance of correctly fitted earplugs cannot be underestimated.

Cochlea↗

PubMed1990

Imbalance and chronic secretory otitis media in children: effect of myringotomy and insertion of ventilation tubes on body sway.

We studied balance in 34 children with chronic secretory otitis media and compared them with 34 age- and sex-matched control children between the ages of 3 and 5 years. In addition to history and examination, objective measurements were obtained by use of a fixed force plate body sway platform in both the control group and the group with chronic secretory otitis media. We took measurements in both groups at an interval of 4 months to ensure that any improvement in body sway could not be attributed to normal maturation. Eight parameters of body sway were compared, including three new parameters not described elsewhere (mean squared velocity, the number of intersections, and velocity moment). Our study showed that balance is significantly worse in children with chronic secretory otitis media compared to a control group. Furthermore, the increased body sway of children with chronic secretory otitis media was returned to the normal range by myringotomy and insertion of ventilation tubes.

Child, Preschool↗